EES Unit 1.2 Geosphere

Which of these explains how a trench can form?

• two oceanic plates converging

• two continental plates converging

• two continental plates diverging

• two oceanic plates diverging

The plates of the crust of Earth can move. The diagram illustrates a type of plate movement.

Which geological feature would be created based on the directions of the movement of the plates?

• divergent boundary

• subduction zone

• mid-ocean ridge

• rift valley

Tectonic motion caused tension between plates in Earth’s crust. A sudden release of this energy occurred. Based on this information, which event happened?

• subsidence

• earthquake

• volcanic eruption

• meteoroid impact

In the 1960s, seismometers were installed around the world for the purpose of monitoring nuclear testing. The seismometers unexpectedly showed that most of the world’s earthquakes and volcanoes occurred in belts along the continental margins. How did these new data help support the theory of plate tectonics?

• by allowing scientists to prevent future volcanoes near tectonic plate boundaries

• by providing evidence the continents have moved extensively over time

• by providing evidence of interactions between moving tectonic plates

• by allowing scientists to predict where future earthquakes would occur

Which of the following is the most recent evidence of plate tectonics?

• volcanic activity and seafloor spreading at the mid-ocean ridges

• similar fossils found on continents that are now separated by oceans

• the observation that the continents of South America and Africa fit together like in a puzzle

• similar rock formations found on different continents that are now separated by oceans