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Homework Help: Science: Earth

Recent Homework Questions About Earth

8th CCA Science
1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body.**** C. A living thing dies and its skeleton is left exposed...

science help plzzz
Multiple Choice 1. Which of Earth's spheres contains mountains, valleys, and other landscapes? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following are examples of destructive forces? (1 point) ice wind both ice and wind neither ice nor wind 3. Earth ...

English
Write this in your own words. what is Pollution? Pollution is the introduction of contaminants into the natural environment that cause adverse change.[1] Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of ...

help-3 questions
5. Which of the following is an important criterion for evaluating the effectiveness of a graphic organizer? how colorful it is how well it conveys information how many pages it is how many words it contains 6. How was information conveyed in the Google Earth tour about ...

social studies
I need to answer the questions on my study guide, it is my homework but I forgot my book,I need to read chapter 3 it's about our earth,s renewable and non renewable resources.where else I find out about it

science
What is the acceleration of a 7kg rocjet if a force of 68.6 kg m/s/s (N) is used to move it away from the earth

Physics
A 33.4 kg child, with a 3.05 kg backpack on his back, first stands on a sidewalk and then jumps up into the air. Find the force (positive up/negative down) on the sidewalk from the child when the child is (a) standing still and (b) in the air. Now find the net force (positive ...

Science
Can someone please please help me? I don't have a text book, i have a online book and it isn't working. Can someone please be nice and help me? Science isn't my subject! 1. Why is Earth’s temperature just right for life? (1 point) Earth’s core is hot enough to heat Earth...

someones GOTTA help me with this science...!!!
1. Which of the following describes the correct sequence of events during the water cycle? (1 point)precipitation ¨ condensation ¨ evaporation ¨ runoff condensation ¨ precipitation ¨ runoff ¨ evaporation runoff ¨ condensation ¨ evaporation ¨ ...

Physics
Suppose that a binary star system consists of two stars of equal mass. They are observed to be separated by 380 million kilometers and take 9.0 Earth years to orbit about a point midway between them. What is the mass of each? ------------------------------- I've worked this ...

Science
1. Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? (1 point) a solar eclipse* a lunar eclipse a total lunar eclipse a penumbra 2. Which of the following statements about a lunar eclipse is true? (1 point) A lunar eclipse can...

Science
1. Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? (1 point) a solar eclipse* a lunar eclipse a total lunar eclipse a penumbra 2. Which of the following statements about a lunar eclipse is true? (1 point) A lunar eclipse can...

physics- multiple choice
1. A transport truck pulls on a trailer with a force of 600N [E]. The trailer pulls on the transport truck with a force a) of zero b) of less than 600 N is the truck is slowing down c) equal to 600 N only if the truck is moving at constant velocity d) equal to 600 N no matter ...

Earth Science
Silver has a density of 10.5 g/cm cubed, and gold has a density of 19.3 g/cm cubed. Which would have the greater mass, 5cm cubed of silver or 5 cm cubed of gold?

science help plzzz
1. Which of the following statements best defines tides? (1 point) when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours the rise of ocean water that occurs 12 times a day a giant wave that can be extremely ...

math
a pit is dug in the shape of a cuboid with dimensions 10m*8m*3m. the earth taken out is spread evenly on a rectangular plot of land with dimensions 40m*30m. what is the increase in the level of the plot.

science
tell what you believe would happen if the earth suddenly stopped spinning and you were in the part of the world that had sunlight 24 hours a day. Include such things as how this would affect your sleep, work, school and crime.

science
Tell what you believe would happen if the earth suddenly stopped spinning and you were in the part of the world that had 24 a day.Include such things as how this would affect your sleep, work, school and crime?

Earth Science
Analogy: melting is to freezing as partial melting is to _______? a. partial freezing b. magma. c. boiling. d. fractional crystallization.

Science
1.Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? -a solar eclipse -a lunar eclipse -a total lunar eclipse -a penumbra 2.Which of the following statements about a lunar eclipse is true? -A lunar eclipse can occur when the ...

Physics
If you stood atop a ladder that was so tall that you were twice as far from Earth's center, how would your weight compare with its present value?

Physics
To better comprehend the magnitude of the gravitational force between Earth and the moon, pretend gravity is turned off and the pull replaced by the tension in a steel cable need to be?

8th Grade Earth Science Help?
Which of the following terms refers to the time it takes for one-half of the radioactive atoms in a sample of a radioactive element to decay? - relative age - absolute age - potassium-argon data - half-life** Is my answer correct?

science
all of the following are explanations for glacial periods EXCEPT. a. varying solar energy b. volcanism c. biological organisms d. Earth's orbit's precession

PHYSICS
n the lecture, we discussed the case of an isothermal atmosphere where the temperature is assumed to be constant. In reality, however, the temperature in the Earth's atmosphere is not uniform and can vary strongly and in a non-linear way, especially at high altitude. To a good...

