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June 27, 2016

Homework Help: Science: Earth

Recent Homework Questions About Earth

earth science
soil maps are used to do what
Tuesday, September 29, 2009 by joshua

earth science
1) What has happened to the ice in Greenland? What does Gore say will likely happen? 2) How high does Gore say sea level will rise if nothing is done? In how many years?
Monday, September 28, 2009 by Sarah

CHEMiSTRY PLEASE HELP
What is the mass of 4.2 kg of gold when it is transferred to a planet having twice the gravity of earth?
Sunday, September 27, 2009 by Jess

chemistry
51. What is the mass of 4.2 kg of gold when it is transferred to a planet having twice the gravity of earth? 71. You have a mixture of salt and sand that must be separated by using physical changes only. Describe what you would do to prepare dry samples of the two constituents...
Sunday, September 27, 2009 by Jess

Sci.
51. What is the mass of 4.2 kg of gold when it is transferred to a planet having twice the gravity of earth? 71. You have a mixture of salt and sand that must be separated by using physical changes only. Describe what you would do to prepare dry samples of the two constituents...
Sunday, September 27, 2009 by Jess

College Physics
A spy satellite is in circular orbit around Earth. It makes one revolution in 5.99 hours. (a) How high above Earth's surface is the satellite? (b) What is the satellite's acceleration?
Friday, September 25, 2009 by Megan

earth science
decribe the composition and nechanisms of the earth crust
Thursday, September 24, 2009 by tunday

science
an earhquake would be on earth as ______ would be on venus?
Thursday, September 24, 2009 by salman

Physical Science
If the southern hemisphere contains 10 percentland and the northern hemisphere contains 40 percent land, what percentof Earth is land?
Thursday, September 24, 2009 by Nathan

AP Physics (circular motion)
The moon revolves about the Earth in a trajectory that is very nearly a circle of radius r = 384,401 km, and requires 27.3 days (23.4 x 10^5 seconds) to make a complete revolution. What is the acceleration of the moon toward the Earth?
Thursday, September 24, 2009 by perry

social studies
what is one of the earth's seven large bodies of land is called what?
Wednesday, September 23, 2009 by shaina

science
erthquake would be on earth as _______ would be on venus?
Wednesday, September 23, 2009 by salman

Chemistry
Can someone please help me determine if these questions are correct. If there not can you point me in the rightdirection...please...please...and thank you! 1. Compared to the particles of a gas, the particles of a liquid a. Are not in constant motion b. Collide with the sides ...
Wednesday, September 23, 2009 by Jessie

physics
If a mole of atoms were spread uniformly over the surface of the Earth, how many atoms would there be per square meter?
Wednesday, September 23, 2009 by wong

Physics
The moon Europa, of the planet Jupiter, has an orbital period of 3.55 days and an average distance from the center of the planet equal to 671,000 km. If the magnitude of the gravitational acceleration at the surface of Jupiter is 2.36 times greater than that on the surface of ...
Tuesday, September 22, 2009 by Amzz

EARTH SCIENCE
I need four reasons the layers of the egg compare to the earth. so I have three 1. The shell compares to the crust 2. The white compares to the Mantle 3. The yolk is the core Then they also want : describe two other ways the egg compares to the earth. Can't think of any ...
Monday, September 21, 2009 by JJ

SCIENCE
A METHOD OF SENDING ENERGY WAVES FROM A SATELLITE TO AN AREA OF EARTH BEING OBSERVED IS?
Monday, September 21, 2009 by EIMEE

Science
Why is the angle of rays of sunlight so important in determining the amount of energy collected by the earth
Monday, September 21, 2009 by Skyler

Chemistry
Will someone please let me know if these answers are correct or not? If there not can you help me with them? Thanks so much in advance ;-) 1. In a tetrahedral molecule, how many unshared pairs of valence electrons does the central atom have? a. None b. One c. Two d. Three e. ...
Monday, September 21, 2009 by Taylor

geography
What is the Earth System that includes the Continental and Oceanic crust?
Monday, September 21, 2009 by Qwynne

Earth Science
Does feldspar has a higher value than iron-containing minerals and why. can someone answer the question? please help
Sunday, September 20, 2009 by Chris

Science
How would the solstices and equinoxes change if the earth's orbit were circular instead of elliptical? explain how a circular orbit would effect seasonal changes. can someone help? please
Sunday, September 20, 2009 by Ryan

