Unit 6: The Changing Earth TEST REVIEW

Front

What is the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle?

Back

Lithosphere

Front

What term describes the area of Earth that is covered by oceans?

Back

Ocean basin

Front

What geological activity occurs at the Mid-Atlantic Ridge?

Back

Seafloor spreading due to divergent tectonic plates.

Front

Which sectors of the ocean floor contain the newest rock?

Back

B & C

Front

What is a fossil used to establish the age of a rock layer because it is distinct, abundant, and widespread?

Back

Index fossil

Front

What is the process by which tectonic plates move apart, allowing magma to rise and create new oceanic crust?

Back

Seafloor spreading

Front

What is the term for the theory that explains the movement of Earth's plates?

Back

Plate tectonics

Front

What is the name of the boundary where two tectonic plates collide?

Back

Convergent boundary

Front

What geological feature is formed at a divergent boundary?

Back

Mid-ocean ridge

Front

What is the term for the process of one tectonic plate sliding under another?

Back

Subduction