8th Grade Science OST Review

Front

What layer of the Earth does a deep well or mine shaft go through?

Back

Crust only.

Front

What is the process called when sediment settles and builds up layers on the bottom of the ocean?

Back

Deposition.

Front

Where is new crust always formed?

Back

At the mid-ocean ridge.

Front

Where are the youngest rocks on the ocean floor located?

Back

At mid-ocean ridges.

Front

What do glacier scars found in Africa provide evidence for?

Back

Africa was once in an area of the Earth that had a very cold climate.

Front

What is the outermost layer of the Earth called?

Back

Crust.

Front

What is the layer of the Earth beneath the crust?

Back

Mantle.

Front

What is the term for the movement of tectonic plates?

Back

Plate tectonics.

Front

What geological feature is formed at divergent boundaries?

Back

Mid-ocean ridges.

Front

What is the process by which rocks are broken down and transported?

Back

Erosion.