What is energy?

• The weight of an object.

• The ability to do work or cause change.

• The color of light.

• The amount of space an object takes up.

What force pulls objects towards the center of earth?

• Magnetic force

• Friction

• Gravity

• Air resistance

How can humans reduce their impact on the environment?

• Cutting down more trees

• Using more plastics

• Recycling and reusing materials

• Driving more cars

Which process causes rocks to break down into smaller pieces over time?

• Earth quake

• Glacier

• Volcano

• Weathering

What is one way to conserve water?

• Taking longer showers

• Watering lawns every day

• Fixing leaky faucets

• Leaving the tap running while brushing teeth

Janice and Monica do the same investigation. They have different results. What should they do?

• Do a different test.

• Repeat the test.

• Throw away the results.

Which time of day does the Sun appear highest in the sky?

• midnight

• noon

• sunset

• sunrise

Which describes a change that takes place when a chocolate bar melts?

• A solid becomes a gas.

• A liquid becomes a gas

• A solid becomes a liquid.

• A liquid becomes a solid.

Which of the following processes is responsible for changing liquid water into water vapor?

• photosynthesis

• condensation

• evaporation

• precipitation

How are plants important to the environment?

• They give oxygen to the environment

• Watching television.