Plate Tectonics

Where in Earth do convection currents happen?

• In the mantle.

• Inner core.

• At the crust.

• Outer core.

At some plate boundaries, one of the tectonic plates moves under the other plate.

What is this process called?

• Reduction.

• Subduction.

• Convection.

• Induction.

Tags

NGSS.MS-ESS2-3

Movement of Earth's tectonic plates appears to be caused by...

• light from the moon.

• temperature differences in Earth’s inner core.

• temperature differences in Earth’s mantle.

• light from the sun.

Tags

NGSS.MS-ESS2-3

Which of these is most responsible for the motion of the tectonic plates that make up Earth's crust?

• Light from the moon.

• Light from the sun.

• Temperature differences in Earth’s mantle.

• Temperature differences in Earth’s inner core.

Tags

NGSS.MS-ESS2-3

What is a tectonic plate?

• A large chunk of the ocean floor.

• A large chunk of crust and upper mantle.

• A large chunk of the lower mantle.

• A large chunk of Earth below a continent.

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

What is the difference between continental crust and oceanic crust?

• Continental crust is thinner.

• Oceanic crust moves easily. Continental crust does not move.

• Continental crust moves easily. Oceanic crust does not move.

• Oceanic crust is thinner.

In a convection cell, what happens at the lower mantle?

• Rock gets warmer and stays at the same level.

• Rock gets colder and rises.

• Rock gets colder and stays at the same level.

• Rock gets warmer and rises.

What is true of tectonic plates?

• Tectonic plates are always made of oceanic crust.

• Tectonic plates can be either all continental crust or all oceanic crust.

• Tectonic plates can have parts that are continental crust and parts that are oceanic crust.

• Tectonic plates are always made of continental crust.

Complete the sentence.

Earth’s tectonic plates are made of ________.

• the crust only

• the upper and the lower mantle

• the lower mantle only

• the crust and the upper mantle

Study the image.

Which arrows show convection currents?

• 1 and 2.

• 3 and 4.

• 2 and 4.

• 1 and 3.

Tags

NGSS.MS-ESS2-6