Geology.

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Presentation transcript:

Geology

GEOLOGY Geology = The study of Earth DEFINITION Greek Earth

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.