# Tectonic Jeopardy!.

## Presentation on theme: "Tectonic Jeopardy!."— Presentation transcript:

Tectonic Jeopardy!

TECtonic Jeopardy! 10 20 30 40 50 Earth’s Layers Heat Transfer
Continental Drift Sea-Floor Spreading Plate Tectonics 10 20 30 40 50

How do scientists know about Earth’s interior?
Category

By measuring seismic waves from earthquakes.

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

Crust Mantle Outer Core Inner Core Back to Menu

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

Basalt & Granite. Basalt / Ocean crust is more dense.

Describe the Mantle. Talk about its thickness and state of matter.

The Mantle is the layer of molten material beneath the crust
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 spinning and churning of Earth’s liquid iron outer core. The magnetic field protects us from the Sun’s solar winds. Back to Menu Final Jeopardy

Define heat.

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

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

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

Define Radiation heat transfer. Give two examples.

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

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. Back to Menu

Describe the entire process pictured below.

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

Which scientist proposed the theory of Continental Drift?
Harry Hess J. Tuzo Wilson Alfred Wegener Mr. Antonello

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

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
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?

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

While researching in Antarctica, you discover the fossil remains of the tropical plant of Glossopteris. This plant is native to Australia. What does this tell you about Antarctica?

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

What do the reversing magnetic stripes on the ocean floor reveal
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
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. Back to Menu Final Jeopardy

Why is the theory of Sea-Floor Spreading important?

Harry Hess 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
Underwater mountain range where magma cools to form new crust. Stretches across all the oceans of the world. 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.

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

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

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

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

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

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

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

Plates can be classified as either Continental or Oceanic crust.

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

Convergent, Divergent, and Transform boundaries.

Locate & name the types of plate boundaries in the picture below
Locate & name the types of plate boundaries in the picture below. What is the missing boundary?

Convergent: Oceanic/Oceanic crust Subduction zone
Divergent: Mid-Ocean Ridge Transform Boundary (not shown) 2 1 Back to Menu

The Purple line on the map represents the Mid-Ocean Ridge
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 at deep-sea trenches. Back to Menu Final Jeopardy

You have 30 seconds to name as many plates as you can. Spelling counts!
10 30 20

STOP