9/14/10 BR: If I were to start digging and went straight through the Earth where would I end up? What problems might I have if I tried this? Today:The.

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Presentation transcript:

9/14/10 BR: If I were to start digging and went straight through the Earth where would I end up? What problems might I have if I tried this? Today:The Earth’s Layers, Axis, Plate Tectonics -Personal Folder -MIKVA - “A” Essay Due Wednesday

Daily Notes 9/14/10 - Earth Layers Earth Stats Earth Orbit/Axis/Seasons Summary: Questions:

Earth’s Layers The Earth is made of 3 layers- crust, mantle, and core The circumference of the earth at the equator is 24, miles The earth through the poles the circumference is a bit shorter - 24, miles Equatorial bulge caused by Earth’s spin and sun/moon’s gravity

Earth Stats 93 million miles from sun While we're hurtling through space at nearly 67,000 mph, we're also spinning around in circles at over 1000 mph! The Sun is a fusion nuclear reaction- it powers the whole system The Earth’s magnetosphere protects us from the sun’s deadly radiation

Earth Orbit It takes the Earth 1 year to go around the sun. The path the Earth takes around the sun is called the Earth’s “Orbit.”

Earth’s Axis - Earth is divided into hemispheres- equator divides N & S, while Prime Meridian divides E&W.

Earth’s Axis- 23.5° - causes seasons- the uneven distribution of heat causes ocean currents and the weather