Bellwork: • Can we dig a hole to China?• Why or why not?

1.

2.

3.

New Unit: Earth’s Interior

• Properties of the Layers of the Earth• Results of the unique properties of

Earth’s interior–Earth’s Magnetic Field–Convection and Plate Tectonics

A JOURNEY TO THE CENTER OF THE

EARTH…• How was the Earth formed?

•How do scientists study the Earth’s interior? •Why should we care what’s inside the Earth?

• What are the layers of the Earth like?

How was the Earth formed?

• Presentación A young

Earth moments

after a collision with a Mars-sized

planetoid over four

billion years ago.

© American Museum of Natural History

How do scientist study the Earth’s interior?

• Think-Pair-Share in Table Groups

How was the Earth formed?

• Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top.

How do scientists study the Earth’s interior?

1. Studying how earthquake waves move through the Earth.

2. Chemical analysis of lava and rock that have come to the surface of the Earth.

3. Modeling the Earth’s magnetic field.

What are the layers of the Earth like?

Properties of Earth’s LayersJigsaw Activity: Part 1

PROPERTY GROUPS

Group 1: Distance

Group 5. Unique Properties

Group 4:Temperature &

Pressure

Group 3: Phase Characteristics

Group 2: Density

Goals: • Collect data about properties of the layers.• Share information with your original Earth Group.

Goals: • Create an “Earth Table” describing the layers’ properties.• Each group will guide us through a tour of one layer of the

Earth.

Properties of Earth’s LayersJigsaw Activity: Part 2

LAYER GROUPSLithosphere

Inner Core

Outer Core

Lower Mantle

Asthenosphere

Center

TO DO: Part 1• Get into your “Property Groups”• Assign roles in groups

• Organizer/leader; action taker/doer; data keeper

• Gather and record data• Complete worksheet and answer your

property questionsIF YOU FINISH EARLY:1. switch property groups2. answer challenge questions

TO DO:

• Get in to Layer Groups– Share your property data thoroughly with

your layer group– Record your information in the Earth Table

• Make sure that everyone in your group has a full set of data

Earth TableStop

#Name

Depthto base of layer

(miles)

Material(composition)

Density(g/cm3)

Pressure(MPa)

Phase(s,l,p,g)

Temp.(°C)

Earth’s Surface 0 Atmosphere & Sediments

0.001 &1.5

0.1 Gas & Solid 10

Deepest Drill Hole 7.5 Granitic Rock 2.7 360 Solid 200

Crust 22 Mafic Rock & Olivine-rich Rock

3.0 1,100 Solid 600

1 Lithosphere(crust + upper

mantle)

2 Asthenosphere (middle mantle)

3 Lower Mantle

4 Outer Core

5 Inner Core

6 Center of the Earth