Science Big Idea 10

Ian was getting ready to go to sleep when he noticed the air conditioning stopped working. To help lower the temperature in his bedroom, he turned on his ceiling fan. Which type of energy is moving the air to cool the room?

• light

• thermal

• chemical

• mechanical

Mauricio puts thermometers in four identical boxes. He covers each box with a top made of a different kind of material Mauricio leaves the boxes outside on a hot sunny day. After 2 hours, which thermometer should show the highest temperature?

• F. wood

• G. rubber

• H. plastic

• I. aluminum

You rub two balloons on your hair on a dry day. Your hair is attracted to both balloons. Then, you bring the balloons near one another. How would you describe what happens to the balloons?

• A. They repel one another.

• B. They attract one another

• C. They neither attract nor repel one another.

• D. Opposite charges make one balloon become larger and one become smaller.

Kamari can throw a baseball from the outfield all the way back to home plate. Why does he have to move his arm in order to make the ball fly all that way?

• F. He has to get the ball high enough in the air so the air can support it.

• G. The ball's energy can only be released if he lets it go above the ground.

• H. Moving his arm makes the ball's own energy take it in the right direction.

• I. He has to transfer some of his muscle's energy to the ball to make it move.

5. Emma and Walter are building a complete circuit for their science inquiry in class. They want the lightbulb to turn on and off so they install a switch. The light switch can be used to open and close their circuit.

Given the information above, which statement below must be true about using a switch in a circuit?

• A. The switch must use a conductor such as rubber to open the circuit and light the bulb.

• B. The switch must use an insulator such as rubber to close the circuit and light the bulb.

• C. The switch must use an insulator such as copper to open the circuit and light the bulb.

• D. The switch must use a conductor such as copper to close the circuit and light the bulb.

6. During a storm, the power goes out at Francisco's house. His mother strikes a match to light a candle. As the match burns, it gives off light energy. What other form of energy does the burning match produce?

• F. thermal

• G. electrical

• H. mechanical

• I. gravitational

8. Selene has read that light can be reflected and absorbed. She holds a mirror to the light. She sees a spot of light on the ground near her. What conclusion can she draw?

• F. The mirror is absorbing all of the light.

• G. The mirror is bending the light onto the ground.

• H. The mirror is reflecting the light onto the ground.

• I. The mirror is not reflecting or absorbing the light.

9. Elena is designing an experiment to see whether sugar or artificial sweetener will attract the greater number of ants. Which statement best describes why Elena should write down her experimental procedure?

• A. The data will show people which ants are more common

• B. The data will help people decide what type of sweetener to use.

• C. The experiment can be changed by others to get different results.

• D. The exact experiment can be repeated by others and the results compared.

11. Mr. Sanabria is practicing his basketball skills. Which of his actions would demonstrate a change caused by applying energy to the basketball?

• A. He holds the basketball in his hands.

• B. He balances the basketball on his head.

• C. He sits on the basketball on the ground.

• D. He spins the basketball on his index finger.

12. When your hands feel cold, it can help to rub them together very quickly. This can make the skin feel warm briefly. Why does rubbing the hands together make them warm?

F.

• F. Friction creates chemical energy that produces heat.

• G. Friction between objects that are rubbed together produces heat.

• H. Movement causes the heart rate to speed up and warm the blood.

• I. Movement of your hands causes heat energy to move from where it is cooler to where it is warmer.