Earth Science Questions?

[airjogger]

Answer all 12 with correct answers and have a good source for best answer.

1. How was the Earth formed?

2. How was early Earth like (climate, land mass, etc.)?

3. What is pillow lava, and waht does it tell us about the early Earth?

4. Why did the crust start to form?

5. What were the two sources of Earth's water?

6. How did the early oceans come to exist?

7. How did the continents form?

8. How did the formation of continents change the environment?

9. Stromatolites made what?

10. What caused the first mass extinction?

11. What formed our supplies of coal, natural gas, and crude oil?

12. What caused the mass extinction at the end of the Permian?

[CAleb waters]

1. Big Bang then rock chunks smashing together
2. The earliest was extreme heat no life possible
3. lava under water (pohouhou) not aa
4. the earth distance from the sun let the crust form...
5. asteroids and asteroids
6. the earth distance from sun makes liquid water possible and once they flowed to the lowest points they made all the ocean.
7. Plate techtonics
8. They moved to different latitude and based on the angle of the sun have different weather and temperature....like the equator which is tropical... the poles are freezing and north America is a mix of desert droughts (southern California) and snowing like in Boston.
9. Stromatolites are animals they aren't made of anything...
10.Which one... most were asteroids!!!
11. Either heat and pressure or maybe asteroids.
12. That was a big asteroid just like the end of the Cretaceous.

[Kristenite]

1. How was the Earth formed?
http://www.mcwdn.org/MAPS&GLOBES/Earth.html

2. How was early Earth like (climate, land mass, etc.)?
http://www.mcwdn.org/MAPS&GLOBES/Earth.html

3. What is pillow lava, and waht does it tell us about the early Earth?
Lava that has flowed underwater . . . which causes the lava to form large bulbous spheres, which look like pillows

4. Why did the crust start to form?
Earth Began to cool off as said on sites above

5. What were the two sources of Earth's water?
Ocean, lakes, rivers, comets Read your text book, it may have the right answer.

6. How did the early oceans come to exist?


7. How did the continents form?
The sliding of plates from what use to be called pangea "Super Contenant" broke apart because of contenental drift.

8. How did the formation of continents change the environment?
Mountain ranges were formed, location accounts for climate, and fault boundaries determines Volcanism etc.

9. Stromatolites made what?
http://www.wisegeek.com/what-are-stromatolites.htm your text book will have the answer more available

10. What caused the first mass extinction?
Most people say a meteor

11. What formed our supplies of coal, natural gas, and crude oil?
http://www.unctad.org/infocomm/anglais/gas/characteristics.htm
12. What caused the mass extinction at the end of the Permian?http://www.mineralogie.uni-wuerzburg.de/palbot/evolution/ptrextinction.html
hope these help