Science Final: Plate Tectonics Flashcards
According to Wegener’s hypothesis of continental drift:
A. Earth’s surface is made up of seven major landmasses
B. the continents do not move
C. Earth is slowly cooling and shrinking
D. the continents were once joined together in a single landmass
D. the continents were once joined together in a single landmass
Which type of evidence was NOT used by Alfred Wegener to support his continental drift hypothesis?
A. evidence from landforms
B. evidence from fossils
C. evidence from human remains
D. evidence from climate
C. evidence from human remains
Most geologists think that movement of Earth’s plates is caused by
A. conduction
B. earthquakes
C. convection currents in the mantle
D. Earth’s magnetic field
C. convection currents in the mantle
The theory that states the pieces of the Earth’s lithosphere are in constant, slow motion is the theory of
A. subduction
B. plate tectonics
C. ocean trenches
D. Pangaea
B. plate tectonics
A collision between two pieces of continental crust at a converging boundary produces a
A. mid-ocean ridge
B. deep ocean ridge
C. rift valley
D. mountain range
C. mountain range
The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as
A. convection
B. continental drift
C. subduction
D. conduction
C. Subduction
The formation of the Hawaiian Islands is one example of
A. volcanoes forming over a hot spot
B. volcanoes forming along plate boundaries
C. the Ring of Fire
D. continental drift
A. volcanoes forming over a hot spot
If a volcano’s magma is high in silica, the volcano will probably
A. erupt quietly
B. remain dormant
C. erupt explosively
D. produce dark colored lava
C. erupt explosively
Tall, cone shaped mountains in which layers of lava alternate with layers of ash are called
A. shield volcanoes
B. cinder cone volcanoes
C. composite volcanoes
D. lava plateaus
C. composite volcanoes
Before lava reaches the surface, the molten material is called
A. rock
B. magma
C. volcanic ash
D. liquid fire
B. magma
A volcano that may erupt again at some time in the distant future is
A. active
B. dormant
C. explosive
D. extinct
B. dormant
Which type of stress force produces normal faults?
A. shearing
B. tension
C. compression
D. deformation
B. Tension
A fold in rock that bends upward into an arch is called
A. anticline
B. syncline
C. plateau
D. canyon
A. anticline
The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion are called
A. S waves
B. P waves
C. Surface waves
D. Mercalli waves
B. P waves
A giant wave of water approaching the shore as a result of a major earthquake, is called a
A. an aftershock
B. liquefaction
C. a tsunami
D. landslides
C. tsunami
