STAAR Practice

Front

What is the purpose of a food chain?

Back

To show the flow of energy through an ecosystem.

Front

What method can quickly heat water without electrical energy?

Back

Placing a metal pot of water over glowing charcoal in an outdoor grill.

Front

How do astronauts weigh on the Moon compared to Earth?

Back

They weigh less on the Moon.

Front

How long does it take to create fossil fuels?

Back

Millions of years.

Front

What process involves the gradual wearing away of rock by wind, water, and ice?

Back

Weathering.

Front

What is energy?

Back

The ability to do work or cause change.

Front

What is an ecosystem?

Back

A community of living organisms and their environment.

Front

What is mass?

Back

The amount of matter in an object.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter.

Front

What is the difference between weight and mass?

Back

Weight is the force of gravity on an object, while mass is the amount of matter in it.