Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Plate Tectonics > Plate Tectonics > Flashcards

Plate Tectonics Flashcards

0
Q

What are the three types of plate boundaries?

A

Convergent - collide
Divergent - separate
Transform - slide/slip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is plate tectonics?

A

The theory that the Earth is divided into plates (pieces) that move around on the asthenosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

At what plate boundaries can earthquakes occur?

A

All of them: Convergent, divergent, and transform

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

At which type(s) of plate boundaries can new sea floor is made?

A

Divergent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What happens at __________ boundary depends on the type of crust of plates.

A

Convergent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the three type of crust combinations at plate boundaries?

A

Continental - Oceanic
Continental - Continental
Oceanic - Oceanic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The most common divergent boundary is at ___-_____ _____.

A

Mid-ocean ridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

At what plate boundary. Do plates slide past each other? And what’s an example of a result of this?

A

Divergent

The San Andreas Fault

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a divergent plate boundary?

A

Where plates move away from each other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a convergent plate boundary? What are two things that can happen at convergent boundaries?

A

When plates move toward each other

Collision and Subduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a transform plate boundary?

A

When plates slide horizontally next to each other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Continental crust is less _____ than _______ crust so it doesn’t sink. It is never _________ and it is ________.

A

Dense
Oceanic
Destroyed
Permanent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Oceanic crust is heavier so it ____. It is constantly being ______ and _________ at ocean ridges and trenches.

A

Sinks
Formed
Destroyed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Some ___________ crust can carry on beyond the edges of land so it ends up _____ the sea. That explains why all the edges of continents don’t have deep trenches up against their coastlines.

A

Continental

Under

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Plates usually NEVER _______. However one exception is the _____ _________. This means the plates must either _______ or both are ______ up. To form ________ or one of the plates muse be pushed down into the mantle and be _________.

A 
Overlap
Rocky Mountains
Collide
Pushed
Mountains
Destroyed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

There are never gaps between the plates, so if two plates move apart — new ____ will be formed.

A

Rock

16
Q

The earth IS NOT getting bigger …so the amount of new crust being formed must be the same as the amount being _________.

A

Destroyed

17
Q

Plate movement is VERY SLOW. But when plates make sudden movements we call them ___________. This is the only time we are aware that the plates are moving.

A

Earthquakes

18
Q

Why did many scientists reject Wegener’s hypothesis?

A

They didn’t think that the crust could move that way because of how strong rocks were.

19
Q

On the process of sea-floor spreading, what happens when magma rises to Earth’s surface and solidifies?

A

It forms mid-ocean ridges, and if it gets above sea level, it forms land.

20
Q

The theory that explains how continents reached their current locations

A

Continental drift

21
Q

Area where sea-floor spreading takes place

A

Mid-ocean ridges

22
Q

Process of forming new oceanic lithosphere as magma rises to the surface

A

Sea-floor spreading

23
Q

What is Pangaea?

A

Super continent from about 200 million years ago

24
Q

Pangaea is the result of what?

A

Plate tectonics

25
Q

How many times have the continents come together and spread apart?

A

At least 3 times

26
Q

All volcanoes are also what landform?

A

Mountain

27
Q

Volcanoes can release what three things?

A
  • Ash
  • Gases
  • Steam
28
Q

Volcanoes are former when what happens?

A

Subduction

29
Q

Mountains can ____ then ____ ____.

A

Rise

Wear away

30
Q

Mountains are formed when ___________ plates collide.

A

Continental

31
Q

Are older or newer mountains lower and why?

A

Older because they have been eroded more.

32
Q

What’s the name of the scale that earthquakes are measured on?

A

The Richter scale

Plate Tectonics (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions