Homework Help: Science: Earth

Recent Homework Questions About Earth

SCIENCE
The earth revolves around the sun, and the moon revolves around the earth. The moon is held in orbit by the earth's_________. a) regression b) revolution c) gravity d) resolution Just need to know if my answer or right or wrong. Thanks! :) C
Thursday, August 19, 2010 at 3:22pm

SCIENCE
The earth is a______.It has four different layers, some thicker than others.? a) spiral b) rotunda c) sphere d) globule Just need to know if my answer or right or wrong. Thanks! :) C
Thursday, August 19, 2010 at 3:21pm

Algebra
An object weighs 10 lbs and is 200 miles from the center of the earth. Solve for the constant
Thursday, August 19, 2010 at 2:53pm

science
A falling star is really a ______burning up in the atmosphere of the earth. Just need to know if my answer or right or wrong. Thanks! :) meteor
Thursday, August 19, 2010 at 7:24am

science
The moon revolves around the____. Just need to know if my answer or right or wrong. Thanks! :) Earth
Thursday, August 19, 2010 at 7:23am

science
The deepest layers of the earth is called the inner______. Just need to know if my answer or right or wrong. Thanks! :) Inner core.
Thursday, August 19, 2010 at 7:21am

science
A total solar eclipse means that no sunlight reaches a certain area on earth. true false Just need to know if my answer or right or wrong. Thanks! :) false
Thursday, August 19, 2010 at 7:20am

science
Very hot, liquid iron and sulfur are found 1,800 miles deep in the earth in the _____.? a) inner core b) mantle c) outer core d) crust Just need to know if my answer or right or wrong. Thanks! :) c
Thursday, August 19, 2010 at 7:19am

grammar
im confused if "earth" should be spelled with an uppercase. i would think so but just wanna make sure Hawaii has some of the most beautiful beaches on the earth. thanks :)
Wednesday, August 18, 2010 at 8:55pm

science
The moon revolves around the____. Just need to know if my answer or right or wrong. Thanks! :) earth
Wednesday, August 18, 2010 at 6:59pm

science
A total solar eclipse means that no sunlight reaches a certain area on earth. true false Just need to know if my answer or right or wrong. Thanks! :) true
Wednesday, August 18, 2010 at 6:58pm

science
A falling star is really a ______burning up in the atmosphere of the earth. Just need to know if my answer or right or wrong. Thanks! :) meteor
Wednesday, August 18, 2010 at 6:51pm

science
The deepest layers of the earth is called the inner Just need to know if my answer or right or wrong. Thanks! :) inner core
Wednesday, August 18, 2010 at 6:50pm

science
Which of the statements below are true? a) The surface of the sun is over 10,000 degrees F B) The sun is hot enough to heat the earth and give light to the planets c) The sun will continue to burn for at least another 5 billion years d) all of the above Just need to know if my...
Wednesday, August 18, 2010 at 5:31pm

Science
The lines of magnetic force generated by the fluid motions of the earth's core result in the formation of the_____. a) North Pole b) north magnetic pole c) magnetic north and south pole d) North and South Poles Just need to know if my answer or right or wrong. Thanks! :) d
Wednesday, August 18, 2010 at 4:51pm

science
The movement of the earth around the sun____. a) is one of the reasons for seasons b) results in the formation of day and night c) makes the sun rise in the east d) causes earthquakes e) cause the ice ages to reoccur Just need to know if my answer or right or wrong. Thanks...
Wednesday, August 18, 2010 at 12:29pm

science
An earth satellite in an elliptial orbit moves with a) slower speed as it ages b) none of the above c) constant speed d) faster speed as it ages Just need to know if my answer or right or wrong. Thanks! :) b or d but im strongly going for D but i could be wrong
Wednesday, August 18, 2010 at 7:15am

Science
For any mass m located anywhere in the universe, F=mg is the formula that tells the gravitational attraction between m and the earth, true false Just need to know if my answer or right or wrong. Thanks! :) False
Wednesday, August 18, 2010 at 7:11am

science
The earth's magnetic shield has? a) appeared only recently b)disappeared for short periods of time c)caused the earth's land masses to drift apart d)little effect on life this planet e)existed since the planet cooled Just need to know if my answer or right or wrong. ...
Wednesday, August 18, 2010 at 7:09am

