Test #3

Question 1

True or false: volcanoes can form underwater

Answer 1

true

Question 2

True or false: the largest volcanoes are cinder cones

Answer 2

false; composite

Question 3

True or false: large amounts of gases are released during a volcanic eruption

Answer 3

true

Question 4

True or false: molten rock beneath Earth’s surface is called lava

Answer 4

false; magma

Question 5

True or false: a seismogram is created by a seismograph

Answer 5

true

Question 6

the modern scale used by scientists to measure the magnitude of an earthquake is called the Richter Scale

Answer 6

false: moment magnitude

Question 7

What is the benefit of volcanoes

Answer 7

increased tourism

Question 8

Which tectonic plate does the Ring of Fire surround?

Answer 8

Pacific

Question 9

which of the following is not considered to be a pyroclastic material

Answer 9

pahoehoe

Question 10

as the temperature of lava increases…

Answer 10

viscosity decreases

Question 11

what type of volcano is relatively small, short-lived, and has steep sides?

Answer 11

cinder cone

Question 12

what is the name for the material ejected during a volcanic eruption

Answer 12

pyroclastic

Question 13

what is viscosity

Answer 13

a substance’s resistance to flow

Question 14

what type of volcanoes are most common in the Ring of Fire

Answer 14

composite cone

Question 15

the broad, slightly dome-shaped volcanoes of Hawaii are…

Answer 15

shield volcano

Question 16

a volcanic bomb is a…

Answer 16

piece of semi-molten rock ejected as glowing lava

Question 17

a volcano that is fairly symmetrical and has both layers of lava a pyroclastic deposits is a

Answer 17

composite cone volcano

Question 18

what forms when magma hardens in the pipe of a volcano

Answer 18

volcanic neck

Question 19

what is a lahar

Answer 19

water-soaked ash and rock sliding downhill

Question 20

what forms when the top portion of a volcano collapses after an eruption

Answer 20

caldera

Question 21

what provides the force that causes magma to erupt to the surface

Answer 21

dissolved gases trapped in magma

Question 22

an explosive eruption occurs if magma is…

Answer 22

high viscosity

Question 23

a ____ ____ volcano only erupts once in its lifetime

Answer 23

cinder cone

Question 24

energy released during an earthquake travels in ___ ____

Answer 24

seismic waves

Question 25

the point within Earth where an earthquake starts is called the ____

Answer 25

focus

Question 26

volcanoes that occue closer to the middle of a plate away from plate boundaries are called ______

Answer 26

hotspots

Question 27

magma travels fro the chamber to the crater in a long tube called the ____

Answer 27

condiut

Question 28

large broad volcanoes with runny lava are classified as ____ volcanoes

Answer 28

shield

Question 29

this type of wave, called _______, are the fastest types of wave and the first to be detected

Answer 29

p-waves