Earthquake Flashcards Preview

Science 8 > Earthquake > Flashcards

Flashcards in Earthquake Deck (20)
Loading flashcards...
1
Q

fault

A

In geology, a fault is a planar fracture or discontinuity in a volume of rock

2
Q

ring of fire

A

A large number of earthquakes and volcanic explosions.

3
Q

transform / strike-slip

A

conservative plate

4
Q

divergent / normal

A

occur where plates are moving apart.

5
Q

convergent / reverse

A

Occers when the plates collide

6
Q

P-waves

A

P-waves are a type of body wave, called seismic waves in seismology

7
Q

S-waves

A

An S wave, or shear wave, is a seismic body wave that shakes the ground back and forth

8
Q

epicenter

A

epicentrum is the point on the Earth’s surface that is directly above the hypocentre or focusepicentrum is the point on the Earth’s surface that is directly above the hypocentre or focus

9
Q

focus

A

The point on the Earth’s surface located directly above the focus of an earthquake.

10
Q

Richter scale

A

The Richter scale, developed in the 1930s, is a base-10 logarithmic scale, which defines magnitude

11
Q

explosive volcano

A

An explosive eruption is a volcanic term to describe a violent, explosive type of eruption

12
Q

nonexplosive volcano

A

A second type of volcanic eruption is a non-explosive or effusive eruption

13
Q

Krakatoa

A

Krakatoa, or Krakatau, is a volcanic island situated in the Sunda Strait

14
Q

Yellowstone supervolcano

A

The Yellowstone Caldera is the volcanic caldera and supervolcano located in Yellowstone National Park

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

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range

17
Q

shield volcano

A

A shield volcano is a type of volcano usually built almost entirely of fluid magma flows.

18
Q

cinder cone

A

A cinder cone or scoria cone is a steep conical hill of loose pyroclastic fragments

19
Q

composite volcano

A

Composite volcanoes are constructed from multiple eruptions

20
Q

hot spot

A

In geology, a hotspot or hot spot is a portion of the Earth’s surface which experiences volcanism