Earth Science
can someone help me? you are given a sample of an unknown mineral. you determine that the mineral's streak is whte and its specific gravity is 2.8. is the mineral most likely to be a metallic mineral or a nonmetallic mineral? explain your answer. please help
Sunday, September 20, 2009 by NeedHelpPlz

Earth Science
I've been stuck on this question for half hour so please help me According to the principle of supply and demand, the price you pay for a product is determined both by its availability and by consumer demand for the product. on the basis of this principle, which minerals ...
Sunday, September 20, 2009 by NeedHelpPlz

Earth Science
a sample of magma flows very quickly. Would you expect it to contain high or low amounts of silica? Why? please help
Sunday, September 20, 2009 by NeedHelpPlz

science
Suppose the moon were closer to Earth. How would the force between Earth and the moon be different?
Sunday, September 20, 2009 by jasfjdkla

microeconomics
Earth Movers and Shakers operates 3 iron ore mines. This table shows their daily production rates given the number of miners at each mine. All of the miners work for the same wage. mine-----------tons---- # of miners mother lode------100-------25 scraping bottom---30-------10 ...
Friday, September 18, 2009 by haley

Language Arts (2nd Grade)
Question: Name 10 Community Things You Can Do To Help The Earth. I Cant Think of Any!! Help
Friday, September 18, 2009 by Ella

11th grade Biology
I have three questions that I can't find anywhere. 19) Organisms that are at the greatest risk when the dynamic equilibrium is upset would be the: A. Organisms at the top of the evolutionary tree B. Generalists C. Specialists D. Invertebrates E. All of the above 20) A ...
Friday, September 18, 2009 by Alicia

science
A helicopter is ascending vertically with a speed of 4.00 m/s. At a height of 185 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?
Friday, September 18, 2009 by john

Earth Science
i need help on a question "Describe how Earth would be different today if it contained no radio active material. What would the consequences be for the Earth's interior layers?" please help and thanky you
Thursday, September 17, 2009 by Need Help

science
what move tectonic plates around earth?and how does it move the plates?
Thursday, September 17, 2009 by yin

science
will earth get smaller in the future?if does why?
Thursday, September 17, 2009 by yin

physical science
Diamonds are made 1. at the surface of earth 2. magma moving at supersonic speeds deep inside the earth 3. in river beads 4. in limestone caverns
Thursday, September 17, 2009 by Clarissa

Science
I am doing my homework and I need to know "Why is the angle of rays of sunlight so important in determining the amount of energy collected by the earth?"
Thursday, September 17, 2009 by Sara Kate

chemistry help
ok so i need to find how many atoms make up the earth. the average atomic mass of the atoms is 14g/mol. avogadro's number gives the number of atoms in a mole. so what atom do i take?? carbon or something??
Thursday, September 17, 2009 by RAYMOND

Earth Science
i need help on a question "Describe how Earth would be different today if it contained no radio active material. What would the consequences be for the Earth's interior layers?" please help and thanky you
Wednesday, September 16, 2009 by Anomynous

earth science
metric unit for length
Wednesday, September 16, 2009 by Raykym

earth science
what instument is used to find mass
Wednesday, September 16, 2009 by Raykym

earth science
What may form when falling precipitation runs off the surface of the ground? Explain how the form of precipitation may affect runoff. I don't understand what they are asking. What do they mean by "What may form?" does it mean like a puddle? or mudslide? or ...
Wednesday, September 16, 2009 by Michelle

science
which main earth system is the water apart of
Wednesday, September 16, 2009 by day

chemistry
The total surface area of earth is about 1.97*10^8 square miles. the surface area of land on earth is about 5.73*10^7 square miles. find the ratio of the surface area of land to the entire planet.?
Monday, September 14, 2009 by ashley

TRIG
please help two questions h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 2 9 6 7 1 5 7 also A surveillance satellite circles Earht at a height of h miles above the surface. Suppose that d is the distance, in miles, on the sruface of Earth that ...
Monday, September 14, 2009 by TRIG

science
i need help on a question a method of sending energy waves from a satellite to an area of earth being observed is my choices are conic projection GPS radar navigation
Monday, September 14, 2009 by Amber

