Know the Rocks and Minerals

Granodiorite has the following properties:

• not made by organisms

• not a pure substance

• found in nature

• no fixed crystal structure

• solid

Is granodiorite a mineral?

Galena has the following properties:

• pure substance

• naturally occurring

• solid

• not made by living things

• fixed crystal structure

Is galena a mineral?

This picture shows a desert in Asia. A desert is an environment that does not get much rain or snow.

Which rock is more likely to form from sediment deposited in a desert?

Coral reefs are often found in warm, shallow parts of the ocean. The ocean floor near coral reefs is covered by sediment.

Animals such as fish, crustaceans, and clams live in coral reefs. When these animals die, their bodies can fall to the ocean floor and become part of the sediment.

Which rock is more likely to form from sediment deposited in a coral reef?

Andesite is a type of rock. It is commonly found near volcanoes along the coast of the Pacific Ocean. When a melted rock cools at the earth's surface, it can form andesite.

What type of rock is andesite?

Schist is a type of rock. It can form when a rock is changed by high temperature and pressure. This piece of schist is dotted with dark-gray mineral grains.

What type of rock is schist?

Shale is a type of rock. It forms when layers of mud are pressed together to form rock. Shale is often found near underground deposits of fossil fuels such as oil.

What type of rock is shale?

The diagram below is a model of the rock cycle. The diagram shows how one type of rock can change into another type of rock.

Select the magma.