Plate Tectonics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Crust

A

The outermost shell of a rocky planet

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

Mantle

A

layer of molten between the crust and core

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

Core

A

Made up of mostly iron. separated into the outer core (Molten) and inner core (solid)

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

Tectonic plate

A

The layer of rock that makes up the outer part of the earth, including the crust and upper (lithospheric plates)

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

Continental drift theory

A

The theory that continents gradually drifted over time to their present position.

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

Asthenosphere

A

A thin layer of earth, about 150 miles thick, at the border between the mantle and the crust.

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

Convection current

A

In which the hotter gasses or liquid rises to the top and the cooler, denser parts sink.

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

Convergent boundaries

A

When two tectonic plates come togther.

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

Mountains

A

Uplift of crustal plates that form elevated landmasses

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

Volcanoes

A

A vent or fissure in the earth in which magma and gasses are expelled

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

Divergent boundaries

A

When tectonic plates split apart

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

Transform Boundary

A

When tectonic plates slide past or against each other.

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

Fault

A

Breaks in the crust. The movement causes seismic waves which produces earthquakes.

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

Mid-Ocean ridge

A

A long ridge of underwater volcanoes between two diverging oceanic plates.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Subduction zone

A

A place where one tectonic plate sinks under another and melts. Also forms a trench.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

rift valley

A

A long narrow valley between to diverging continental plates.