Physics
the work done by the earth in moving round the sun is..................
Wednesday, August 18, 2010 at 5:35am

Earth Sciencs
What are the different types of seafloor sediments and what are the factors that control the distribution of each major sediment type? Where does each major seafloor sediment type tend to accumulate in greatest quantity?
Tuesday, August 17, 2010 at 9:49pm

physics
It is falling. It has to fall, that is the law of gravity. Otherwise, it would leave Earth in a straight line. But if it falls at exactly the rate it needs to fall to travel in an orbit, we call that "orbiting". If if falls faster than that, it crashes into Earth. If...
Tuesday, August 17, 2010 at 7:52pm

science
The earth and all the planets______(or travel around) the sun. Just need to know if my answer or right or wrong. Thanks! :) orbit
Tuesday, August 17, 2010 at 4:15pm

scicnec
An earth satellite in an elliptial orbit moves with a) slower speed as it ages b) none of the above c) constant speed d) faster speed as it ages Just need to know if my answer or right or wrong. Thanks! :) d
Tuesday, August 17, 2010 at 4:12pm

science
For any mass m located anywhere in the universe, F=mg is the formula that tells the gravitational attraction between m and the earth, true false Just need to know if my answer or right or wrong. Thanks! :) False
Tuesday, August 17, 2010 at 4:09pm

science
The earth's magnetic shield has a) appeared only recently b)disappeared for short periods of time c)caused the earth's land masses to drift apart d)little effect on life this planet e)existed since the planet cooled e
Tuesday, August 17, 2010 at 3:12pm

physics
Suppose that three astronauts outside a spaceship decide to play catch. All the astronauts weigh the same on Earth and are equally strong. The first astronaut throws the second astronaut toward the third one and the game begins. Describe the motion of the astronauts as the ...
Tuesday, August 17, 2010 at 12:23pm

science
the amount of solar energy that is intercepted by the earth is___by the __ of __. a) determind, lenght , daylight b) affected, presence, clouds in the sky c) influenced, phenomena, day and night d) influenced, phenomena, parallelism of axis e) all of the above
Monday, August 16, 2010 at 4:26pm

science
Oblique rays are different from vertical rays because they a) contain more solar energy b) strike the earth at an angle greater than 90 degrees c)spread their energy over a larger surface area d) a and b e) b and c i think between d and e
Monday, August 16, 2010 at 3:42pm

physics
The only force acting on a satellite in its orbit around Earth is the force of gravity from Earth. Why does a satellite not fall down?
Monday, August 16, 2010 at 2:58pm

science
the amount of solar energy trhat is intercepted by the earth is___by the __ of __. a) determind, lenght , daylight b) affected, presence, clouds in the sky c) influenced, phenomena, day and night d) influenced, phenomena, parallelism of axis e) all of the above
Monday, August 16, 2010 at 1:51pm

scinece
an earth satellite in an elliptical orbit moves with a) faster speed as it age b) none of the above c) constant speed d) slower speed as it age
Monday, August 16, 2010 at 1:45pm

science
Geocentric" means that the earth is the center of the unvierse, including the sun, the moon, the planets, and all the stars. Is the universe geocentric? yes no yes
Monday, August 16, 2010 at 1:05pm

Science
The largest planets in the solar system are a) located between Earth and Jupiter b)found between Mars and Pluto c) located between the sun and the earth d) scattered througthout the solar system e) none of these e
Monday, August 16, 2010 at 12:49pm

science
The primary source of energy in our solar sysem is from? a) fusion reaction on the sun b) fission reaction on the sun c) fission reaction on the earth d) fission and fusion in the galaxy e) fusion reactions in comets the answer i picked was a
Monday, August 16, 2010 at 12:10pm

