Light, Heat & Sound
Mechanical Energy & Energy Causes
Change
Change
Miscellaneous
Electrical Energy
Electrical Energy
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
D. Thermal
100
Frank uses a bowling ball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by Frank applying energy to the ball?
A.He holds the bowling ball in both hands.
B.He spins the bowling ball with one hand.
C.He rolls the bowling ball across the floor.
D.He lifts the bowling ball to place it on a shelf.
A.He holds the bowling ball in both hands.
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Mechanical Energy Video (Discovery Ed)
https://app.discoveryeducation.com/learn/videos/1fe738eb-bcae-462e-880e-3dd6f58ae629/
100
Charles wants to know what the best color to wear in summer is. He designs an experiment in which he puts different-colored cups in the sun. Charles measures their temperatures every five minutes. He then records the rate at which the cups heat up in the following table.
Charles says that his results prove that you should wear white in the summer. What is he most likely basing his conclusions on?
A.The white cup looked better in the sunlight.
B.The white cup had the slowest heating rate.
C.The white cup absorbed more heat than the other cups.
D.The white cup will hold more ice water than the other cups.
B. The white cup had the slowest heating rate.
Test, Results, and Conclusion Video (Discovery Ed)
https://app.discoveryeducation.com/learn/videos/a11c8842-cfb9-49b1-9124-eb599e5fd2d2
100
Roberto makes an electric circuit that has a switch as one of its parts. The diagram below shows the circuit that he makes.
What would happen to the light bulb if Roberto changes the switch from closed to open?
A.It would be duller.
B.It would be brighter.
C.It would stop glowing.
D.It would start glowing.
C. It would stop glowing.
Switches and Circuits: Moving Electricity from One Place to Another Video (Discovery Ed)
https://app.discoveryeducation.com/learn/videos/e3e277e5-8b6b-4ee1-a915-c970b620a41d
100
It is possible to power a small light bulb using a simple battery. Which of the following explains wh
at is happening in the picture below?
A.Light energy in the bulb is changed to electrical energy in the battery.
B.Chemical 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.
B. Chemical energy from the battery is changed to light and heat energy.
Chemical Potential Energy Video (Discovery Ed)
200
Heat is produced by friction when one object rubs against another object. Which action creates the most frictional heat?
A.gently brushing face paint onto your cheeks
B.rubbing your bare hands together numerous times
C.rubbing your soapy hands together underwater
D.smoothing hand lotion onto the palms of your hands
B. rubbing your bare hands together numerous times
Friction Produces Heat Video
200
Energy is the ability to cause change, and energy is all around us. Which of these activities is NOT an example of mechanical energy being used?
A. fish swimming in an aquarium
B. warming up water on the stove
C. a child swinging
D. toy cars rolling down a ramp
B. warming up water on the stove
Types of Energy: Mechanical Energy Video (Patrick Haney)
200
Thomas and Julie wanted to find out which material would insulate their teacher's coffee cup and keep the coffee hot for the longest period of time. They first wrapped her cup with bubble wrap and recorded the temperature of the coffee once every 15 minutes for 2 hours. They repeated the investigation, this time using newspaper instead of bubble wrap, but they got the same results for both materials. What could they do to make sure their results are valid?
A. repeat their experiment
B. use tea instead of coffee
C. use a different thermometer
D. conduct their investigation in a colder room
A. repeat their experiment
Experiment Video (Discovery Ed)
200
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.
C. Give only one of them a positive or negative charge.
Electricity Video (Study Jams)
http://studyjams.scholastic.com/studyjams/jams/science/energy-light-sound/electricity.htm
200
The diagram below shows a simple electromagnet.
What effect does decreasing the number of coils around the nail have on the strength of the electromagnet?
A.It becomes weaker.
B.It becomes stronger.
C.It remains the same strength.
D.It depends how many coils are removed.
A. It becomes weaker.
How Does an Electromagnet Work? Video
300
Rosita shined a flashlight down a hallway. Which sentence best explains how the light travelled?
A.The light bounced off of the walls forming a zigzag down the hallway.
B.The light stopped shining halfway down the hallway.
C.The light travelled in a straight line down the hallway, but did not bend around the corner.
D.The light travelled in a straight line down the hallway and through the wall into the next room.
C. The light travelled in a straight line down the hallway, but did not bend around the corner.
Light Travels in a Straight Line Video
300
During soccer practice, the soccer team was practicing drills to pass the ball more quickly down the field. Which of the following demonstrates a change in motion due to the application of energy?
A.the players standing until the start whistle blows
B.the ball traveling into the goal
C.the coach blowing the whistle to begin play
D.the defender kicking the ball away from a goal
D. the defender kicking the ball away from a goal
Changes in Motion Video (Discovery Ed)
https://app.discoveryeducation.com/learn/videos/5f7e27c4-6d75-414f-8e5d-7b7fb9c8e0cd/
300
Sasha wants to compare two different brands of batteries. Which of the following experiments would help Sasha do this?
