1. Slide show for Nov 17th
Earth Science Class

2. Science Warm-up Write in your agenda: Quiz on Earth’s Layers Wed!!
Work on your glossary or your flipbook.

3. Crust
Composition = oxygen, silicon, & aluminum, iron, magnesium, calcium
Thickness = 5 to 100 km
State of matter = solid
Less than 1% of Earth’s mass.
Temperatures range from Air temp to 1,000 Degrees Celsius
Oceanic crust is heavier than continental crust.

4. Mantle Composition = mostly magnesium, little aluminum & silicon
Thickness = 2,550 to 2,900 km
State of Matter = asthenosphere is liquid/solid and Lithosphere is solid.
Contains most of the Earth’s mass 67%
Temperatures from 1,000 to 3,700 degrees Celsius
Scientists must study volcanoes to understand!

5. Outer Core Composition = Iron & Nickel Thickness = 2,200 km
State of Matter = liquid

6. Inner Core Composition = Iron & Nickel Thickness = 1,230 km
State of Matter = solid
Makes 1/3 of the Earth’s mass.
Temperatures are 3,700 – 7,000 degrees Celsius.
This part spins (magnetic field).