2 Earth History

Question 1

Consist of the sun and everything that orbits, or travels around the sun

Answer 1

Solar system

Question 2

Any of the large bodies that revolve around the sun in the solar system

Answer 2

Planets

Question 3

The star around which the Earth orbits

Answer 3

Sun

Question 4

The solid outer most layer of our planet, a thin shell of rock that surrounds the entire earth

Answer 4

Earth’s crust

Question 5

The mixture of gases around the Earth

Answer 5

Atmosphere

Question 6

A large body of salt water that covers a significant portion of the Earths surface

Answer 6

Oceans

Question 7

The rigid outer part of the Earth, consisting of the crust in the upper mantle

Answer 7

Lithosphere

Question 8

The upper layer of the earths mantle, a portion of the earths mantle that flows like molded plastic despite being solid

Answer 8

Asthenosphere

Question 9

What were the basic steps in the formation of the Earth?

Answer 9

Protoplanetary disk of dust and gas surrounding the young sun, where materials, collided, and stuff together, forming planetesimals. These planetesimals grew through collisions and impacts, eventually forming the Earth.

Question 10

Compare and contrast the for basic parts of the Earth (air, land, water, life).

Answer 10

Atmosphere (air) is a layer of gas surrounding earth, primarily composed of nitrogen and oxygen. Geosphere (land) is the solid part of the Earth, including rocks, soil, and the earths crust. Hydrosphere (water) is all water on earth. Biosphere (life) is all living organisms on earth and their environments.