Earth Science Flashcard

Front

What is the purpose of the geologic time scale?

Back

To identify when events occurred in Earth's history.

Front

What are index fossils?

Back

Fossils that can be found in different continents in a few layers and only lived during a short, specific time period.

Front

What causes plates within the mantle to move?

Back

Convection currents.

Front

What three things can change the surface of a rock?

Back

Weathering, Erosion, Deposition.

Front

What are the three kinds of rocks?

Back

Igneous, Sedimentary, Metamorphic.

Front

What is weathering?

Back

The process of breaking down rocks into smaller pieces by natural forces.

Front

What is erosion?

Back

The process by which soil and rock are removed from one location and transported to another.

Front

What is deposition?

Back

The process where materials are laid down or deposited after being transported.

Front

What is an igneous rock?

Back

A type of rock formed from the cooling and solidification of magma or lava.

Front

What is sedimentary rock?

Back

A type of rock formed by the accumulation and compaction of mineral and organic particles.