Plate TectonicsPlate TectonicsUnderstanding what Understanding what

causes the plates to movecauses the plates to move

EQ: How do you know the Earth’s EQ: How do you know the Earth’s Core is hot?Core is hot?

Fact: No one has ever drilled Fact: No one has ever drilled through crustthrough crust

Evidence:Evidence: MagmaMagma VolcanoesVolcanoes EarthquakesEarthquakes TsunamiisTsunamiis

Layers of the EarthLayers of the Earth

asthenosphere

Inner Core

Outer Core

Lower Mantle

Upper Mantle

3 Forms of Heat Transfer3 Forms of Heat Transfer Radiation- transfer of energy without Radiation- transfer of energy without

touching; light ---touching; light --- heat energy heat energy

Conduction- transfer of heat energy Conduction- transfer of heat energy through solids (metal pan for cooking) through solids (metal pan for cooking) very evenvery even

Convection- transfer of heat energy in a Convection- transfer of heat energy in a liquid very unequal (hot spots and cold liquid very unequal (hot spots and cold areas develop that’s why you stir soups) areas develop that’s why you stir soups)

Nacho-tonicsNacho-tonics Using Nachos you can simulate why Using Nachos you can simulate why

the Earth’s plates movethe Earth’s plates move

The materials will represent the parts The materials will represent the parts of the Earthof the Earth

Nacho-tonicsNacho-tonics Pan = core (inner core specifically Pan = core (inner core specifically

since it’s a solid)since it’s a solid)

Cheese = Mantle (liquid like but high Cheese = Mantle (liquid like but high density material)density material)

Chips= Earth’s Crust (solid less Chips= Earth’s Crust (solid less dense than liquid underneath) dense than liquid underneath)

Origin of Atmosphere and OceansOrigin of Atmosphere and Oceans

Magma released gases and liquid Magma released gases and liquid Water Vapor as it came to the Water Vapor as it came to the SurfaceSurface

This can be “proven by” placing lid This can be “proven by” placing lid over pan. Lid acts as Earths over pan. Lid acts as Earths Magnetic Field Shielding Earth from Magnetic Field Shielding Earth from Solar WindSolar Wind

As a result a “thick” atmosphere As a result a “thick” atmosphere develops and clouds and rain formdevelops and clouds and rain form