Inside the Earth

TOC: Earths Layers3/18/13I. Starter:

Calculate the Speed of an object traveling 120 miles in 3 hours.

Next, calculate the time it would take the object to get 240 miles if it traveled at that same speed.

Show your work!!!!

Practice:• Record all notes and demo observations in your practice

section.

The Earth is broken up into 3 main layersoCrust - lithosphere &

asthenosphere

oMantle – upper, middle, & lower

oCore – inner & outer

The Crust• Outer layer• 5-100 km thick• 2 types of crust• Oceanic (very

dense, made of basalt)• Continental (less

dense, made of granite)

Oceanic and Continental Crust

The Mantle• Middle layer• Very thick layer

The Core

• Made mostly of iron• 1/3 of the earth’s mass• Very hot

Earth’s Layers

• How are the earth’s layers similar to an egg?

• Shell=crust• Egg white=mantle• Yolk=core

Earth’s Layers

• How are the earth’s layers similar to an orange?

• Peel=crust• orange

slices=mantle• center=core

Earth’s Layers

• How are the earth’s layers similar to an apple?

• Peel=crust• Inside of

peel=mantle• Apple core=core

Although the Earth has 3 Main Layers - it can be further divided into these layers: • Lithosphere

• Asthenosphere• Upper Mantle• Middle Mantle• Lower Mantle• Outer Core• Inner Core

Physical Structure of the Earth(5 Layers)• Lithosphere- crust and upper

most solid mantle• Asthenosphere- solid rock

that flows slowly (like hot asphalt)- Convection happens here!• Mesosphere – upper, middle

& lower mantle• Outer Core- liquid layer• Inner Core- solid, very dense

Mantle

Connection: - Draw the below chart and complete with detailed answers

Compare and Contrast the Layers of the Earth and SunEarth layers Sun Layers How are they the same? How are they different?

Crust Photosphere

Asthenosphere Convective Zone

Mantle Radiative Zone

Core Core

IV. Exit:

•Summarize in 7 sentences what you learned about the earths composition (what its made of).