chapter 6 vocab Flashcards

0
Q

Continental drift

A

Continents are in constant motion on the surface of earth

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

Pangaea

A

All the continents were once part of a super continent called…

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

Mid ocean ridge

A

Mountain ranges in the middle of the ocean

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

Sea floor spreading

A

New oceanic crust forms along a mid ocean ridge and older oceanic crust moves away from the ridge

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

Normal polarity

A

A state in which magnetized objects such as compass needles will orient themselves to point north

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

Magnetic reversal

A

The magnetic field reverses direction

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

Reverse polarity

A

A state in which magnetized objects would reverse direction and orient themselves to point south

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

Plate tectonics

A

Earths surface is made of rigid slabs of rock or plates that move with respect to each other

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

Lithosphere

A

The cold and rigid outermost rock layer

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

Divergent plate boundary

A

Forms when Two plates separate

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

Transform plate boundary

A

Forms when two plates slide past eachother

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

Subduction

A

The denser plate sinks below the more buoyant plate

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

Convergent plate boundaries

A

Where two plates collide

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

Convection

A

The circulation of material caused by differences in temperature and density

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

Ridge push

A

Rising mantle material at mid ocean ridges creates the potential for plates to one away with a force

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

Slab pull

A

As a slab sinks it pulls on the rest of the plate with a force