5th Grade Science STAAR Practice

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

What happens to water when it evaporates?

Back

When water evaporates, it changes from a liquid to a gas.

Front

What is the role of prairie dogs in their ecosystem?

Back

Prairie dogs help break up hard prairie soils and their waste adds nutrients to the soil.

Front

What is the likely effect of removing prairie dogs from an area?

Back

The population of predators that eat prairie dogs will decrease.

Front

How is a U-shaped valley formed?

Back

A U-shaped valley is most likely formed by the movement of a glacier.

Front

How long does it take for the Earth to complete one rotation?

Back

It takes 24 hours for the Earth to complete one rotation.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms and their interactions with their environment.