Repost- Biology
Will someone please help me out.. I have been posted these questions for 7 hours .. but no one has helped me out..please help me out..I got to figure it out within today..please.. 1. Which of the following is a biotic factor that might affect the life of a water-dwelling ...
Sunday, September 13, 2009 by Anonymous

physics
can you walk me through this problem At what distance from teh Earth will a spacecraft on the way to the Moon esperience zero net force due to these two bodies because the EArth and Mon pull with equal and opposite forces? mass of earth = m1 = 5.98 E 24 kg mass of moon = m2 = ...
Sunday, September 13, 2009 by Physics

Biology
1. Which of the following is a biotic factor that might affect the life of a water-dwelling organism? A. Temperature of the water B. Speed of water current C. Pollutions in water D. Bacterial population in water My guess: D? 2. Which of the following things does NOT allow ...
Sunday, September 13, 2009 by Anonymous

Physics
I have no idea how to do this problem At what distance from teh Earth will a spacecraft on the way to the Moon esperience zero net force due to these two bodies because the EArth and Mon pull with equal and opposite forces? there\'s no data in the question to use
Sunday, September 13, 2009 by Physics

Earth Science
an evidence is a material or data that can be measured and tested to verify their prediction so wat is the difference to a scientific inquiry plz help and thank you
Saturday, September 12, 2009 by 2to1tony

Earth Science
wat is the difference between a hypothesis and a question? plz help and thank you
Saturday, September 12, 2009 by 2to1tony

TO BOBPURSLEY
acceleartiononmoon= GMassmoon/radius^2 =G 7.35E22/(1.74E6)^2= G 2.43E10= = 6.67E-11*2.43E10= 1.62 m/s^2 or as a gravitational field constant= 1.62 N/kg I have no idea why you used the mass of Earth. were did you get a = r^-2 Gm from i thought that the equation was net force = ...
Saturday, September 12, 2009 by TO BOBPURSLEY

Earth Science
an evidence is a material or data that can be measured and tested to verify their prediction so wat is the difference between evidence and scientific inquiry\ plz help and thank you
Saturday, September 12, 2009 by 2to1tony

physics
Calculate the acceleration due to gravity on the moon. The moon\'s radius is about 1.74 E 6 m and its mass is 7.35 E 22 kg ok aparently there\'s an easier way to do this I applied Newtons second law in the radial direction net force radial = m (radial acceleration) = ...
Saturday, September 12, 2009 by physics

Earth Science
wat is the difference between cooperation and peer review? plz help and thank you
Saturday, September 12, 2009 by 2to1tony

Earth Science
WAT IS THE DIFFERENCE BETWEEN SCIENCE AND TECHNOLOGY? plz help and thank you
Saturday, September 12, 2009 by 2to1tony

Earth Science
can someone help me? wat is the difference between the scientific theory and the scientific law? plz and thank you
Saturday, September 12, 2009 by 2to1tony

algebra
how do you write and solve an equation to determine the radius of mars the radius of earth is 6378.1 km, which is 2981.1 km longer than the radius of mars
Saturday, September 12, 2009 by delisa

AP Physics B
Calculate the force of gravity on a spacecraft 12,800 km (2 earth radii) aboce the Earth\'s surface if its mass is 1400 kg. Ok for this question I first converted to meters for the radius then applied newtons law net force radial = m1 a radial = Fg = r^-2 G m1 m2 Fg = (1....
Friday, September 11, 2009 by AP Physics B

science
how does the atmosphere spread solar energy over the earth
Wednesday, September 9, 2009 by renay

Geography
How does earth's revolution around the sun relate to seasons?
Wednesday, September 9, 2009 by Kaylee

5th grade
correct noun form please. bob know that he had to have the (earth's/earths) smell on him before the (horses/horses') would accept him.
Wednesday, September 9, 2009 by cody

Physics
A helicopter is ascending vertically with a speed of 5.00 m/s. At a height of 120 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground? v_0 for the package equals the speed of the helicopter Help?
Tuesday, September 8, 2009 by Cara

physics
The diameter of the earth is about 7.6 x 10^3 miles. What is the linear velocity of a person, on the equator, in feet per second?
Monday, September 7, 2009 by Some kid

college/earth science
if unsaturated air at 23 degree celsius were to rise, what would its temperature be at 500 meters?
Saturday, September 5, 2009 by christina

Math
I need someone to check over this assignment that is for extra credit. I have include the problems as well as the answers . I thank you. Multiple Choice Questions (On Multiple Choice Questions, you do not need to show your work unless asked to.) 1. Write the word name for the ...
Saturday, September 5, 2009 by tamara jones

