To support his theory of continental drift, Wegener used all of the evidence EXCEPT

Evidence from ancient plant and animal fossils

The place where two plates meet; most volcanoes and earthquakes occur here.

The location where the food falls onto the table.

Where one country ends and another begins.

a supercontinent that contained all the continents

an ice sheet which covered several continents

the fossil of a fern found on different continents

a mountain belt linking two continents

Lystrosaurus was a slow-moving, plant-eating reptile that lived over 250 million years ago. Fossils of Lystrosaurus have been found in the brown areas shown below. How is this explained by the existence of Pangaea?

Africa, Antarctica, and India used to be joined together into a single landmass.

Lystrosaurus swam across the oceans from one continent to another.

Lystrosaurus drifted on rafts of vegetation from one continent to another.

Land bridges once crossed oceans to connect Africa, Antarctica, and India.

What is the theory of continental drift?

The continents move slowly over Earth's surface.

The continents moved millions of years ago, but now they are fixed in one place.

The continents were fixed in one place, but recently they have begun to move.

What clue supported the continental drift hypothesis?

Fossils of animals have been found on continents separated by oceans

Similar coal beds and rock structures have been found on different continents

A puzzle-like fit of all the continents

What is the source of most of the information scientists have about Earth's interior?

deep wells drilled in the ground

What defines the mechanical layers of the Earth?

how the layers move and behave due to their strength and the pressure that they are under

how the layers are separated due to their different densities

As scientists explore deeper and deeper into Earth's crust, what have they noticed about temperature and pressure?

both temperature and pressure increase

both temperature and pressure decrease

pressure increases while temperature decreases

temperature increases while pressure decreases

Which of the following is true about "S" waves ?

They cannot travel through liquid.

They travel twice as fast as "P" waves.

The motion of the wave is parallel to the direction that the wave transfers energy.

Which of the following is the best definition of density?

the amount of stuff that fits into a space

the amount of space an object takes up

the amount of space that fits into a container

Why is Earth's interior layered?

each of Earth's layers has a different density and the most dense layer sinks farthest into the planet while the least dense layer 'floats' on top

when the Earth was formed, the inner core was formed first and then each layer formed one by one on top of the inner core

the inner core is magnetic so the more magnetism that a layer has, the closer that it gets to the inner core

Which of the following is true about how heat affects fluids?

heat makes fluid less dense so it rises up

heat makes fluid more dense so it sinks

How are island chains like the Hawaiian and Galapagos archipelagos formed?

A tectonic plate moves over top of a hot spot, which vents to form each island one at a time

They are pieces that broke off of Pangaea

The islands were already there and changes in sea level made them rise up to the surface

What is occurring at Letter A on the figure?

heat is melting the oceanic crust

What happens as the seafloor spreads apart?

The older oceanic crust moves away from the mid-ocean ridge.

The older oceanic crust folds into the mid-ocean ridge.

The newer oceanic crust is pushed under the mid-ocean ridge.

Why might one plate be subducted (sink) under another plate at a convergent boundary?

One plate is denser than the other and will sink when the plates collide.

Both plates are made of the same material.

One plate is thicker than the other and will slide over the other plate.

One plate is moving faster than the other.

Which plate interaction has caused the tallest chain of volcanic mountains in the world, the Andes Mountains? (the Andes Mountains are located on the South American Plate)

the subduction of the Nazca Plate under the South American Plate

the collision of the Nazca Plate and the South American Plate

the diversion of the Nazca Plate and the South American Plate

Why doesn't the Earth's size get larger as new seafloor is created at mid-ocean ridges?

because seafloor is also destroyed by subduction at convergent plate boundaries

the Earth does actually get larger over geologic time

because the Earth's gravity keeps the Earth from getting larger

Plate Tectonics

Authored by Victoria Steele

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6th Grade

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49 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

New crust is formed at this type of plate boundary

Divergent

Convergent

Transform

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The layer of earth between the crust and the core

Crust

Mantle

Inner Core

Outer Core

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The layer of earth that is solid metal

Crust

Mantle

Outer Core

Inner core

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The type of plate boundary that forms deep ocean trenches

Convergent

Divergent

Transform

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The process that happens with an oceanic plate is pushed under a continental plate

convection

continental drift

subduction

sea floor spreading

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The german scientist who created the theory of continental drift

Pangaea

Wegener

Fossil

Continent

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The type of heat transfer in the mantle that causes the tectonic plates to move

conduction

convection

radiation

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Plate Tectonics

New crust is formed at this type of plate boundary

The layer of earth between the crust and the core

The layer of earth that is solid metal

The type of plate boundary that forms deep ocean trenches

The process that happens with an oceanic plate is pushed under a continental plate

The german scientist who created the theory of continental drift

The type of heat transfer in the mantle that causes the tectonic plates to move

Means "all land" and is the name of the great landmass that existed 245 million years ago

The thicker and less dense type of crust that forms the mountains and dry land

The liquid layer of Earth's interior

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