Algebra
Available evidence suggests that about 20 percent of the asteroid’s mass turned to dust and spread uniformly over Earth after eventually settling out of the upper atmosphere. This dust amounted to about 0.02 g/cm^2 of Earth’s surface. The asteroid very likely had a ...
Monday, August 16, 2010 at 11:29am

Earth
So how long will global warming last for in the future? Remember the movie, "The Day After Tomorrow"? The whole world might experience all those disasters depicted in the movie.
Sunday, August 15, 2010 at 7:38pm

Earth
Has the issue of global warming been solved already? I mean, the Kyoto accord will expire in 2012. And are the glaciers of the North & South Pole melting even more?
Sunday, August 15, 2010 at 5:19pm

science
Let's say Glenn's trip around the earth took about 5 hours. that is how many times as long as Shepard's flight?
Friday, August 13, 2010 at 6:54pm

science
The Big Bang Hypothesis suggests that 20 billion years ago a) life first formed on the planet earth b) all matter collapsed into a single ball c) our sun was born d) space was much the same as it is today e) matter did not exist a
Friday, August 13, 2010 at 5:03pm

physics
Jessica's weight is 540 Newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 Newtons that acts in the opposite direction. However, if Jessica stumbles while rollerblading, she will ...
Thursday, August 12, 2010 at 2:23pm

Physics
Please help me solve this! The spectrum of the sodium atom is detected in the light from a distant galaxy. If the 590.0 nm line is redshifted to 658.5 nm, at what speed is the galaxy receding from the Earth?
Wednesday, August 11, 2010 at 12:04pm

Algebra
The ratio of the weight of an object on Mars to the weight of an object on Earth is 0.4 to 1. How much would a 120-lb astronaut weigh on Mars?
Monday, August 9, 2010 at 11:24pm

Physics
what is the gravitational potential energy at the centre of the earth??? If infinity is taken as the reference (i.e zero energy level)
Monday, August 9, 2010 at 2:00am

Chemistry
Gas particles are not found in which layer of Earth's atmosphere? A. exosphere B. mesosphere C. thermosphere D. magnetosphere I know it's not A.
Sunday, August 8, 2010 at 6:00pm

biology
What is the source of energy driving the hydrolic cycle? a. evaporation of the ocean water b. heat conducted from the earth's core to the surface c. radiant heat from the sun d. air currents returning to the earth's surface I chose a) evaporation of the ocean water. ...
Saturday, August 7, 2010 at 8:22pm

trigo
An observer at A looks due north and sees a meteor with an angle of elevation of 70deg. At the same instant, another observer 30 miles east of A, sees the same meteor and approximates its position as N 50deg W but fails to note its angle of elevation. Find the height of the ...
Tuesday, August 3, 2010 at 6:54am

math
Calculate the speed of an artificial earth satellite, assuming that it is travelling at an altitude h of 140 Km above the surface of the earth where g=9.8m/s2. The radius of earth R is 6373Km.
Monday, August 2, 2010 at 11:57pm

math 117 appendix d
Appendix D The Environment Environmental and wildlife preservation ensures future generations will have available resources and can enjoy the beauty of Earth. On the other hand, some of the damage humans have already done to the environment is expensive and time consuming to ...
Sunday, August 1, 2010 at 10:57am

EARTH SCIENCE
Which one of the objects listed below has the largest size. a-globular clusters b-galaxies c-stars nebula I think is B please help
Saturday, July 31, 2010 at 10:35am

EARTH SCIENCE
Which of the following is NOT considered a form of electromagnectic radiaction? a-radio waves b-gravity c gamma rayas d visible light e- x-rays I think is B
Friday, July 30, 2010 at 10:01pm

EARTH SCIENCE
A dark gray cloud that blankets the sky and often generates precipitacion is called
Friday, July 30, 2010 at 6:26pm

EARTH SCIENCE
Identify key characteristics of our star,the Sun.
Friday, July 30, 2010 at 5:19pm

Astronomy
I have another question. What would an observer on the Moon looking at the Earth see? a) always see a fully-illuminated Earth b) always see a half-illuminated Earth c0 see phases of Earth d) see continuous darkness These are the four answers, but I would think it would depend ...
Friday, July 30, 2010 at 3:37pm

