Volcanoes/Earthquakes/Plate Boundaries Assessment

Block

• 1
• 4
• 5

Which event most likely takes place as the result of crustal movement along transform boundaries?

• earthquakes
• volcanic activity
• mountain building
• trenches

Which geologic feature most likely forms when an oceanic plate is slowly subducted beneath a continental plate?

• trench
• mid-ocean ridge
• Continental Hot Spot
• Continental Rift Valley

Three seismograph stations around the United States recorded vibrations from the same earthquake. Look carefully at the seismograms in the diagram below and then answer the following question. You learned that P-waves arrive at a seismograph station first. They are represented by the smaller (but not the smallest) waves on the seismogram. The first P-wave arrived at Juneau between 10:09 A.M. and 10:10 A.M. Between what time intervals did the first P-wave arrive at Honolulu?

• 10:10 and 10:11 A.M.
• 10:11 and 10:12 A.M.
• 10:15 and 10:16 A.M.
• 10:17 and 10:18 A.M.

Which process is represented by the diagram?

• beach erosion
• trench formation
• glacial movement
• island formation

Seafloor spreading occurs along certain boundaries in the ocean. Which are most likely to form at the boundary where the seafloor is spreading?

• strike-slip faults
• subduction zones
• mid-ocean ridges
• continental shelves

If an earthquake occurs at Point X, which best explains the direction in which the earthquake waves will spread?

• to the east
• in all directions
• to the north and the south
• in a straight path to the west

Which of the following is the most likely cause of earthquakes?

• shifting rock layers
• crashing meteorites
• rotation of the core
• magnetic force

What causes the tectonic plates of Earth to continually move?

• convection currents in the mantle
• volcanic and seismic activity in the crust
• strong winds and storms
• rotation of the solid core

The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion are called

• S waves.
• P waves.
• Surface waves.
• Mercalli waves.