earthquakes

Question 1

focus

Answer 1

the point along a fault that which one block slides relative to another

Question 2

hit spot

Answer 2

a volcanically active area on earths surface face far from a tectonic plate boundary

Question 3

mid ocean ridge

Answer 3

a long undersea mountain chain that forms along the floor of the major oceans

Question 4

p-waves

Answer 4

a seismic wave that causes particles of rock to move in a back and forth direction

Question 5

s- waves

Answer 5

a seismic wave that causes particles of rock to move in a side to side direction

Question 6

ring of fire

Answer 6

a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes

Question 7

strike slip fault

Answer 7

a fault in which rock strata are displaced mainly in a horizontal direction, parallel to the line of the fault.

Question 8

normal fault

Answer 8

a dip-slip fault in which the block above the fault has moved downward relative to the block below.

Question 9

reverse fault

Answer 9

a geological fault in which the hanging wall appears to have been pushed up along the footwall.

Question 10

epicenter

Answer 10

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

Question 11

Richter magnitude scale

Answer 11

is a measure of the strength of earthquakes

Question 12

explosive volcano

Answer 12

In volcanology, an explosive eruption is a volcanic eruption of the most violent type.

Question 13

nonexplosive volcano

Answer 13

Nonexplosive eruptions are the most common type of volcanic eruptions. These eruptions produce relatively calm flows of lava in huge amounts

Question 14

Krakatoa

Answer 14

is a caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung.

Question 15

Yellowstone super volcano

Answer 15

is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States.

Question 16

San Andreas fault

Answer 16

is a continental transform fault that extends roughly 1,200 kilometers through California.

Question 17

shield volcano

Answer 17

is a type of volcano named for its low profile, resembling a warrior’s shield lying on the ground.

Question 18

cinder cone volcano

Answer 18

is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or cinder that has been built around a volcanic vent.

Question 19

composite volcano

Answer 19

is a conical volcano built up by many layers of hardened lava and tephra

Question 20

Mt. Vesuvius

Answer 20

is a somma-stratovolcano located on the Gulf of Naples in Campania, Italy, about 9 km east of Naples and a short distance from the shore.