Unit 3 Lesson 3: How Do Movements of Earth's Crust Change Earth?

Earth’s crust is made up of plates that rest on the mantle. Which of the following is the best estimate of how many plates make up Earth’s crust?

• 10

• 100

• 1,000

• 10,000

Certain land features form where plates meet. Which land feature forms where two continental plates move toward each other?

• trenches

• oceans

• mountains

• glaciers

Once in a while a small area of Earth can shake enough to crumble buildings to the ground. In which layer of Earth does an earthquake begin?

• in the inner core

• the outer core

• the mantleq

• the crust

Scientists use a seismograph to measure the strength of an earthquake. Which specific aspect of an earthquake does a seismograph measure?

• the size of the energy waves

• the depth of the fault

• the total energy released

• the depth of the fault

Tags

NGSS.MS-PS3-4

Certain land features form at plate boundaries. Which land feature is likely to form most quickly?

• a volcano

• a rift valley

• a chain of islands

• a mountain range