Earthquakes Flashcards

(10 cards)

1
Q

What is an earthquake?

A

Vibrations felt on the earths surface due to rocks suddenly slipping past one another or the release of pressure as these rocks slip past one another along a fault line.

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2
Q

What is a fault plane?

A

The surface that rocks slip past one another on.

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3
Q

What is the focus/hypocentre?

A

The location below the earths surface where the earthquake starts.

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4
Q

What is the epicenter?

A

The point on the earths surface that lies directly above the focus where the vibrations originate from; most destruction here)

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5
Q

Magnitude?

A

Strength or force of earthquake

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6
Q

Seismic wave

A

Vibrations generated by an earthquake explosion or similar energetic source that are transmitted within the earth or along its surface.

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7
Q

What are the motions tectonic plates can do?

A

Slip slide and bump

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8
Q

Describe the movements of the earth: convergent, divergent plate boundaries and transform faults.

A

C- plates moving towards each other ( slide underneath each other forming mountains and volcanoes)

D- plates moving away from each other (ocean floors)

T- plates sliding past one another causing vibrations.

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9
Q

Damage if an earthquake depends on..

A

How strong it was
How long it lasted
How close the place was to the epicenter
How strong the structures were

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10
Q

Give an example of an earthquake in the Caribbean.

A

2021 Haiti, 7.2 magnitude

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