Unit 7 Review-Tectonic Plates

Which 2 plates collide to form the Himlaya Mountains?

• Nazca and Eurasian

• Indo-Australian and Eurasian

• North American and Antarctic

• South American and Indo-Australian

Which tectonic plate is directly south of the African Plate?

• North American plate

• Antarctic Plate

• Pacific Plate

• Nazca Plate

Most of the United States is part of which tectonic Plate?

• Pacific Plate

• Eurasian Plate

• North American Plate

• South American Plate

The Andes mountains in South America formed when an oceanic plate shifted beneath a continental plate. Which other landforms are usually associated with this type of plate boundary?

• barrier islands

• ocean trenches

• mid-ocean ridges

• volcanic island arcs

To which of he following phenomena do humans contribute the least?

• plate tectonics

• soil erosion

• air pollution

• deforestation

Which geologic process MOST likely caused the formation of the Mount St Helens volcano?

• converging coundaries

• diverging boundaries

• transform faults

• rift zones

Tectonic Activity causes potential energy to build up in the crust. An earthquake occurs when this potential energy is released within the crust. Which Statement BEST describes what happens when the energy is released?

• It generates seismic waves that spread out in all directions around earth

• It generates heat waves that affect climate changes around the earth

• It generates changes in the magnetic field of Earth

• It generates changes in the orbiting speed of earth

If an earthquake happened in Nevada what states around it would feel the seismic waves?

• Idaho

• Idaho, Utah

• Idaho, Utah, Oregan

• Idaho, Utah, Oregon, California

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

• Earthquakes

• volcanic activity

• mountain building

• trenches

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

• volcanic activity and sea-floor spreading at the mid-ocean ridges

• similar fossils found on 2 seperate continents

• the observation that south america and Africa fit together

• similar rock formations found on different continents