English
We're supposed to write a Reader's Response Journal on a passage from the book The Alchemist. I was wondering if mine sounded alright. Does it need any work? Is it sloppy or weak? ANY tips appreciated. :) ~~~ The King of Salem explained that a person’s Personal ...
Friday, September 4, 2009 by Danna

Earth Science
How many liters in 1000cm squared...I just don't get it?
Thursday, September 3, 2009 by kim

math
1. Number Sense: write three numbers that are greater than 1,543,000 and less than 1,544,000 2. Put the planets in order from the one closest to the sun to the one farthest from the sun. Earth 93,000,000 Jupiter 483,000,000 Mars 142,000,000 Mercury 36,000,000 Venus 67,000,000
Wednesday, September 2, 2009 by Bianca

american literature
When Jim arrives in Nebraska, he sees “nothing but land: not a country at all, but the material out of which countries are made.” Yet at the novel’s end the landscape is differentiated. It has direction and color – red grass, blue sky, dun-shaded bluffs. We...
Tuesday, September 1, 2009 by Jenny

6th grade
in my workbook it says why do you think earth looks like a blue and white marble from space ? the reason why is because there coler blind PLEASE HELP !!!!
Tuesday, September 1, 2009 by brittany

physics
what is the apparent angle the diameterof the moon subtends as seen from the earth in radians. average moon earth distance3.84*10e8 radius of the moon 1.74*10e6
Monday, August 31, 2009 by jakkila

Graphic Design
5. Which of the following statements regarding the Gestalt movement is true? A. Context has a great impact on reality. B. Expressive colors replaced traditional earth tones. C. Abstract art was born. D. Reality is given more precedence than perception. 6.
Monday, August 31, 2009 by Magic

Physics
1. What is the weight of a 24kg mass on Mars if its surface gravitaional field = 3.5N/KG? a) 235.2 N b) 84 N c) 24 kg d) 6.86 kg 2. A space shuttle is placed in a circular orbit around the Earth. It then thrusts its engine and moves to a new orbit, as shown below. Which ...
Monday, August 31, 2009 by Alfred

Physics
A very important experiment was carried out at the end of the 1800’s involving testing for the speed of the earth through the ether. (a) State the name of this experiment (b) Describe why the light beams are perpendicular to each other at one stage of the experiment. (c...
Monday, August 31, 2009 by Alfred

Physics
A student spins a 1.2kg rock around above her head horizontally in an experiment which aims to model how satellites orbit the earth. The student counts 3 orbits per second when the string produces an orbit radius of 35cm. (a) Calculate the centripetal force acting on the rock...
Monday, August 31, 2009 by Alfred

pre calc
an earth satellite in circular orbit 1250 kilometers high makes one complete revolution evry 90 min. What is it linear speed? use 6400 kilometers for the radius of the earth.
Sunday, August 30, 2009 by gab

earth science
COMPARE A HYPOTHESIS WITHA THEORY
Friday, August 28, 2009 by mohammad

Geography
Need help with these 2- 15. The six climate regions into which geographers have divided the earth are defined mainly by a. latitude and elevation b. temperature and precipitation c. atmospheric pressure d. location and landforms I'm not sure but I think it might be B or D ...
Tuesday, August 25, 2009 by mysterychicken

Geography
Can someone please help me with these questions? 7. Similar climates, vegetations, or landforms can be used to divide the earth into ________ a. political regions b. formal regions c. functional regions d. census regions I'm stuck on this one 10. The climate of Mount ...
Tuesday, August 25, 2009 by mysterychicken

Bio 100
I am researching a few animals for a scientific taxonomy and earth's biodiversity paper, and I am having trouble with one area... I chose the nine-banded armadillo and I need to answer this question....To what order does the mamal species you selected belong? Describe why ...
Monday, August 24, 2009 by Punkie

