Rocks, Soils, and Fossils 3rd grade

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a living organism from a long time ago.

Front

How do fossils form?

Back

Fossils form when an animal dies and is buried quickly by sediment, which then hardens over time.

Front

What can scientists learn from fossils?

Back

Scientists can learn about the age, size, and environment of the organism, but not the sounds it made.

Front

What is sediment?

Back

Sediment is small pieces of rock, soil, and organic material that can cover and preserve fossils.

Front

What is the rock cycle?

Back

The rock cycle is the process by which rocks change from one type to another over time.

Front

What are the three main types of rocks?

Back

The three main types of rocks are igneous, sedimentary, and metamorphic.

Front

What is erosion?

Back

Erosion is the process by which rocks and soil are worn away and transported by wind, water, or ice.

Front

What causes rocks to become smooth and round?

Back

Rocks become smooth and round due to the action of fast-moving water that wears them down.

Front

What is the difference between a rock and a mineral?

Back

A rock is made up of one or more minerals, while a mineral is a naturally occurring inorganic substance.

Front

What is a rock collection?

Back

A rock collection is a group of different types of rocks that someone collects and studies.