Turning on the Lights Provide Energy

Multiple Choice

Juan is practicing his basketball skills. Which of his actions would NOT demonstrate a change caused by applying energy to the basketball?

• He throws the basketball to his friend

• He balances the basketball on his head

• He bounces the basketball on the ground

• He spins the basketball on his index finger

Multiple Choice

Eileen is putting new batteries in her flashlight. Which type of energy is stored in the batteries?

• chemical

• kinetic

• light

• thermal

Multiple Choice

Jessica's teacher sometimes uses a laser pointer. The picture below shows how someone could use a laser pointer in a classroom. Which form of energy is the laser pointer an example of?

• light

• magnetism

• mechanical

• sound

Multiple Choice

Natasha sent her friend the notes below from her investigation with light.

1. Cut small holes in an index card. Use tape to attach a comb to cover the holes partially.

2. Turn off lights. Hold up a flashlight so narrow beams of light come through the comb.

3. Hold a mirror at an angle in each beam of light.

What can you infer will happen when the light hits the mirror?

• The light will be absorbed by the mirror.

• The light will be entirely blocked by the comb.

• The light will reflect off the mirror and back through the holes.

• The light will be reflected off the mirror at an angle, and then travel in a straight path.

Multiple Choice

Blake is standing in a pond looking at fish in the water. When he looks at the fish from above the water, they look large. When he looks at them from under the water, they look small. What happens to light as it travels from the water to the air?

• It stops

• It bends

• It reflects

• It is absorbed

Multiple Choice

Damon has a watch with a solar panel on it. The solar panel stores energy from sunlight. Which of the following MOST LIKELY happens when sunlight strikes the solar panel?

• Sunlight is reflected

• Sunlight is refracted

• Sunlight is absorbed

• Sunlight is transmitted

Multiple Choice

When you hear sound, it has a pitch. What is change in pitch most related to?

• how loud the vibrations are

• how long the vibrations continue

• how soft the vibrations are

• how fast the vibrations move back and forth

Fill in the Blanks

Multiple Choice

One type of energy travels as wave through matter. It causes particles to vibrate in the same direction that the wave travels. Which type of energy is it?

• chemical

• electrical

• potential

• sound

Multiple Choice

Eduardo cooks a pizza in a gas oven. Which form of energy cooks the pizza?

• chemical

• electrical

• heat

• light

Multiple Choice

Energy can flow between objects as heat. Look closely at the picture. What is one way heat is flowing in the picture?

• from the fire to the pot

• from the person's hand to the pot

• from the person's hand to the fire

• from the water in the pot to the fire

Multiple Choice

One form of energy is heat. Heat always flows between objects. What happens to the object into which heat flows?

• its temperature falls

• its temperature rises

• it changes from a liquid into a solid

• it changes from a gas into a liquid

Multiple Choice

Ellie plugs in a radio and turns it on. What change in energy takes place when she does this?

• Light energy changes into sound energy.

• Electrical energy changes into sound energy.

• Sound energy changes into electrical energy.

• Chemical energy changes into sound energy.

Multiple Choice

Gary built an electric circuit. When he finished building the circuit, he closed the switch. What happened when Gary closed the switch?

• The light came on.

• The light turned off.

• Nothing happened because there is no battery or source of electrical current.

Open Ended

Yasmine told Mike to close the open circuit in the lamp. Explain what was happening in the lamp and what happens when a circuit goes from being open to closed.

Multiple Choice

Phillip is going to stir some soup he is cooking in a pot. The soup is very hot. He wants to use a spoon that will keep his hand from getting too hot. Which material would be best for the spoon?

• aluminum

• copper

• steel

• wood

Multiple Choice

Russell is on a camping trip with his family. To warm their food, they put it in a bowl and place the bowl on a rack near the fire. Which material should the bowl be made from to allow the heat of the fire to warm the food MOST easily?

• aluminum

• plastic

• rubber

• wood