WorksheetsNoncontact force strength
Total questions: 19
Worksheet time: 25mins
What component becomes a temporary magnet when electricity is flowing through the circuit?
iron nail
copper wire
battery
switch
Why doe the compass needle move when the electricity flows through the coiled wire?
Because a magnetic field is not produced, which do not attract to the needle.
Because a magnetic field is produced, which attracts the compass needle.
Because the battery produced magnetic field.
What would happen if you took one end of the wire off the battery?
The nail will be a magnet.
The nail would no longer be a magnet
Nothing will happened.
The nail will heats up.
A magnetic field of a magnet gets_____________the further magnetic object moves away from the magnet
Positive
Negative
Stronger
Weaker
You noticed as you moved a bar magnet closer to your compass, it caused the compass needle to move more as you moved the magnet closer. What is the cause of this phenomenon?
There is no cause
The distance increased between the compass and magnet.
The distance decreased between the compass and magnet.
Two of these.
None of these.
You noticed as you moved a bar magnet closer to your compass, it caused the compass needle to move more as you moved the magnet closer. What is the mechanism of this phenomenon?
The electrical force field got stronger as the bar magnet got closer.
The magnetic force field got weaker as the bar magnet got closer.
The electrical force field got weaker as the bar magnet got closer.
None of these.
Jessica wanted to know if increasing how many times she rubbed a balloon on her hair would increase static electricity strength. According to the data table, what should be her conclusion?
There is not enough data to make a conclusion.
Static electricity strength does seem to increase with more rubs.
Static electricity seems to decrease with more rubs.
Static electricity is not affected by more rubs.
According to Jessica's data table, how many hairs would be standing up if she rubbed the balloon 24 times?
125
150
175
There is not enough information to determine this.
Alessandro created a simple motor. He wanted to know if increasing the number of magnets would make the motor spin faster. According to his graph, what should be his conclusion?
There is not enough information to make a conclusion.
Increasing the number of magnets does not increase motor speed.
Increasing the number of magnets does increase motor speed.
Increasing the number of magnets does not affect motor speed.
Alessandro created a simple motor. He wanted to know if increasing the number of magnets increased his motor speed. According to his graph, what is the relationship between the number of magnets and number of motor rotations?
With every magnet, the rotations increased about 15 rotations.
With every magnet, the rotations decreased by about 15 rotations.
With every magnet, the rotations increased by 1.
With every magnet, the rotations increased by 5.
What makes electromagnets stronger
Less wire loops
More wire loops
No battery
No electric field
Electric motors require a battery, a magnet, and a coil of wire to operate. What could I do to make an electric motor spin faster?
Add more magnets
Have fewer magnets
Have no battery included
Remove the coil
Another student wants to test the strength of electric fields. They charge a wand 20 times and bring it toward a pop can. Then they charge the wand 50 times and bring it toward the pop can. What produced the greatest static force?
charging it 20 times
charging it 50 times
Neither amount of charge
Twice the charge
What happens to a magnet’s ability to attract metal objects as the distance from the metal object is decreased (less distance)?
The ability to attract is weaker
The ability to attract is 1/2
The ability to attract is stronger
There is no ability to attract
Two students decide to conduct an experiment to measure the strength of magnetic fields. They want to determine how to make a magnetic field stronger and to see more magnetic force. They have the following materials to use:
Magnet, compass, balloon, charging wand, paper scraps.
Which Materials should they use?
The balloon and the paper scraps
The compass and a balloon
The magnet and a compass
The charging wand and a compass
Look at the picture of the electromagnet. What can we do to make this a stronger electromagnet?
Take off wire coils
Reduce battery strength
Add more battery coils
Add more wire coils
