10. what type of instrument measures seismic waves?
a. mercalli scale
b. seismic scale
c. seismometer
d. seismogram
12. all the processes that form mountain ranges are known as
a. island arcing.
b. compressive forces.
c. arch vibrations.
d. orogeny.
student b
incorrect
reference:
13. magma causes powerful and explosive volcanic eruptions.
a. andesitic
b. basaltic
c. rhyolitic
d. composite
student a
incorrect
reference:
14. lava and other materials that are launched from a volcano into the air are referred to as
a. basalts.
b. magma.
c. flows.
d. tephra.
student c
incorrect
reference:
18. the three types of seismic waves produced by an earthquake are primary, secondary, and
a. elastic.
b. surface.
c. sedimentary.
d. atmospheric.
student c
incorrect
reference:
19. describes all the processes associated with the discharge of magma, hot fluids, ash, and gases.
a. thermal energy
b. hydraulic energy
c. magnetism
d. volcanism
student c
incorrect
reference:
20. which statement best describes the richter scale?
a. it's a test given to all geologists.
b. it's a numerical system that measures the smallest seismic waves during an earthquake.
c. it's named after a scientist who studied tornadoes.
d. it's a numerical rating system that measures the largest seismic waves during an earthquake.