Bio 100
I am researching a few animals for a scientific taxonomy and earth's biodiversity paper, and I am having trouble with one area... I chose the nine-banded armadillo and I need to answer this question....To what order does the mamal species you selected belong? Describe why ...
Monday, August 24, 2009 by Punkie

physics
An earth satellite moves in a circular orbit with an orbital speed of 6200m/s. a) find the time of one revolution. b) find the radial acceleration of the satellite in its orbit.
Saturday, August 22, 2009 by colleen

math
The upper Angel Falls, the highest waterfall on Earth, is 750m higher than Niagara Falls. If each of the falls were 7m lower, the upper Angel Falls would be 16 times as high as Niagara Falls. How high is each waterfall? Use a chart.
Wednesday, August 19, 2009 by jessica

physics
As the earth rotates through one revolution, a person standing on the equator traces out a circular path whose radius is equal to the radius of the earth (6.38 106 m). What is the average speed of this person in meters per second?
Wednesday, August 19, 2009 by Anonymous

physics
take a satalite going around the earth... what allows us to say net force (radial) = Fg = Fr = ma were the Fg is the force of gravity exerted on the satalite were Fr is radial force and ma is the mass and acceleration of the satalite ok I understand newtons second law but what...
Monday, August 17, 2009 by physics

physics
"The actual value of computed g, assuming no drag, also varies somewhat over the earth's surface due to the earth's spin (which causes a latitude-dependent centrifugal force to get subtracted), lack of a perfect spherical shape of the earth, and the proximity of ...
Thursday, August 13, 2009 by physics

physics
Hi i'm doing that lab were you attach a weight to a tape which is also through a timer that puts marks on the tape at a given time interval ok I'm asked why is gravity different than on Earth? I don't rember the physics answer behind it I remeber Fg = G((m1 m1)/r^2...
Thursday, August 13, 2009 by physics

Physics
The diameter of the Moon is 3480km. What is the volume of the Moon? How many Moons would be needed to create a volume equal to the Earth? How do you find the volume of the Moon from just the diameter? Also, does anybody know how to figure out the volume of the Earth?
Tuesday, August 11, 2009 by Phillip

Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the Earth’s ...
Monday, August 10, 2009 by Sammy

Physics
GPS can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of the several satellites orbiting Earth. If one of the satellites is at a distance of 20,000 km from you, what percent accuracy in the ...
Monday, August 10, 2009 by Zack

Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the Earth’s ...
Monday, August 10, 2009 by Victor

check geo
places located in high latitudes have: a)the coldest climates on earth B)the same weather as places in other latitiudes. i choose a. places the atmosphere: A)create tides B)has no effect on heat gain or loss C)allows heat to escape quickly in order to cool the planet D)keeps ...
Saturday, August 8, 2009 by henry

check geo.
what are ice ages? A)periods of time glaciers receded to cover only the poles. B)eras during which earths orbit kept the planet far from the sun. C)periods of time when glaciers covered much of the earth. D)times when human and animal life thrived in high latitudes. .I chose ...
Saturday, August 8, 2009 by henry

check geo.
what are ice ages? A)periods of time glaciers receded to cover only the poles. B)eras during which earths orbit kept the planet far from the sun. C)periods of time when glaciers covered much of the earth. D)times when human and animal life thrived in high latitudes. .I chose ...
Saturday, August 8, 2009 by henry

Physics (Astronomy)
Hi, what keeps objects in orbit, for example, preventing the moon from crashing into the earth under the force of gravity? I have read that it speeds up as it gets closer to earth but I don't understand why. Can someone help me? Thanks.
Sunday, August 2, 2009 by Josh

English
I have this assignment that is due tonight and I need some help with it and these are the direction. The first stage of the journey begins in the Ordinary World. You anticipate the entire journey without knowing where it will take you. Draft the series of events and plot to ...
Monday, July 27, 2009 by Anonymous

calculus
Carbon-14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants and animals on the surface of the earth. It has a half-life (the time it takes for half the amount of a sample to decay) of approximately 5730 years. Using this known piece ...
Friday, July 24, 2009 by j

Science
Summarize the hydrologic cycle, and how important this cycle is to earth.
Monday, July 20, 2009 by mike

english
Which of the following is not characteristic of the suras in the Koran? a. They are lyrical passages. b. They are written in rhymed Arabic verse. c. They emphasize the mercy of Allah. d. They emphasize the richness of life of earth. i think the answer should be D. am i right?
Sunday, July 19, 2009 by bindiya farswani

english
The lines "Some for the Glories of This World; and some/Sigh for the Prophet's Paradise ot come" in rubá'i #13 mean a. some people believe that heaven is to be found on earth b. somepeople seek God in this world while others believe God is in heaven c...
Sunday, July 5, 2009 by y912f

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Homework Help: Science