PHYSICS(HELP)
In the lecture, we discussed the case of an isothermal atmosphere where the temperature is assumed to be constant. In reality, however, the temperature in the Earth's atmosphere is not uniform and can vary strongly and in a non-linear way, especially at high altitude. To a ...

maths
The total population of the earth was estimated to be 6.42 billion people.Given that the total land surface area of the earth is about 1.5×10^8km^2.Find the average number of people living in 1 km^2 of land on earth,correct to 2 significant figures.Thanks a lot for helping me...

science help!
A satellite is placed in orbit 100 km above the surface of the earth (radius = 6370 km, mass = 5.98 x 1024 kg). If the satellite has a mass of 1500 kg, what is the force of gravity acting on it?

physics
A satellite is placed in orbit 100 km above the surface of the earth (radius = 6370 km, mass = 5.98 x 1024 kg). What is the value of the acceleration of gravity at that altitude as a percentage of the acceleration at the surface of the earth?

What Does This Mean?
This looks like a fairly straightforward question, but I am not getting exactly what they are trying to say. "Earth's energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ...

Science
Why is freshwater a limited resource? A. because most water on Earth is in lakes B. because most water on Earth is in clouds C. because most water on Earth is in the ground D. because most water on Earth is saltwater D

Classical mechanics
In the lecture, we discussed the case of an isothermal atmosphere where the temperature is assumed to be constant. In reality, however, the temperature in the Earth's atmosphere is not uniform and can vary strongly and in a non-linear way, especially at high altitude. To a ...

Physics Classical Mechanics Help ASAP
In the lecture, we discussed the case of an isothermal atmosphere where the temperature is assumed to be constant. In reality, however, the temperature in the Earth's atmosphere is not uniform and can vary strongly and in a non-linear way, especially at high altitude. To a ...

Earth science
In a few sentences, explain how information from paleoglaciation and paleomagnetism support the idea that continental plates have moved over the past several million years.

earth
Suppose a geologist is studying two distinct areas next to a spreading ridge. The magnetic direction of the minerals in the oldest area is opposite to the magnetic direction of minerals in the newest area. (a) Which area is closest to the centre of the ridge, the older or ...

Earth Science
The Rocky Mountains are more jagged than the Appalachian Mountains. This suggests that • erosion has worn down the Appalachian Mountains more than the Rocky Mountains. • the Rocky Mountains are older. • the Appalachian Mountains are more likely to experience landslides.

SCIENCE HELP PLEASE
Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *HELP ME PLEASE*

Science
What would be the effect on the seasons and the northern and southern hemispheres if Earth were not tilted? Explain your answer. *PLEASE HELP ME*

EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon D? 4. A stream channel is formed when water A. carves a very deep and wide channel into rock. B. carries minerals into the ocean. C. creates a depression, which forms a lake. D...

EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon C? 2. Which of the following statements best describes chemical weathering? A. It happens only in cool environments. B. It's the type of weathering in which rocks and minerals ...

Physics help quick!
22. What does it mean for a force to act in accordance with an inverse square law? The square of the force is inversely proportional to the distance. The force decreases if the distance increases. The force is directly proportional to 1/r2 where r is the distance. The force is...

EARTH SCIENCE
1. What measurement best describes the results of a scientific experiment regarding volume? A. 1425 mL B. 5 quarts C. 2 pints D. 125 gallons A? 2. How is the mass number calculated for an element? A. The product of neutrons and protons B. There is no calculation. C. The ...

Science check answer quick!
I really do not understand Number 7 Which of these does Newton's law of universal gravitation imply? (Points : 1) The force of gravity between two objects is inversely proportional to the product of the two masses. <-- Earth's gravity acts on people inside a space station ...

please help me!! with this science!!!!!
Multiple Choice 1. Which sphere of the Earth system contains all living organisms? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following statements best describes the geosphere? (1 point) the sphere that consists of solid rock layers near Earth’s ...

physics
What is the ratio of the spin angular momentum of the earth and its orbital angular momentum about the sun. The mean radius of the earth is R=6400km. The radius of the earth's orbit is r=1.5*10^8km. You may assume the mass of the earth is uniformly distributed throughout its ...

science
Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION*

Science help.
Where is most freshwater on Earth found? lakes and rivers oceans and seas underground ice caps and glaciers How does algal growth caused by agricultural waste kill marine organisms? by blocking sunlight and depleting oxygen by increasing oxygen levels in the water by ...

physics
rank the average gravitational force from greatest to least between (a) sun and mars (b)sun and moon (c) sun and earth include an explanation PLEASE!!!!

