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Flashcards in Earthquakes Deck (11)
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0
Q

Earthquakes are caused by tension that builds up at all _ plate boundaries.

A

3

1
Q

Earthquakes are caused by ________ _____ ________

A

Tectonic plate movement

2
Q

When the plates ____ past each other ________builds up.

A

Move pressure

3
Q

Eventually the ________ becomes too much and the plates ____ past each other.

A

Pressure jolt

4
Q

When the plates jolt past eachother it sends out _______ waves (vibrations). These vibrations are the earthquake.

A

Seismic

5
Q

The seismic waves spread out from the _____, the place in the lithosphere where the earthquake starts.

A

Focus

6
Q

The focus doesn’t have to be a single _____. For example it could be along a fault line.

A

Point

7
Q

Near the focus the waves are ________ and cause more ______.

A

Stinger damage

8
Q

The epicentre is the point directly _____ the focus on the earths surface.

A

Above

9
Q

Although most earthquakes are caused by plate movement there are other possible causes. Reactivation of old fault lines. Subsidence (where the ______ sinks) as a result of deep mining. Pressure on surface rocks from water in large reservoirs.

A

Ground

10
Q

Earthquakes cause damage in various ways they can cause __________ to collapse , cause tsunamis, avalanches, landslides, liquefaction.

A

Buildings