Ch 17-20 Study guide Flashcards
Mount St Helen is an example of a ________ volcano.
a. cinder-cone
b. shield
c. composite
d. dormant
c. composite
Lava erupts through an opoening in the volcano called a ________.
a. tube
b. vent
c. silo
d. crater
b. vent
the largest plutons are called what? a. batholiths b. sills c dikes d. laccoliths
a. batholiths
Which of the following is Not a type of plate boundary?
a. convergent
b. divergent
c. oceanic
d. transform
c. oceanic
________ is a device that can detect small changes in magnetic fields
a. sonar
b. magnetometer
c. topography
d. waves
b. magnetometer
which of the following is NOT a type of volcano?
a. slope
b. composite
c. shield
d. cinder-cone
a. slope
________ is the rock fragments thrown into the air during a volcanic eruption.
a. lava
b. magma
c. tephra
d. ash
c. tephra
\_\_\_\_\_\_\_ magma has the greatest explosiveness, a. basaltic b. andesitic c. rhyolitic d none of the above
c. rhyolitic
the first person to suggest the continents were all one large land mass was ?
a. Wegener
b. Suess
c. Mendel
d. Ortelius
d. Ortelius
the “supercontinent” is also known as?
a. Pangea
b. Gondwanaland
c. Greenland
d. Austria
a. Pangea
a large ocean wave generated by vertical motions on the seafloor is called _________
tsunami
earthquake intensity is related to? a. earthquake length b. earthquake site c. earthquake magnitude d, none of the above
c. earthquake magnitude
the __________ is based on the size of the largest seismic wave
richter scale
The San Andreas fault is an example of this type of fault a. reverse b, normal c. strike slip d. forward
c. strike slip
All mountain ranges are form by a process called
ogogeny
The tectonic history of the Appalachian Mountains began when?
700 to 800 million years ago
Which of the following is NOT an example of a fault block mountain?
a. Grand Teton Mountain
b. Basin Mountain
c. Adirondack mountain
c. Adirondack mountain
The crust and mantle are in ________________ when the force of gravity on the mass of crust involved is based by the upward force of buoyancy.
a. balance
b. equilibrium
c. opposition
b. equilibrium
It takes _______ seismic station readings to locate the earthquakes epicenter
3
The study of earthquake waves is called?
Seismology