Physics
(a)Assuming that only gravity is acting on it, how far does an electron have to be from a proton so that its acceleration is the same as that of a freely falling object at the Earth’s surface? (b)Suppose the Earth were made up only of protons but had the same size and ...
Thursday, July 29, 2010 at 10:56am

science
Water that's on the side of the earth facing the moon will (a) retreat (b) rise (c) stay at the same level (d) fall
Tuesday, July 27, 2010 at 6:37pm

EARTH SCIENCE
Briefly discuss stellar evolution. What forces are opposing one another throughout the life of a star? How do these forces influence the various stages of a star's life cycle
Monday, July 26, 2010 at 6:27pm

Trig
Even if you have no idea what on earth any of this stuff is but have a vast knowledge in complex number system you might be able to help me as this is what I believe is preventing me from making sense of this stuff... Ok I'm trying to understand how you would know that sin...
Thursday, July 22, 2010 at 3:15pm

Physic
Geophysicist have estimated that the temperature at the center of the earth’s core is 5000⁰C (or more), while the temperature of the sun’s core is about 15 million K. Express both of these temperature in Fahrenheit degrees.
Thursday, July 22, 2010 at 11:26am

math/everything
do you know any website that can help me with all this 1.Language Arts, Writing, in two parts. •Part 1: Organization, Sentence Structure, Usage, and Mechanics •Part 2: Essay 2.Language Arts, Reading •Poetry •Drama and •Fiction •Non-fiction •...
Thursday, July 22, 2010 at 8:48am

EARTH SCIENCE
If the ages of Earth and the Moon are nearly identical, as believed, why are most of the rocks found on the Moon so much older than most of the rocks found on Earth?
Wednesday, July 21, 2010 at 7:02pm

PHYSICS
How long would a meteor, with a velocity of 45 km/s, take to travel 120 km through Earth's atmosphere to Earth's surface? Assume no atmospheric friction. A. 0.375 s B. 2.66 s C. 45 s D. 5400 s I say B.
Wednesday, July 21, 2010 at 6:30pm

physic
mars once may have had an ocean 0.50 km deep. the acceleration due to gravity on mars is 0.379g, and we shall assume (unrealistically) the consisted of fresh water. a)what would be the guage pressure(in Pa)at the bottem of this martian ocean? b)what is the guage pressure (in ...
Tuesday, July 20, 2010 at 7:32pm

Kate
ok I was doing this problem cos^-1 (0) and was like oh that would be pi/2 but then I thought about it some and decided that even though it's right it can't possibly be... if tan(pi/2) = the first derrivative of a vertical line = undefined well not really there's a ...
Tuesday, July 20, 2010 at 5:39pm

Advanced Functions - Grade 12
Radiation from the sun keeps us alive, but with the thinning of the ozone layer, it is important to limit exposure. Most of us know that the sun is far more intense at the equator than at the poles. The relationship between the intensity of radiation with respect to the ...
Tuesday, July 20, 2010 at 12:22am

EARTH SCIENCE
What would a calendar be like on Venus (for a hypothetical Venusian resident)?
Monday, July 19, 2010 at 6:02pm

geography
How are natural resources distributed throughout the world? (a) Most natural resources are found in developed nations. (b) Most natural resources lie beneath the ocean floor. (c) Natural resources are distributed evenly among all nations. (d) Natural resources are spread out ...
Monday, July 19, 2010 at 4:37pm

EARTH SCIENCE
Some factors that might influence solar radiation on the Martian surface
Sunday, July 18, 2010 at 7:27pm

EARTH SCIENCE
How are carbon dioxide and other trace gases thought to be potentially related to global warming? Are the levels of these gases in our atmosphere increasing or decreasing? Why? Finally, what are some of the observed climatic trends and possible consequences associated with ...
Sunday, July 18, 2010 at 2:37pm

