Share 4th Grade Energy Test Review - Stolkner
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Athena picks up a book from the ground. She drops is back on the ground. Which claim describes how the book's energy before it is picked up compares to its energy after it falls?
The book has the same potential energy before and after it falls.
Max pulls his sister in a wagon on a flat sidewalk. What is the source of energy that moves the wagon?
Kinetic energy from the rolling wheels
A book falls on the floor. What is the main form of energy that results when the book strikes the floor?
Sound energy
Violet toasts a piece of bread in a toaster connected to a wall outlet. What is the source of energy for the toaster?
Electrical energy
Solar energy is one type of alternative energy currently being investigated. Does solar energy pollute the air?
No
A town in Florida has enough solar panels to provide energy to each house in the town. One solar panel can generate enough energy for 4 homes. If the town has 8,000 solar panels, how many homes are in this Florida town?
32,000 homes
A boy's guitar makes a higher sound than a girl's drum. What is a reason for this?
The guitar's parts vibrate more quickly than the drum's parts.
A red rubber band is stretched to point A making it 14 cm long. A blue rubber band is stretched to point B to make it 9cm long. Both rubber bands are pulled to make a sound. How do the pitches compare?
The red rubber band has a higher pitch.
Which has a higher pitch - a short rubber band or a long rubber band?
long rubber band
When you pluck a rubber band, it makes a sound. What can you do to make the sound softer?
Loosen the band so it is shorter.
Why should you write down you observations in an investigation?
To have good records of your observations.
Wile E Coyote is standing in front of a spring. If he squeezes his spring to half its length, what effect would it have on his energy?
His potential energy would increase.
You throw a ball straight up into the air. What type of energy does the ball have just before it comes down?
Potential energy
Ernesto cooks lasagna in a GAS oven. What form of energy heats the lasagna?
Heat energy
Tyrone is studying energy of motion. He has a spring in position A. He compresses the spring by pulling it tighter to position B. Would the ball travel farther from position A or position B and why?
The ball will travel farther from position B because it has more potential energy.
Constance and Romeo are using a spring to send balls into the air. Constance's ball travels 15m. Romeo squeezes the spring until it is shorter than Constance's spring. Will Romeo's ball travel a shorter or longer distance than Constance's?
Longer distance
