Review for Energy Test

The formation of rust is a                change.

Evaporation of water is a                change.

Tearing paper in strips is                 change.

A firecracker popping is                 change.

Which is an example of a chemical change?

1. a balloon that is blown up.

2. Ice melting.

3. paper burning

4. a metal pan heating on the stove

Which is an example of a physical change?

1. Metal rusting.

2. Silver tarnishing.

3. Water boiling.

4. Paper burning.

Burning a match is a

1. chemical change

2. physical change

3. chemical property

4. physical property

Which of the following is an example of a physical change?

1. Mixing baking soda and vinegar together causes bubbles and foam.

2. A glass cup falls from the counter and shatters on the ground.

3. The paper burns up and leaves ashes.

4. Baking a birthday cake for your mother.

Which of the following is an example of a chemical change?

1. Filling up a balloon with hot air.

2. Taking a glass of water and freezing it by placing it in the freezer.

3. A plant collecting sunlight and turning it into food.

4. Your dog ripping up your homework.

A flashlight changes energy from chemical into ___________.

1. thermal

2. sound

3. electrical

4. mechanical

Potential energy is the energy an object has because of its _____________.

1. speed

2. position

3. size

4. density

A car or truck moving down the highway has _______ energy by virtue of its motion.

1. kinetic

2. potential

3. thermodynamic

4. chemical

The energy possessed by matter due to its motion is ___________.

1. potential energy

2. kinetic energy

3. static energy

4. none of the above

A toy robot can walk and talk and runs on batteries. What type of energy is stored in the batteries?

1. chemical

2. kinetic

3. nuclear

4. thermal

Which type of energy is a form of electromagnetic energy?

1. chemical

2. light

3. nuclear

4. sound

Israel observed a bolt of lightning during a storm. Which form of energy does a bolt of lightning produce?

1. electromagnetic

2. mechanical

3. nuclear

4. potential

Inside the sun, hydrogen atoms combine to form helium atoms. This process releases light and warmth. Which form of energy powers the sun?

1. electromagnetic

2. mechanical

3. nuclear fusion

4. thermal

A group of sheep are grazing in a field. As they eat, the sheep break down the molecules in the grass, which releases energy. Which form of energy is stored in the grass?

1. chemical energy

2. elastic energy

3. nuclear energy

4. thermal energy

Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?

1. when the baseball is rising

2. when the baseball is falling

3. just after the baseball hits the ground

4. while the baseball is stopped in the air.

Which energy conversion takes place when a toaster is switched on?

1. chemical to sound

2. electrical to sound

3. chemical to thermal

4. electrical to thermal

Give an example for each type.

Kinetic energy____________________________________ Nuclear energy___________________________________ Potential energy__________________________________ Heat energy______________________________________

Give an example for each type.

Thermal energy_______________________________ Chemical energy_____________________________ Electric energy_______________________________ Electrochemical energy_______________________