Physics
Three masses, m1 (a mouse), m2 (a bear) and m3 (an elephant), are in circular orbits of radii r1, r2 and r3 around the sun. The masses obey the relation, m1 < m2 < m3. While r1 and r2 are equal to Earth's orbital radius, r3 is equal to Jupiter's orbital radius. 1...
Sunday, July 18, 2010 at 3:36am

physics
In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you weigh 580 N, to ...
Friday, July 16, 2010 at 7:42pm

physics
(a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 153 km? m/s (b) What is the period of revolution? min Read the eBook
Friday, July 16, 2010 at 7:25pm

math 117
Can some help me with this appendix please. Thank you Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object ...
Friday, July 16, 2010 at 2:07pm

math 117
I am having an issue solving this appendix.... Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to ...
Thursday, July 15, 2010 at 5:56pm

college
Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
Thursday, July 15, 2010 at 5:25pm

Physics
"If a small planet were located 8 times as far as the Earth's distance from the Sun, what would be its period in Earth years?" (22.5 earth years) As a note, we are given a table with all of the planets' masses and radii.
Thursday, July 15, 2010 at 4:32pm

physics
1. Measurements show that there is an electric field surrounding the Earth. Its magnitude is about 100 N/C at the Earth's surface and points inward toward the Earth's center. From this information, can you state whether the Earth is negative or positive? (Planet Earth ...
Thursday, July 15, 2010 at 4:29pm

geometry
what is the volume of earth if the diameter of earth is 7920 miles.
Wednesday, July 14, 2010 at 8:07pm

EARTH SCIENCE
You are given a 6-month assignment by your employer to work at a remote location in Australia. In order to pack as lightly as possible, you try to research the climate of a small town in Australia. There is little data since no major cities are located within 300 miles of the ...
Tuesday, July 13, 2010 at 1:13pm

physics
1. (a) How far below an initial straight-line path will a projectile fall in eight seconds? (b) Does your answer depend on the angle of launch or on the initial speed of the projectile? the answer is no. but defend it. 2. Why is it important that a satellite be above Earth'...
Tuesday, July 13, 2010 at 11:54am

physics
1. What did Newton conclude about the force that pulls apples to the ground and the force that holds the moon in orbit? 2. What does the very small value of the gravitational constant G (in standard units) tell us about the strength of gravitational forces? 3. We can think of ...
Tuesday, July 13, 2010 at 10:57am

physics
1. If our sun shrank in size to become a black hole, using the gravitational force equation, explain why the Earth's orbit would not be affected. 2. Strictly speaking, you weigh a tiny bit less when you are in the lobby of a massive skyscraper than you do at home. Why is ...
Tuesday, July 13, 2010 at 8:49am

science
based on how we are treating our earth today. what events have led to what humans want from a place in the movie called pandora. thinking of climate, carbondioxide and greenhouse gases.
Monday, July 12, 2010 at 5:23pm

physics
1. Calculate the speed in m/s at which the Earth revolves about the sun. You may assume the orbit is nearly circular. 2. A satellite is about 6.5 x 10^3 km from the (center of the) Earth. Find its average orbital speed about the Earth. 3a. A certain satellite has a kinetic ...
Monday, July 12, 2010 at 11:27am

Physics
1.Halley's comet moves about the sun in an elliptical orbit with its closest approach to the sun being 0.59 A.U. and its furthest distance being 35 A.U. [1 Astronomical Unit (A.U.) is the Earth-Sun distance.] If the comet's speed at closest approach is 54 km/s, what is...
Sunday, July 11, 2010 at 6:54pm

EARTH SCIENCE
Discuss the distribution of seafloor sediments in the ocean basins.What are the differents types of sediments? What are the factors that control their distribution(geologic setting climates, etc)?
Sunday, July 11, 2010 at 6:31pm

physics
The value of g at the Earth's surface is about 9.8 m/s2. What is the value of g at a distance from the Earth's center that is 9.5 times the Earth's radius?
Saturday, July 10, 2010 at 5:20pm

Physic
How many kilometers would you have to go above the surface of the earth for your weight to decrease to half of what it was at the surface?
Saturday, July 10, 2010 at 4:33pm

