WorksheetsElectricity by Ms. Hollabaugh
Total questions: 16
Worksheet time: 16mins
A student tested the items below to see if they stopped the conduction of electricity. Paper and a toothpick stopped the flow of electricity. Penny, metal clip, and a nail let the energy flow.
What is the best claim she can make from this evidence?
Wood is an insulator.
Nails are insulators.
Toothpicks are conductors.
Metal is an insulator.
A student put a beaker of water on top of the hot plate.
She turned on the hot plate (a portable burner used for cooking) and the water started boiling.
What most likely happened to explain this?
Electric energy changed to heat energy.
Heat energy changed to water energy.
Electric energy changed to gas energy.
Heat energy changed to a gas energy.
A student used a paper clip to complete the circuit. The bulb lit up. What is the best claim that can be made from this evidence?
The paper clip is an insulator.
The paper clip is a conductor.
The paper clip pushes the electric current.
The paper clip changes electric energy into light energy.
When a switch in a circuit is turned on, the light bulb lights.
It completed the circuit which allowed the electric current to flow.
It completed the circuit which allowed light energy to reach the bulb.
The switch pushed the electric current to the light bulb.
The switch changed electric energy into light energy.
Katie drew the model above to show how a magnet attracts nails. Why did she most likely draw the nails where she did?
Magnets are stronger in the middle.
Magnets are stronger at the poles.
Magnets repel nails in the middle.
Magnets repel nails at the poles.
Which one of the devices below can transform electric energy into light and sound energy?
A fan
A computer
A battery
An iron
A student tested several different items to see if they conducted electricity. Which item could be used to complete an electric circuit?
rubber band
screw
board
plastic straw
Sam felt hot one summer day. He plugged in a fan and turned it on. The fan blew the air and cooled him off.
How did the fan make the air move?
Heat energy transformed into cool energy.
Heat energy transformed into wind energy.
Electric energy transformed into energy of motion.
Electric energy transformed into cool energy.
A student wants to make the electromagnet she made STRONGER. Which of the following is most likely to make it stronger?
Use a longer wire.
Remove the nail.
Add another battery
Use a shorter wire.
A student tested the strength of several electromagnets. Which one is more likely the strongest?
One battery, 10 turns
Three batteries, 10 turns
Two batteries, 20 turns
Three batteries, 20 turns
A student wants to find out how the type of core affects the strength of an electromagnet. Her procedure is shown below.
1.) Make two electromagnets
2.) One electromagnet will have 2 batteries and an iron core.
3.) The other one will have 1 battery and a plastic core.
4.) Test the strength of the electromagnets by picking up paper clips.
Is this a fair test?
No, because there is no responding variable.
No, because there are too many manipulated variables.
Yes, because there is a responding variable.
Yes, because there are two manipulated variables.
A student measured the strength of four electromagnets with different cores. Below are the results.
No Core - Picked up 1 paper clip
Iron Core- Picked up 4 paper clips
Plastic Core- Picked up 1 paper clip
Glass Core- Picked up 1 paper clip
What is the best claim that can be made from this evidence?
Glass attracts paper clips.
Plastic attracts paper clips.
Iron cores make electromagnets stronger.
Plastic cores make electromagnets stronger.
Jim drew a picture to represent a device he built.
A battery with a wire coil wrapped around a steel nail with paper clips hanging from the steel nail.
Why did he most likely include the paper clips in his drawings?
To show that it is an electromagnet.
To show that is makes electricity.
To show that it creates energy.
To show that it makes heat.
What is the most important purpose of a switch?
To conduct the electric current.
To open and close the circuit.
To push the current through the circuit.
To change electric energy into light energy.
Sally wants to test the effects of adding more batteries on the strength of an electromagnet. She makes an elecromagnet by wrapping a wire about three nails. She will measure the strength by counting the number of paper clips it will pick up. What should she use as her manipulated variable?
Number of paper clips picked up.
Number of batteries.
Number of coils.
Number of nails in the core.
A student measured the strength of four electromagnets with different cores. Here are the results:
No core 1 paperclip
Iron core 4 paperclips
Plastic core 1 paperclip
Glass core 1 paperclip
What is the BEST claim that can be made from the evidence?
Glass attracts paper clips.
Plastic attracts paper clips.
Iron cores make the electromagnet stronger.
Plastic cores make the electromagnet stronger.
