tectonic jeopardy!

Tectonic Jeopardy!

Tectonic Jeopardy!Earth’s Layers

Heat Transfer

Continental Drift

Sea-Floor Spreading

Plate Tectonics

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How do scientists know about Earth’s interior?

By measuring seismic waves from earthquakes.

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Starting at the surface, what are the layers of the

Earth, in order?

1. Crust2. Mantle3. Outer Core4. Inner Core

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Ocean crust is made of _______.

Continental crust is made of _______.

Which is more dense?

Basalt & Granite. Basalt / Ocean crust is

more dense.

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Describe the Mantle. Talk about its thickness

and state of matter.

The Mantle is the layer of molten material beneath the crust. It has a plastic-like state of matter and is the thickest of Earth’s layers.

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What causes Earth’s magnetic field, and why is

this field important?

The spinning and churning of Earth’s liquid iron outer core. The magnetic field protects us

from the Sun’s solar winds.

Final Jeopardy

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Define heat.

The energy transferred from a hotter object to a colder one.

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True or False: there are 4 types of heat transfer.

Name them!

False. There are 3 types of heat transfer: Conduction, Radiation, & Convection.

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Define Radiation heat transfer. Give two examples.

Radiation is heat transfer through space (do not touch directly).

Examples: the Sun & camp fire.

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If the formula for Density is Mass divided by Volume, how can heat

change an object’s density?

Heat = Energy. Giving an object Energy lets the particles move

faster & further away from each other, increasing Volume and

decreasing Density.

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Describe the entire process pictured below in 5 steps,

starting with the stove.

1. Pot is heated by stove - Conduction2. Water is heated by pot - Conduction3. Heated water spreads out (energy),

+Volume & -Density so it rises.4. Spreads out at top of pot, bumps into

other particles, -Energy.5. Less energy means -Volume,

+Density, water sinks.Back to Menu

Final Jeopardy

Which scientist proposed the theory of Continental Drift?

a) Harry Hessb) J. Tuzo Wilsonc) Alfred Wegenerd) Mr. Antonello

a) Harry Hess – Sea-Floor Spreadingb) J. Tuzo Wilson – Plate Tectonicsc) Alfred Wegener – Continental Driftd) Mr. Antonello – Theory of

Awesomeness

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How many pieces of evidence for Continental Drift does the photo below contain? What are they?

Three pieces of evidence. A) The continents fit like puzzle pieces. B)

Mesosaurus fossils were found on both continents. C) Africa & S. America have

the same folded mountains.

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What is Wegener’s Theory of Continental Drift and

why was it rejected?

The continents were once a supercontinent called Pangea, and are slowly moving, even

now. Wegener had no evidence to explain what caused the

continents to move.

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While researching in Antarctica, you discover the fossil remains

of the tropical plant Glossopteris. This plant is native to Australia. What 2 things does this tell you

about Antarctica?

•Antarctica and Australia were at one time connected (since the plant can not migrate across an ocean).

•Antarctica once had a tropical climate.

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What do the reversing magnetic stripes on the ocean floor reveal?

Use this information to explain the difference between “magnetic” North and “geographic” North.

Stripes tell us that magnetic poles reverse every 300,000 years.

Geographic North is always at 90⁰ North. Magnetic North is where the

magnetic field originates.

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Final Jeopardy

Why is the theory of Sea-Floor Spreading important?

It provides the final piece of evidence – the mechanism –

for Continental Drift.

Har

ry H

ess

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Describe the Mid-Ocean Ridge and why it’s important.

Underwater mountain range where magma cools to form

new crust. Stretches across all the oceans of the world,

driving sea floor spreading.Back to Menu

Where is old crust destroyed and what is it called when the crust sinks

back underneath, into the mantle?

The crust is destroyed at deep-sea Trenches in a process

known as Subduction.

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Studying the crust at the Mid-Ocean ridge reveals 3 pieces

of evidence for Sea-floor Spreading. What are they?

1. Formation of “pillow” basalts2. Reversing magnetic stripes3. Relative age dating of core

samples

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Describe the process of Sea-floor Spreading and why it

is like a conveyor belt.

1. Magma rises at the Mid-Ocean Ridge2. Entering the ocean, magma cools into Basalt3. New magma rises and cools, spreading the

rock out4. Old crust subducts under less dense crust

and melts5. The cycle repeats!

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Final Jeopardy

Plate Tectonics states that plates in Earth’s lithosphere move by

floating on the mantle. What are the 2 types of plates?

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Plates can be classified as either Continental or Oceanic crust.

Plate Tectonics combines the theories of Alfred Wegener & Harry Hess with a method of heat transfer.

Name the theories and method.

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Continental Drift & Sea-Floor Spreading and the heat transfer method of

Convection.

Describe the 3 types of boundaries symbolized by

the following motions.

Convergent (moving towards each other), Divergent

(moving away), and Transform boundaries (sliding past one

another).Back to Menu

Locate & name the types of plate boundaries (and crust) in the picture below. What features are at these locations, & what is the missing

boundary?

1) Convergent: Oceanic/Oceanic crust Subduction zone

2) Divergent: Mid-Ocean Ridge3) Transform Boundary (not shown)

1

2

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The Purple line on the map represents the Mid-Ocean Ridge. What type of features do you think exist along the Ring of Fire and what causes them?

The Ring of Fire marks the location of volcanic island arcs as a result of Subduction

of ocean crust at deep-sea trenches.

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Final Jeopardy

You have 60 seconds to name as many plates as you can.

Spelling counts!603010

STOP

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