A.Use each battery brand on the same portable radio and measure how long the batteries last.
B.Compare how long it takes to recharge a size AA battery from one brand with how long it takes to recharge a size D from the other brand.
C.Use one battery brand to power a handheld fan on a hot day and the other battery brand to power the fan on a cold day.
D.Use one battery brand in a portable radio and the other brand in a remote-control car and compare their performance.
A. Use each battery brand on the same portable radio and measure how long the batteries last.
Scientific Variables Video
300
The diagram below shows the parts of a wire.
Which statement accurately describes the parts of the wire?
A.Copper and plastic are both good insulators.
B.Copper and plastic are both good conductors.
C.Copper is a good conductor, while plastic is a good insulator.
D.Copper is a good insulator, while plastic is a good conductor.
C. Copper is a good conductor, while plastic is a good insulator.
Physical Properties: Conductors and Insulators #1 Video (Patrick Haney)
300
Many appliances in your home and school use electrical energy. Which of these appliances is intended to convert electrical energy into sound energy?
A. printer
B. refrigerator
C. electric heater
D. music amplifier
D. music amplifier
Current Electricity Video (Discovery Ed)
https://app.discoveryeducation.com/learn/videos/0e983fb2-f1a2-4717-bb9b-f44dfbe6d627/
400
Gretta measured the temperature of two identical cups of water over three hours. One cup was kept in a dark cupboard. The other cup was kept under a lamp. Her data is shown in the table below.
A good scientific explanation uses both the data and an interpretation of the data. Which of the following is the best explanation for the results of this experiment?
A.Besides light energy, the lamp also gave off heat energy, which increased the temperature of the water.
B.The temperature of the water increased because the air conditioner in the room was off.
C.The temperature of the water under the lamp increased, but the temperature of the water in the dark did not.
D.The light energy turned into sound energy, which raised the temperature of the water.
A. Besides light energy, the lamp also gave off heat energy, which increased the temperature of the water.
How Much Cooler is it in the Shade of a tree? Video
400
During a hurricane, Kayla and her family lost power. She had a hand crank radio and a hand crank flashlight that she used because there was no electrical power and she wanted to conserve her batteries. What type of energy does Kayla apply to the radio and flashlight to get them to work?
A.electrical energy
B.thermal energy
C.chemical energy
D.mechanical energy
400
A balloon may stick to the wall after you rub it on hair or wool because of static electricity. Ms. Brook’s class blew up three different sizes of balloons. They rubbed each balloon with a wool mitten for five strokes. Then, they tested if the balloon would stick to the wall. What is the test variable, or the factor that changes, in the experiment?
A.the material the balloon is rubbed on
B.the size of the balloon
C.the number of strokes
D.the material the balloon sticks to
B. the size of the balloon
Bowled Over – Isolating Variables Video (Crash Course Kids)
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.
C. Combing the hairs gave them a charge that is opposite the charge on the comb.
The Sticky Balloon Trick! Video (SciShow Kids)
400
Some materials conduct electric current and other materials prevent the flow of electric current. Which object prevents the flow of electric current?
A.salt water
B.plastic straw
C.steel frying pan
D.copper water pipe
B.plastic straw
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Electric Conductors and Insulators Video (Discovery Ed)
https://app.discoveryeducation.com/learn/videos/8c912608-667d-48fe-8939-d639f2202ff6/
500
Michele plays a guitar. When she plays the highest string, she hears a sound. To hear a lower-pitched sound from that same highest string what should she do?
A.tighten the string
B.loosen the string
C.play the string harder
D.play the string more softly
B. loosen the string
The Effects of Tightening the String of a Guitar on the Pitch Video
500
A bowling ball is rolling down a lane towards a row of pins. Which of these actions does NOT indicate a change in motion?
A.The bowling ball is rolling straight down the lane.
B.The bowling ball is swung back then forward and released by the bowler.
C.The bowling ball hits a pin on the right and swerves to the left.
D.The bowling ball swerves right into the gutter then goes straight.
A.The bowling ball is rolling straight down the lane.
Force Changes Motion, Position, Direction, Shape, Size of Objects Video
500
Bradley wanted to know whether a wool sock or a cotton sock would keep something warmer. He tested the socks by putting the wool sock around cup 1 and the cotton sock around cup 2. He filled both cups with hot water. Then he measured the change in the temperature of the water after 30 minutes.
If Bradley used the materials shown in the picture above, was the experiment a fair test?
A.No, only one variable was changed.
B.No, more than one variable was changed.
C.Yes, more than one variable was changed.
D.Yes, only one variable was changed.
B. No, more than one variable was changed.
Scientific Variables Video
500
Which of the following is a complete closed circuit through which electricity will flow?
500
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