Can we dig a hole to China? Why or why not? 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? A young Earth moments after a collision with a Mars-sized planetoid over four billion years ago. © American Museum of Natural History Presentación Show the video of how the Earth was formed Discuss how where the sources of heat come from. Why are there layers? Differentiation..

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? Studying how earthquake waves move through the Earth. Chemical analysis of lava and rock that have come to the surface of the Earth. Modeling the Earth’s magnetic field.

What are the layers of the Earth like?

Properties of Earth’s Layers Jigsaw Activity: Part 1 Group 1: Distance Group 2: Density PROPERTY GROUPS Group 3: Phase Characteristics Group 4: Temperature & Pressure Group 5. Unique Properties Outline Jigsaw Group Structure Each one of you will be in an Earth Group and a Property Group Outline Goals for Each Group Goals: Collect data about properties of the layers. Share information with your original Earth Group.

Properties of Earth’s Layers Jigsaw Activity: Part 2 LAYER GROUPS Lithosphere Asthenosphere Lower Mantle Outer Core Inner Core Outline Jigsaw Group Structure Each one of you will be in an Earth Group and a Property Group Outline Goals for Each Group Center Goals: Create an “Earth Table” describing the layers’ properties. Each group will guide us through a tour of one layer of the Earth.

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 questions IF YOU FINISH EARLY: 1. switch property groups 2. 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

to base of layer (miles) Earth Table Stop # Name Depth to base of layer (miles) Material (composition) Density (g/cm3) Pressure (MPa) Phase (s,l,p,g) Temp. (°C) Earth’s Surface 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 1,100 600 1 Lithosphere (crust + upper mantle) 2 Asthenosphere (middle mantle) 3 Lower Mantle 4 Outer Core 5 Inner Core 6 Center of the Earth