Flashcards for Plate Tectonics

Front

How did the Appalachian Mountains form?

Back

Plates of Earth's crust slowly collided until one plate was on top of the other and pushed upward.

Front

Tectonic plates are found in which layer of Earth?

Back

lithosphere

Front

Where do mountain chains usually form?

Back

where tectonic plates move toward each other

Front

What is the main force that causes tectonic plates to move?

Back

convection currents in Earth's lithosphere

Front

Effects of tectonic plate movement on Earth's crust?

Back

The amount of crust on the surface of Earth is fairly stable.

Front

How were the Andes Mountains formed?

Back

Tectonic plates collided, and Earth's crust was pushed upwards.

Front

Which of the following best describes Earth's crust, according to the theory of plate tectonics?

Back

constantly, gradually moving

Front

What happens over time to the newly formed Hawaiian island when the hot spot erupts in a volcano?

Back

The plate continues to move and the newly formed island moves away from the hot spot.

Front

Composition and characteristics of the lithosphere?

Back

The rigid outer layer of Earth, including the crust and upper mantle.

Front

How does oceanic crust differ from continental crust?

Back

Oceanic crust is thinner and denser; continental crust is thicker and less dense.