Volcano/Earthquake Vocabulary Flashcards Preview

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Flashcards in Volcano/Earthquake Vocabulary Deck (20)
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1
Q

Fault

A

A fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock mass movement.

2
Q

Ring of Fire

A

The Ring of Fire is an area in the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.

3
Q

Transform

A

A type of fault whose relative motion is predominantly horizontal in either direction.

4
Q

Divergent

A

When it stays the same.

5
Q

Convergent

A

Coming closer together.

6
Q

P-Waves

A

A type of body wave, called seismic waves in seismology.

7
Q

S-Waves

A

A type of elastic wave.

8
Q

Epicenter

A

The point on the earth’s surface vertically above the focus of an earthquake.

9
Q

Focus

A

The location where the earthquake begins.

10
Q

Richter Scale

A

A base-10 logarithmic scale, which defines magnitude as the logarithm of the ratio of the amplitude of the seismic waves to an arbitrary, minor amplitude.

11
Q

Explosive Volcano

A

A volcanic term to describe a violent, explosive type of eruption.

12
Q

Non-Explosive Volcano

A

They are relatively calm and do not explode out of the volcano.

13
Q

Krakatoa

A

It is an Island in Indonesia that has an explosive volcano on it.

14
Q

Yellowstone SuperVolcano

A

The Yellowstone Caldera is the volcanic caldera and supervolcano located in Yellowstone National Park in the United States, sometimes referred to as the Yellowstone Supervolcano.

15
Q

San Andreas Fault

A

The San Andreas Fault is a continental transform fault that extends roughly 1300 km through California.

16
Q

Mid-Oceanic Ridge

A

An underwater mountain range, formed by plate tectonics.

17
Q

Shield Volcano

A

A broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.

18
Q

Cinder Cone Volcano

A

A steep, conical hill consisting of glassy volcanic fragments that accumulate around and downwind from a volcanic vent.

19
Q

Composite Volcano

A

A conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash.

20
Q

Hot Spot

A

A place deep within the Earth where hot magma rises to just underneath the surface, creating a bulge and volcanic activity.