Physic
What is the period of revolution of a satellite with mass m that orbits the earth in a circular path of radius 7820 km (about 1450 km above the surface of the earth)?
Saturday, July 10, 2010 at 3:38pm

EARTH SCIENCE
Discuss the distribution of seafloor sediments in the ocean basins. What are the different types of sediments? What are the factors that control their distribution (geologic setting, climate, etc.)?
Saturday, July 10, 2010 at 2:55pm

EARTH SCIENCE
If the warm North Atlantic Drift were to cease, how might the climate of Western Europe change?Speculate about how such a climate could influence the biosphere? help me please.
Saturday, July 10, 2010 at 1:42pm

physics
A boulder weighs 800N at the surface of the earth. What would be its weight at a distance of three earth's radii from the center of the earth?
Thursday, July 8, 2010 at 2:00am

physics
A boulder weighs 800N at the surface of the earth. What would be its weight at a distance of three earth's radii from the center of the earth?
Wednesday, July 7, 2010 at 11:43pm

physics
what is the value of the acceleration due to gravity of the earth at an altitude twice the radius of the earth?
Wednesday, July 7, 2010 at 11:17pm

Mechanics
If an object weighs 39.2 N on Earth, what is its mass?
Tuesday, July 6, 2010 at 1:04am

earth and sun
express the distance of the earth from the sun using exponential notation
Thursday, July 1, 2010 at 7:30am

EARTH SCIENCE
Do you foresee humans colonizing the planets and moons of our solar system in the long term future of our species? What kind of terraforming would be necessary to make this possible?
Tuesday, June 29, 2010 at 6:00pm

earth science
If all matter is made up of the same atoms from the periodic table, is there a big difference between living organisms and non living objects? why or why not?
Tuesday, June 29, 2010 at 4:59pm

EARTH SCIENCE
What are some observations about our solar system that are explained by the nebular hypothesis? Are there any observations that are not easily explained by the nebular hypothesis?
Friday, June 25, 2010 at 9:19am

earth
Plate Tectonic Theory: What evidence that supports this theory?
Wednesday, June 23, 2010 at 8:40am

earth
Plate Tectonic Theory: What evidence that supports this theory?
Wednesday, June 23, 2010 at 8:34am

EARTH SCIENCE
What is the relationship of climate to weathering (both chemical and mechanical)? Are certain climates more susceptible to certain types of weathering? Why or why not?
Tuesday, June 22, 2010 at 6:47pm

math
I'm trying to help my child with this problem.. 1.A bird is flying around the world at a rate of 12.2ft/sec. How many days will it take to complete its journey? (circumference of earth=25,000 miles. 2. A deep space probe is traveling at a velocity of 56.2km/s. What is its ...
Monday, June 21, 2010 at 4:40pm

physics
Calculate the force of gravity on a 1-kg mass at Earth's surface. Mass of Earth is 6.0 x 10^24th powerkg and Radius is 6.4 x 10^6th power m
Sunday, June 20, 2010 at 2:12am

college
12.2 ft/sec how many days will it take to complete its journey with the circumference of the earth is 25000 miles. How do i work this problem out dont want the answer just want to know how to solve it!
Friday, June 18, 2010 at 9:27pm

physics
It has been suggested that rotating cylinders about 9 mi long and 6.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?
Friday, June 18, 2010 at 2:09pm

physics
The question has three parts, it looks like a lot but it is just description, trying to understand relationships. 1. You toss a coin straight up into the air. Sketch on the axes below the velocity-time acceleration-time graphs of the coin from the instant it leaves your hand ...
Thursday, June 17, 2010 at 10:34pm

Mechanics
If an object weighs 39.2 N on earth what is its mass
Tuesday, June 15, 2010 at 8:02pm

science
The______ is the center of the moon's shadow where the sun's light is completely blocked from view on earth.
Tuesday, June 15, 2010 at 5:20pm

Mechanics
If an object weighs 39.2 N on earth, what is its mass?
Monday, June 14, 2010 at 4:09pm

phyics/moon
The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What net force would be required to accelerate a 20-kg object at 6.5 m/s2 horizontally on the moon? A) 1.3 N B) 20 N C) 33 N D) 120 N E) 130 N
Monday, June 14, 2010 at 2:08pm

