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WorksheetsUnit Test: Energy
Total questions: 26
Worksheet time: 2hrs 10mins
Which action would produce the most sound energy?
turning on a flashlight
warming food by a fire
unplugging a cord from an outlet
hitting a baseball with a wooden bat
In which forms is energy transferred when a television is turned on?
heat and light only
sound and light only
heat, sound, and electricity only
heat, sound, light, and electricity
Maria fills a glass with water. She measures the temperature of the water. Maria puts the glass in the sunlight. She measures the temperature every ten minutes for one hour. Which question is she trying to answer?
Does a glass heat faster than water?
How long does it take for the water to evaporate?
How quickly will the water cool down when heated?
Does the energy from the sun heat up the water in the glass?
One way that engineers are improving electricity generating stations is by changing from burning coal to burning garbage. Which sentence best explains which public need this new technology meets?
Burning garbage smells better than burning coal
Burning garbage decreases the amount of air pollution
Burning garbage decreases the need to use fossil fuels
Burning garbage makes better electrical currents than burning coal
Santiago says that batteries produce energy. What does he most likely mean?
Batteries make energy from nothing
Batteries are the only way energy is stored
Batteries are the original source of all energy
Batteries convert chemical energy to electrical
Terri needs to find a way to light up her closet. The device should use electricity and cost no more than 10 dollars. Which solution will solve her problem?
a chemical glow stick that costs 3 dollars
a lamp with an electrical cord that costs 25 dollars
a battery-powered flashlight that costs 15 dollars
a battery-powered ceiling light that costs 9 dollars
The lamp in Ethan's bedroom is too bright. How could Ethan control the brightness of the light bulb?
use a bigger bulb
take the light bulb out of the lamp
change the length of the wire that connects to the bulb
change the amount of energy that is being transferred to the bulb
Joey looks at pictures of ice-breaker ships breaking ice in the Arctic Circle. Ships that have more energy are better at breaking ice. Joey thinks ship 2 is better for breaking ice. Which of the statements supports his claim?
Ship 1 is white, and shorter
Ship 1 holds fewer people
Ship 2 is larger and faster
Ship 2 has lights
Tamika is shooting a bow and arrow. When Tamika pulls back on a string to shoot the arrow, energy is being _____
electrical
motion
released
stored
Tamika is shooting a bow and arrow. When she lets go of the strong, potential energy will be transferred to _______ energy.
electrical
motion
released
stored
Electronic devices work differently and are designed to serve different purposes. Which of these statements are true, about how the device works and how it affects people's lives?
Flashlights convert electricity to light so we can see at night
Portable music players convert electricity to light, so we can take music with us
Smart phones convert electricity to sound and light, so we have information at our fingertips
Flashlights convert electricity to sound so we can see at night
Jill set up an investigation with a ruler and three marbles. She pushes the single marble towards the two marbles. Which questions can be answered in this investigation? Select all the apply.
How fast can a marble move?
Do collisions transfer energy?
Do marbles release heat energy?
Will all of the marbles move the same distance?
Select the two correct statements about the energy of a wind turbine.
A wind turbine stores motion energy
Energy from a wind turbine cannot be transferred to a house
The energy from a wind turbine can be transferred to heat a house
More collisions between air molecules and a wind turbine will make the turbine move faster
Working in teams helps to make better products. Which of these pairings of scientists and engineers would make the best team to work on the project? Select all that apply.
an engineer who is designing a new battery, and a scientists who studies how to store energy
An engineer who is designing a new speaker system, and a scientist who studies converting electricity to sound
an engineer who is designing a new battery, and a scientist who studies converting stored energy to motion
an engineer who is designing a new speaker system, and a scientist who studies converting heat to electricity
Two identical balls are thrown against a wall. Ball 1 has a much higher speed than ball 2. Explain how the energy of the two balls is different.
Two identical balls are thrown against a wall. Ball 1 has a much higher speed than ball 2. Explain how the energy transfer to the wall and air would be different for ball 1.
Heidi and Jim roll a pool ball towards a second pool ball that is not moving. Describe what will happen to the rolling ball's energy when it hits the second ball.
Heidi and Jim roll a pool ball towards a second pool ball that is not moving. Describe two signs that energy is transferred in the collision.
Elaine claims the train has more energy on one part of the track. Which evidence supports her claim?
The train is speeding up between 2 and 3
The train is slowing down between 1 and 4
The train is moving fastest between 3 and 4
The train is moving slowest between 1 and 2
Elaine put a caboose (carriage) in the path of the moving train. The train collided with the caboose. Elaine knows that energy is transferred to the air because there is __________
damage to the train
sound from the collision
no light coming from the lamp
Elaine put a caboose in the path of the moving train. The train collided with the caboose. She can tell that energy is transferred from the moving train to the caboose because of the ______
speed of the moving train
forward movement of the caboose
weight of the train after the collision
Elaine thinks that the batteries are running out of energy. Which data would show that less energy is being transferred to the train?
It takes less time for the train to travel one lap
It takes more time for the train to travel one lap
It takes the same amount of time for the train to travel one lap
The train goes faster in some areas and slower in other parts of a lap
Elaine wants to test how energy is transferred in collisions. Which tests should she do? Select the two correct answers.
Add extra pieces of track to the set
Place a heavy wooden block on the track
Change the shape of the track a figure eight
Add a second train to the track that is not moving
Add a second train to the track that is moving in the same direction
Elaine sets her train up in a dark room. She puts toys around the track. As the train goes around the track she can see different toys.
Identify the type of energy that allows Elaine to see the different toys as the train moves around the track.
Elaine sets her train up in a dark room. She puts toys around the track. As the train goes around the track she can see different toys.
Explain why Elaine sees different toys as the train moves around the track.
Elaine sets her train up in a dark room. She puts toys around the track. As the train goes around the track she can see different toys.
Explain what would happen if she unplugged the batteries from her train.