biology - natural selection
Which of these is the foundation for relative dating? A. Earth is very old. B. Deeper rock strata are older. C. Radioisotopes decay at a constant rate. D. Organisms can be closely related to each other.

science
Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION*

Physics
The sun outputs 1380 W/m^2 of energy at the earth's surface. A small rectangular las has the following dimensions: 1km wide, 1.4km long, and 300m deep A) Calculate the thermal energy added to the lake if exposed to 12h of direct sunlight. B) calculate the increase in ...

science
Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION* Answer this Question

science/planets
Q: What two things does Earth have in common with the outer planets called gas giants? A: A)relative temperatures above freezing B)moons and magnetic field C)fairly long days and short nights D)volcanic activity and geysers

Science help.....
Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this time period not really considered a partof Earth’s ...

physics
We release an object of mass M at zero speed at a distance of 2*10^6 Km from the center of the earth. What is the speed at which the object hits the earth? G=6.67*10^-11; g= 9.8 m/s; M=5.97*10^24; r=6.3781*10^6 Suppose the mass of the object is M= 500 kg. What is the kinetic ...

Physics
The shuttle must perform the de-orbit burn to change its orbit so that the perigee, the point in the orbit closest to Earth, is inside of Earth's atmosphere. De-orbit maneuvers are done to lower the perigee of the orbit to 60 miles (or less). An altitude of 60 miles is ...

Physics
The shuttle must perform the de-orbit burn to change its orbit so that the perigee, the point in the orbit closest to Earth, is inside of Earth's atmosphere. De-orbit maneuvers are done to lower the perigee of the orbit to 60 miles (or less). An altitude of 60 miles is ...

Physics
A proposed space station includes living quarters in a circular ring 46.5 m in diameter. At what angular speed should the ring rotate so the occupants feel that they have the same weight as they do on Earth?

help please English
If this be error and upon me proved/ I nevered writ, nor no man ever loved." What is the impact of these concluding lines from shakespeare's sonnet 116? 1. They underscore the fact that everyone makes mistakes 2. They underscore the fat that shakespeare is a writer 3.They ...

help please English
If this be error and upon me proved/ I nevered writ, nor no man ever loved." What is the impact of these concluding lines from shakespeare's sonnet 116? 1. They underscore the fact that everyone makes mistakes 2. They underscore the fat that shakespeare is a writer 3.They ...

English
9. Read these line, from The Passionate Shepherd to his love. "The country swains shall dance and sing/For they delight each May morning.?If these delights thy mind may move,/Then live with me, and be my love." What sort of life is the shepherd offering the numph? 1.Turbulent ...

Physics 11 Forces Unit
I'm not sure if my answers are correct. Your help will be greatly appreciated. Thanks in advanced! 1. two very large cruise ships each have a mass of 415000 tonnes. If they were docked side by side, 1.0m apart, their centres would be 60m apart. What is the force of ...

3-D Coordinates Polar coordinates Precalculus Trig
The U.S.S. Lollipop is on assignment in the Atlantic Ocean. It travels from a longitude of 70 degrees west to 20 degrees west, along the latitude of 40 degrees north. How far does it travel? (Assume that the radius of the Earth is 6,400 km.) Erm I don't know how to solve this...

science
Earth's atmosphere,oceans, and continents began to form during the first several hundred million years a) Precambrian time b) the Paleozoic era c) the Mesozoic era d) the Cenozoic era

Marketing
Create a pitch to a potential green-product advertiser stating the benefits of advertising in Mother Earth News.

Physics
Mutiple choice: A car travelling at 10 m/s accelerates at 3 m/s^2. Its new velocity is A.) 12 m/s B.) 22m/s C.) 17 m/s D.) Can not be determined. Which of the following is not acceleration? A.) rate of change of speed in a particular direction B.) rate of change of motion in a...

English
9. Read these line, from The Passionate Shepherd to his love. "The country swains shall dance and sing/For they delight each May morning.?If these delights thy mind may move,/Then live with me, and be my love." What sort of life is the shepherd offering the numph? 1.Turbulent ...

Science
One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from Earth. If you are about 11 years old now, how old will you be when light that is leaving Arcturus today reached Earth? How far, in kilometers, will it have traveled? please explain ...

Intro to Marketing
My instructor wan me to Create a pitch to a potential green-product advertiser stating the benefits of advertising in Mother Earth News.

Introduction To Marketing
Create a pitch to a potential green-product advertiser stating the benefits of advertising in Mother Earth News.

Quick science question
In the newspaper one day, you read that the highest tides of the season are expected in the next month. What can you infer about the positions of the Sun, Earth, and the Moon? What phase of the Moon will probably be visible?

science
what are some ways Earth is protected by its atmosphere?

Help Science!!! :( need help
Is earth an inner planet or outer planet???

