1. Types of
energy
Moves
and
changes
Attract
and
repel
Transformations
And
More….
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2. Topic 1 - $100
During a storm, the power goes out at Randall'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 give off?
A. chemical
B. electrical
C. mechanical
D. thermal

3. Topic 1 - $100
D. thermal

4. Topic 1 - $200
Vincent's father is preparing noodles for dinner. He puts a pot of water on the electric stove to cook the noodles in. When the water starts to boil, he adds the noodles to the pot. What form of energy causes the noodles to cook on the range?
A. chemical
B. heat
C. light
D. mechanical

5. Topic 1 - $200
B. heat

6. Topic 1 - $300
Katie and her family are watching a fireworks display at an outdoor Fourth of July celebration. The fireworks store chemical energy, and when they are set off, they give off two forms of energy: light and which of the following?
A. electrical
B. mechanical
C. solar
D. sound

7. Topic 1 - $300
D. sound

8. Topic 1 - $400
Solar power is a technology that relies on a renewable energy resource. Solar power changes energy from the Sun into a form of energy that can be used to heat our homes and run household appliances. What form of energy must solar energy be changed into in order to run household appliances?
A. chemical
B. electrical
C. light
D. thermal

9. Topic 1 - $400
B. electrical

10. Topic 1 - $500
In many electrical factories, fossil fuels are burned to boil water and generate steam. This steam is then used to help generate electricity. What type of energy is given off by the fossil fuels and used to boil the water?
A. chemical energy
B. heat energy
C. light energy
D. sound energy

11. Topic 1 - $500
B. heat energy

12. Topic 2 - $100
While playing at the park, Erica and her sister take turns going down the slide and playing on the swings. Which of the following is an example of change that is caused by applying energy?
A. Erica continues to swing back and forth without trying.
B. When Erica pushes her sister, her sister slides down the slide.
C. Erica sits at the top of the slide and waits for her sister to finish her turn.
D. When Erica stops pushing her sister on the swings, the swing eventually comes to a stop.

13. B. When Erica pushes her sister, her sister slides down the slide.
Topic 2 - $100
B. When Erica pushes her sister, her sister slides down the slide.

14. Topic 2 - $200
Alex threw a stick in a river and watched as the river carried it away. He scooped a pail of water from the river and noticed that a leaf was floating in the pail without moving on the surface of the water. Why did the stick move in the river and the leaf stay still in the pail if it was all the same water?
A. The river water cooled off and lost energy when Alex scooped it up into the pail.
B. There is more water in the river than in the pail so the river could move the stick.
C. The water in the river has enough energy to move the stick since it is flowing downhill.
D. Wind could push the stick

15. Topic 2 - $200
C. The water in the river has enough energy to move the stick since it is flowing downhill.

16. Topic 2 - $300
When people want to use water to create electricity they generally build a dam to hold the water back, creating a large lake behind the dam. Why is it necessary to hold the water back with a dam in order to produce electricity?
A. It increases the amount of water available.
B. It increases the force with which the water flows.
C. It forces the water to flow in the desired direction.
D. It makes the water still enough to create electricity.

17. Topic 2 - $300
B. It increases the force with which the water flows.

18. Topic 2 - $400
If Maria wants to have the best chance of blowing out all of the birthday candles on her birthday cake, she should bend down close to the candles, take a deep breath, make a small opening with her lips and then push her breath out. Why does doing it this way work the best?
A. It keeps the air she breathed in cool enough to put out the candle flames.
B. It makes the air come out with enough force to blow out the candle flames.
C. The air forms a blanket over the candles and pushes the candle flames down.
D. The air spins around when it comes out and hits all the candle flames this way.

19. Topic 2 - $400
B. It makes the air come out with enough force to blow out the candle flames.

20. Topic 2 - $500
Todd 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?
A. He has to get the ball high enough in the air so the air can support it.
B. The ball's energy can only be released if he lets it go above the ground.
C. Moving his arm makes the ball's own energy take it in the right direction.
D. He has to transfer some of his muscle's energy to the ball to make it move.

21. Topic 2 - $500
D. He has to transfer some of his muscle's energy to the ball to make it move.

22. Topic 3 - $100
What effect will one positive charge have on another positive charge?
A They repel each other from a distance.
B They attract each other from a distance.
C They repel each other only when they touch.
D They attract each other only when they touch.

23. Topic 3 - $100
A They repel each other from a distance.

24. Topic 3 - $200
What is the main difference between an electric current and static electricity?
A Electrons in an electric current move by electrostatic discharge.
B Electric charges flow in an electric current but not in static electricity.
C Static electricity occurs in at least two objects. An electric current occurs in only one.
D Negative charges form static electricity. An electric current involves positive charges.

