Earth History Investigation 1 Flashcard Review

Front

What is calcite?

Back

Calcite is a mineral that reacts with acid, causing rocks that contain it to fizz.

Front

What type of rock is Sunshine Shale?

Back

Sunshine Shale is a type of sedimentary rock found at the top of Surprise Canyon.

Front

What river carved the Grand Canyon?

Back

The Colorado River carved the Grand Canyon over millions of years.

Front

Why are there stripes in the Grand Canyon?

Back

The stripes show the different layers of rock built up from past environments.

Front

How far apart are Mile 20 and Mile 52?

Back

They are 32 miles apart.

Front

What is sedimentary rock?

Back

Sedimentary rock is formed from particles of sand, shells, pebbles, and other fragments of material.

Front

What is the significance of rock layers?

Back

Rock layers provide information about the Earth's history and past environments.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes.

Front

What role does water play in shaping landscapes?

Back

Water shapes landscapes through erosion and sediment deposition.

Front

What is the geological time scale?

Back

The geological time scale is a system of chronological dating that relates geological strata to time.