Geology and Agriculture By Allah Dad Khan
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Transcript of Geology and Agriculture By Allah Dad Khan
INNER CORE
- HOT!!!! – Thought to be as hot as the surface of the Sun!
- Solid- 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?
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.
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.