Physical Science
The acceleration due to gravity is about 10 m/s2 at the Earth's surface. What is the acceleration due to gravity for a person on the space station orbiting 200 miles above the Earth's surface?
Friday, June 11, 2010 at 6:02pm

english
I need help. I need to revise any run-on sentences. The first one is this. Not sure if these are correct. Death Valley National Monument located in Southern California and Nevada, is one of the hottest place on earth. Temperatures there have soared as high as 134 degrees ...
Thursday, June 10, 2010 at 5:09pm

Reading (literally)
TO BUILD A FIRE Jack London Day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main Yukon trail and climbed the high earthbank, where a dim and little-traveled trail led eastward through the fat spruce timberland. It was a steep bank, ...
Monday, June 7, 2010 at 10:54pm

Reading
TO BUILD A FIRE Jack London Day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main Yukon trail and climbed the high earthbank, where a dim and little-traveled trail led eastward through the fat spruce timberland. It was a steep bank, ...
Monday, June 7, 2010 at 8:26pm

earth science
surface ocean currents located at 40 degrees south latitude 90 degrees west longitude generally flow toward the northeast?
Monday, June 7, 2010 at 12:26pm

science
The earth's differentiation and size were significant factors for life on Earth because Earth's composition and gravitational attraction _____. A-keep the moon and sun in orbit B-keep people grounded C-helped to create and retain Earth's atmosphere D-create and ...
Sunday, June 6, 2010 at 4:33pm

Physics
A hunter aims directly at a target (on the same level) 125m away. If the bullet leaves the gun at a speed of 227 m/s, by how much will it miss the target? I'm not sure how to approach this problem. I know I need to find the horizontal distance traveled, probably by finding...
Thursday, June 3, 2010 at 6:42pm

English
Can you please check if the following sentences are correct? Thank you very much in advance. 1)The first four sections correspond to the Greek classical elements of earth, air, fire and water. 2) The final fifth section is usually interpreted as referring to ether, the fifth ...
Thursday, June 3, 2010 at 5:52pm

Geometry
A globe sits on a geography teacher's desk. The diameter of the globe is 0.001 km. The earth has a diameter of 12, 713.54 km. Find the ratio of the volume of the globe to the volume of the earth.
Thursday, June 3, 2010 at 12:49pm

geography
what is the theory that helps explain how the earth's topography is formed and how it changes?
Wednesday, June 2, 2010 at 5:53pm

physical science,
the planet jupiter is more than 300 times more massive than earth. However,an object scarcley weighs 3 times as much on the surface of jupiter as it does on the surface of the earth. how can that be? Determine the radius of jupiter in terms of earth radii
Tuesday, June 1, 2010 at 8:54am

Physics for Life science
The planet Jupiter is more than 300 times more massive than Earth. However, an object scarcely weighs 3 times as much on the surface of Jupiter as it does on the surface of the Earth. How can that be? determine the radius of Jupiter in terms of Earth radii.
Tuesday, June 1, 2010 at 6:27am

physics
In the early morning hours of June 14, 2002, the Earth had a remarkably close encounter with an asteroid the size of a small city. The previously unknown asteroid, now designated 2002 MN, remained undetected until three days after it had passed the Earth. Suppose that at its ...
Monday, May 31, 2010 at 1:06pm

physics help pleaseee
In the early morning hours of June 14, 2002, the Earth had a remarkably close encounter with an asteroid the size of a small city. The previously unknown asteroid, now designated 2002 MN, remained undetected until three days after it had passed the Earth. Suppose that at its ...
Monday, May 31, 2010 at 11:23am

life science
What is the highest point on earth, which is topped by Ordovician marine limestone
Monday, May 31, 2010 at 10:47am

jupiter and earth
The planet of Jupiter is more than 300 times more massive than earth.however,an object scarcely weighs 3 times as much on the surface of Jupiter as it does on the surface of the earth. How can that be? Determine the radius of Jupiter in terms of earth radii.
Sunday, May 30, 2010 at 10:47am