25. Topic 3 - $200
B Electric charges flow in an electric current but not in static electricity.

26. Topic 3 - $300 A It also carries current from the outlet.
The picture shows a three-pronged plug. One of the flat prongs carries current from the supply that enters the electrical outlet, and the other returns the current to the service panel of the building.
What would be a correct prediction for the purpose of the round prong?
A It also carries current from the outlet.
B It carries any extra current away, preventing a shock.
C It increases the amount of electric current entering the outlet.
D It decreases the amount of electric current entering the outlet.

27. Topic 3 - $300
B It carries any extra current away, preventing a shock.

28. Topic 3 - $400
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.

29. Topic 3 - $400
A They repel one another.

30. Topic 3 - $500
Jake hangs two balloons from a desk. When they hang normally, they are close together but they do not touch. Jake rubs one balloon with a wool cloth. He does nothing to the other balloon. What happens when he lets the balloons hang near one another?
A They push one another apart.
B They touch one another and pop.
C They touch one another and stick together.
D They are close together but do not touch.

31. Topic 3 - $500
C They touch one another and stick together.

32. Topic 4 - $100 Heat flows in which direction?
A. from solid objects to liquids
B. from larger objects to smaller objects
C. from warmer objects to cooler objects
D. from more dense objects to less dense objects

33. Topic 4 - $100
C. from warmer objects to cooler objects

34. Topic 4 - $200
Which of the following materials would be a poor conductor of electricity?
A. aluminum
B. copper
C. rubber
D. steel

35. Topic 4 - $200
C. rubber

36. Topic 4 - $300
Fireworks convert chemical energy into which of the following kinds of energy?
A. solar energy and sound energy
B. thermal energy and light energy
C. electrical energy and light energy
D. nuclear energy and kinetic energy

37. Topic 4 - $300
B. thermal energy and light energy

38. Topic 4 - $400
Megan wants to determine if an electrical circuit has electricity flowing through it. Which of the following evidence is proof that the circuit has an electrical current?
A. The circuit is a closed loop.
B. A light bulb is lit in the circuit.
C. The circuit's switch is in the closed position.
D. Wires in the circuit are made of conducting material.

39. Topic 4 - $400
B. A light bulb is lit in the circuit.

40. Topic 4 - $500
Which of the following lists the forms of energy that electricity can be transformed into?
A. heat, kinetic, light, and sound energy
B. chemical, heat, light, and solar energy
C. heat, kinetic, nuclear, and sound energy
D. gravitational, kinetic, solar, and sound energy

41. Topic 4 - $500
A. heat, kinetic, light, and sound energy

42. Topic 5 - $100
It is possible to power a small light bulb using a simple battery. Which of the following explains what is happening in the picture below?
A. Light energy in the bulb is changed to electrical energy in the battery.
B. Electrical energy from the battery is changed to light and heat energy.
C. Heat energy from the light bulb is changed to mechanical energy in the battery.
D. Electrical energy in the battery is changed to mechanical energy in the light bulb.

43. Topic 5 - $100
B. Electrical energy from the battery is changed to light and heat energy.

44. Topic 5 - $200
Amy has new roller skates. She knows that if she stands very still on a flat part of the road with her roller skates on, she will not move. She has to give a push with her foot in order to start moving. What else would cause her roller skates to start rolling?
A. getting pushed by a strong gust of wind
B. setting the roller skates in the Sun to warm
C. standing on one foot on the flat part of the road
D. smoothing the surfaces of the roller skate wheels

45. Topic 5 - $200
A. getting pushed by a strong gust of wind

46. Topic 5 - $300
Carlos wanted to know how positive and negative charges affect balloons. The balloons shown below are part of his investigation.
How could Carlos cause the balloons to attract one another and stick together?
A Give them both a negative charge.
B Give them both a positive charge.
C Give only one of them a positive or negative charge.
D Remove any positive or negative charge from both balloons.

47. Topic 5 - $300
C Give only one of them a positive or negative charge.

48. Topic 5 - $400
Olivia is combing her hair. After a while, she notices that the comb attracts the hairs on her head as shown below.
Which explanation best describes why the hairs are attracted to the comb?
A Combing the hairs caused them to lose their static charge.
B Combing the hairs caused the comb to lose its static charge.
C Combing the hairs gave them a charge that is opposite the charge on the comb.
D Combing the hairs gave them a charge that is the same as the charge on the comb.

49. Topic 5 - $400
C Combing the hairs gave them a charge that is opposite the charge on the comb.

50. Topic 5 - $500
The pictures below show objects that are charged and objects that are not charged. Which shows two objects with the same charge? A B C D

51. Topic 5 - $500 C.