Science help, Ms.Sue
1. After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record? an earthquake or motion along a fault new deposits of sediment must build up on the eroded area folding of sedimentary rock layers a volcanic eruption...

Science help,plz:)
Okay, these are my last questions of the day.... 1. After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record? an earthquake or motion along a fault new deposits of sediment must build up on the eroded area ...

science
Which of the following best supports the idea that the melting of glaciers in Antarctica is a global environmental threat? A. The melting of glaciers can cause sea levels on Earth to fall. B. The melting of glaciers can change ecosystems in Antarctica. C. The melting of ...

Science-bobpursley/Ms.Sue
1. A trilobite is considered an index fossil because this organism existed during a limited period in Earth's history. That means that any fossil located in a layer of rock beneath a layer containing trilobite fossils is ____________ than a trilobite. 2. According to this ...

Astronomy help
I have already solve the problems in many time, but still cannot get the correct answer, can someone kindly help me to solve the problem, please? 1. Suppose the Moon is at a (center-to-center) distance D from Earth. Find an exact expression for the magnitude of the tidal force...

science
I really need help with science and this is the questin reason for blank because earth is titled 23 1/2 from a line perpendicular to it's orbit,the legth of daylight varies and because of the angle at which the sun's energy strikes a given location through the year.

Check my Science questions?
1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of the following terms ...

physics
An airplane with a speed of 46.4 m/s is climbing upward at an angle of 44° counterclockwise from the positive x axis. When the plane's altitude is 700 m the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...

earth
3. What can scientists learn from the rate at which radioactive elements decay?

Science help,Anyone?
1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of the following terms ...

Science help,please...
1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of the following terms ...

science
which of the following will make it harder in the future to develop sustainable methods for humans using resources? A. there will be fewer renewable resources B.more humans will populate the earth C.biodiversity naturally reduces over time D.more humans will recycle materials

Astronomy
1. Consider an asteroid of radius 2 km and density 2,500 kg/m^3 impacting the Earth. When it collides with the surface its kinetic energy is, to a large extent, dumped into the environment, some as heat vaporizing rock and some as mechanical energy throwing rock to great ...

Astronomy
The volume of a ball is given in terms of its radius by V=(4*pi/3)*R^3. Use this to find the average density of Nursat, i.e. the mass per unit volume. Use Earth'€™s mass in kg from the Table of Constants to express your answer in kg/m3.

Astronomy
1. At opposition, Nursat(is observed to be in opposition every 374 days.) is observed to subtend an angular radius of 7.1523 arcseconds. Use this and the conversion factors in our Table of Constants to find the radius of Nursat in km. 2. Nursat has a moon, Sunaj, which is ...

Astronomy
A possible trajectory for sending a spacecraft to Mars is an elliptical orbit with Earth at its perihelion and Mars at its aphelion. The craft would be launched out of low-Earth orbit by a quick burst of rockets into solar orbit, and would then "coast'' until rockets fire ...

english
Read the paragraph below and complete the cause-and-effect chart. Erosion is a natural process. During the erosion process, soil and rocks are worn away by the elements. Most erosion results from a combination of several factors, including heat, cold, gases, water, wind, ...

math
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?

math alegebra
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?

meteogology
Does the equator receive perpendicular sun rays to the Earth's surface most of the 365 day year.

Physics
The gravitational acceleration on the surface of Mercury is 0.38 times that of Earth. Its radius is also about 0.38 times that of the Earth. What is the ratio of the density of Mars to that of Earth?

Astronomy
1. Imagine that the Earth¡¦s spin were to be reversed, so that the planet rotated about its axis from East to West, at the same rate at which it now rotates from West to East. If Earth¡¦s orbital motion about the Sun were unchanged, which of these describe the changes we ...

Astronomy
Star Right Ascension Declination Aldebaran 4h 36m 16¢X 31' Miaplacidus 9h 13m -69¢X 42' Deneb 20h 41m 45¢X 20' Regulus 10h 08m 12¢X 18' Hadar 14h 04m -60¢X 24' 1.If Aldebaran is crossing your local meridian, how long would you need to wait to see Regulus cross the ...

physics
A satellite of mass 225 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth. (The mass of the Earth is 5.98 1024 kg, and the radius of the Earth is 6.38 103 km.) (a) Assuming a circular orbit, what is the orbital period of this ...

physics
Suppose a driver's car needs to travel 46.4 miles in 1.000 hour at a constant speed. If the tires of the car have a rolling radius of 28.4 cm, what will be the period of rotation of each tire? Suppose a moon of a planet in a distant solar system has an average orbital radius ...

earth
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?

Science help (just 4 questions)
1. Which of the following is an example of an environmental pressure? (1 point) the air pressure in the atmosphere a lake that is gradually running out of water a fight between two members of the same species breeding between two members of the same species 2. Which of the ...

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Homework Help: Science

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