PHYSICS
A long, straight wire lies on a horizontal table and carries a current of 1.45 µA. In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 3.00 104 m/s at a distance d above the wire. Determine the value of d. Ignore the magnetic ...
Wednesday, May 26, 2010 at 5:24pm

physics
for both of these object system1: earth and ball if a ball is falling down, is the work done on it positive since force and displacement are in the same direction. system 2: earth and basket a basket is tied to a rope and is dropped then come to a full stop, then is the work ...
Tuesday, May 25, 2010 at 6:30pm

astronomy
the diameter of earth is 7928 miles. what is the diameter in inches? in yards? If the diameter of earth is expressed in 12,756km what is the diameter in meters? in centimeter? give yoiur answers in scientific notation
Saturday, May 22, 2010 at 9:43pm

Algebra
Using the formula: w=Cr^-2 where C is a constant, and r is the distance that the object is from the center of Earth. W is the weight. 1- Suppose an object is 100lbs when it is at sea level. Find the Value of C that makes the equation true. Sea level is 3,963 miles from the ...
Friday, May 21, 2010 at 4:23pm

Chemistry
A weather balloon at Earth's surface has a volume of 4.00 L at 304 K and 755 mm Hg.? If the balloon is released and the volume reaches 4.08 L at 728 mm Hg, what is the temperature? What gas law do you use?
Friday, May 21, 2010 at 8:09am

Right Hand Rule
Consider an electron near the Earth's equator. In which direction does it tend to deflect if its velocity is directed in each of the following directions? (a) downward: WEST (b) northward . (c) westward d) southeastward I go the first one right using the right hand rule ...
Friday, May 21, 2010 at 12:28am

literary
1. Hopkins’s use of “seared,” “bleared,” and “smeared” is an example of A. metaphor. C. simile. B. assonance. D. alliteration. 2. A villanelle is A. a narrative poem written in blank verse. B. a formal poem using extensive repetition. C. a ...
Wednesday, May 19, 2010 at 12:02pm

physics
In 2003, New Zealand households consumed a total of 153.6E+15 J of energy (the largest amount of any sector in the New Zealand economy). How many days would it take for the sun to put that amount of energy onto a region 20.0 km by 20.0 km (0.15 percent of New Zealand's ...
Monday, May 17, 2010 at 10:57pm

physics
consider an electron near the equator. in which direction does it tend to deflect by the magnetic field of the earth if its velocity is directed a.northward
Monday, May 17, 2010 at 10:01pm

Physics
A satellite orbits the earth at a distance of 10,000 miles from the earth's center. At this distance the force of gravity on the satellite is 90lbs. What would the force on the satellite be if the distance were 5000 miles instead? At what distance from the earth's ...
Monday, May 17, 2010 at 8:14pm

Physics
Suppose that a steel hoop could be constructed to fit just around the earth's equator at a temperature of 20.0 Celsius. What would be the thickness of space between the hoop and the earth if the temperature of the hoop were increased by 0.200 C? Use 6.38×106m for the...
Monday, May 17, 2010 at 1:18am

college physics
Estimate the rotational kinetic energy of Earth, assuming it to be a solid sphere of uniform density.
Friday, May 14, 2010 at 2:58pm

college physics
A space shuttle is in a circular orbit at a height of 250km, where the acceleration of Earth’s gravity is 93% of its surface value. What is the period of its orbit?
Friday, May 14, 2010 at 2:58pm

Nouns
Hawaii is one of the most beautiful places on earth. Would "places" be considered a noun??
Thursday, May 13, 2010 at 4:21pm

spanish
does anyone know the story called " What ought a man to do on earth" It is from penn foster. Can I find it on the Internet if so where
Wednesday, May 12, 2010 at 8:54pm

SCIENCE
The tracks of the astronauts who landed on the moon are still there in the dust and show no signs of being worn away. This is attributed to the lack of atmosphere on the moon. Which of the following best accounts for the lack of atmosphere? 1)the moon's weak gravity 2)the ...
Wednesday, May 12, 2010 at 6:47pm

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