7th Grade Science Final Exam - Physical Science

Front

Which of the following is a physical change?

• Burning wood
• Rusting iron
• Melting ice
• Baking a cake

Back

Melting ice

Front

Examples of matter.

Back

Air and water

Front

Which particles are found in the nucleus of an atom?

Back

Protons and neutrons

Front

Mass and weight are different because:

Back

Mass is the amount of matter in an object, while weight is the force of gravity on that object.

Front

At what time does a moving object stop according to a speed-time graph?

Back

When the speed is zero

Front

What form of energy is stored in food?

Back

Chemical

Front

Label the parts of an atom.

Back

Proton, neutron, and electron are the three main parts of an atom.

Front

Real-life example of Newton's Third Law:

• A person jumping off a boat and the boat moving backward
• A car accelerating on a straight road
• A ball rolling down a hill
• A plant growing towards sunlight

Back

A person jumping off a boat and the boat moving backward

Front

Which of these best conducts electricity? Plastic, Wood, Copper, Glass

Back

Copper

Front

What happens to molecules in a substance when it is heated?

Back

They move faster