Geology

DEFINITION

GEOLOGYGreek Earth

Geology = The study of Earth

The study of

INNER CORE

- HOT!!!! – Thought to be as hot as the surface of the Sun!

- Solid- Composed of Iron

and Nickel

OUTER CORE

• HOT! (but not as hot as

the inner core)• Liquid• Composed of Iron

and Nickel

MANTLE

• Still hot! – but not as hot as the core!

• Largest layer• Composed of

various materials• Solid and liquid

CRUST

• Cool• What we live on• Composed of

rocks, various materials make up the crust

• Solid or Liquid?

SOLID!!

!!Even though 70% of the Earth’s surface is water, there is crust under the water. The water sits on top of the crust!

- The Earth’s crust moves!!!!!- The continents have not always been arranged

like they are today.

- The Earth’s crust is divided into segments called plates.

http://www.uwmc.uwc.edu/geography/101/pananim.htm

Pangaea• Supercontinent that existed 250 million

years ago• All the land made up 1 continent until its

split into the modern day configuration of the continents.

• Discovered by Alfred Wegner in 1912, but not accepted by the public until after his death in the 1950’s.