Rocks, Soils, and Fossils 3rd grade

Front

What is a rock?

Back

A rock is a solid material made up of one or more minerals or mineraloids.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What is soil?

Back

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that support plant life.

Front

How are fossils formed?

Back

Fossils are formed when the remains of an organism are buried quickly and preserved in sediment.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water.

Front

What is sediment?

Back

Sediment is small pieces of rock, minerals, and organic material that settle at the bottom of a body of water.

Front

What does hardness mean in rocks?

Back

Hardness refers to how resistant a rock is to being scratched or dented.

Front

What is the rock cycle?

Back

The rock cycle is the continuous process of rock formation, breakdown, and reformation.

Front

What is weathering?

Back

Weathering is the breaking down of rocks into smaller pieces by natural forces.

Front

What is a mineral?

Back

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and crystal structure.