Tectonic Jeopardy!

Tectonic Jeopardy! Earth’s Layers Heat Transfer Continental Drift Sea-Floor Spreading Plate Tectonics

How do scientists know about Earth’s interior?

By measuring seismic waves from earthquakes. Back to Menu

Starting at the surface, what are the layers of the Earth, in order?

1.Crust 2.Mantle 3.Outer Core 4.Inner Core Back to Menu

Ocean Ocean crust is made of _______. Continental Continental crust is made of _______. Which is more dense?

Basalt Granite Basalt & Granite. Basalt / Ocean crust is more dense. Back to Menu

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. Back to Menu

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 Back to Menu

Define heat.

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

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

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

Radiation Define Radiation heat transfer. Give two examples.

Radiation is heat transfer through space (do not touch directly). Examples: the Sun & camp fire. Back to Menu

Density Mass Volume If the formula for Density is Mass divided by Volume, how can heat change an object’s density?

Energy Energy Volume Density Heat = Energy. Giving an object Energy lets the particles move faster & further away from each other, increasing Volume and decreasing Density. Back to Menu

Describe the entire process pictured below in 5 steps, starting with the stove.

Conduction 1.Pot is heated by stove - Conduction Conduction 2.Water is heated by pot - Conduction +Volume-Density 3.Heated water spreads out (energy), +Volume & -Density so it rises. -Energy 4.Spreads out at top of pot, bumps into other particles, -Energy. -Volume +Density 5.Less energy means -Volume, +Density, water sinks. Back to Menu Final Jeopardy

Continental Drift Which scientist proposed the theory of Continental Drift? a)Harry Hess b)J. Tuzo Wilson c)Alfred Wegener d)Mr. Antonello

a)Harry Hess – Sea-Floor Spreading b)J. Tuzo Wilson – Plate Tectonics c)Alfred Wegener – Continental Drift d)Mr. Antonello – Theory of Awesomeness Back to Menu

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

A) B) C) 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. Back to Menu

What is Wegener’s Theory of Continental Drift and why was it rejected?

Pangea 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. Back to Menu

Glossopteris 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?

since the plant can not migrate across an ocean Antarctica and Australia were at one time connected (since the plant can not migrate across an ocean). Antarctica once had a tropical climate. Back to Menu

magnetic geographic What do the reversing magnetic stripes on the ocean floor reveal? Use this information to explain the difference between “magnetic” North and “geographic” North.

Geographic Magnetic Stripes tell us that magnetic poles reverse every 300,000 years. Geographic North is always at 90 ⁰ North. Magnetic North is where the magnetic field originates. Back to Menu Final Jeopardy

Why is the theory of Sea-Floor Spreading important?

It provides the final piece of evidence – the mechanism – for Continental Drift. Back to Menu

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

destroyed underneath Where is old crust destroyed and what is it called when the crust sinks back underneath, into the mantle?

Trenches Subduction The crust is destroyed at deep- sea Trenches in a process known as Subduction. Back to Menu

Studying the crust at the Mid- Ocean ridge reveals 3 pieces of evidence for Sea-floor Spreading. What are they?

1.Formation of “pillow” basalts 2.Reversing magnetic stripes 3.Relative age dating of core samples Back to Menu

Describe the process of Sea- floor Spreading and why it is like a conveyor belt.

Mid-Ocean Ridge 1.Magma rises at the Mid-Ocean Ridge Basalt 2.Entering the ocean, magma cools into Basalt spreading 3.New magma rises and cools, spreading the rock out subducts 4.Old crust subducts under less dense crust and melts 5.The cycle repeats! Back to Menu Final Jeopardy

lithosphere 2 Plate Tectonics states that plates in Earth’s lithosphere move by floating on the mantle. What are the 2 types of plates?

Back to Menu Continental Oceanic Plates can be classified as either Continental or Oceanic crust.

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

Back to Menu Continental Drift Sea- Floor Spreading Convection Continental Drift & Sea- Floor Spreading and the heat transfer method of Convection.

Describe the 3 types of boundaries symbolized by the following motions.

moving towards each other moving away sliding past one another Convergent (moving towards each other), Divergent (moving away), and Transform boundaries (sliding past one another). Back to Menu

Locate & name crust features missing boundary 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 Ridge 3)Transform Boundary (not shown) Back to Menu

Back to Menu Final Jeopardy

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

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