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WorksheetsScience Quarter 3 3rd Summative Test
Total questions: 20
Worksheet time: 12mins
What is an electromagnet?
a permanent magnet with a north and south pole
a temporary magnet made from current carrying wire around a magnetic metal core
Which of the following is NOT part of an electromagnet?
Toothpick
battery
Iron nail
wire
Which component provides the energy or the power source to run the electromagnet?
Iron nail
wire
Switch
Battery
Sophia made an electromagnet but it was very weak. How can she make it stronger?
take away the battery
wrap the wire loosely
use less copper wire
coiled more copper wire
What component becomes a temporary magnet when electricity is flowing through the circuit?
iron nail
copper wire
battery
switch
What component provides the pathway to carry electricity from component to component?
battery
wire
switch
iron nail
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
Remove all the coils and the nail.
Use a smaller battery.
Reverse the poles of the magnet.
Add more coils of wire to the nail.
How are electromagnets different from magnets?
magnets have a North and South pole
you can turn an electromagnet on/off
magnets are more powerful
Surrounding every magnet is a __________ __________.
another magnet
electrical current
magnetic field
What would increase the strength of an electromagnet?
Changing the direction of the current
Increased the amount of electricity that flows through the wire.
Inserting a wooden core inside the coil
Decreasing the number of coils of wire
You can make an electromagnet stronger by: having a __________________core inside the wire.
smaller core
larger core
greener core
water core
What is a permanent magnet?
Can be turned off
Can not be turned off
Can turned on and off
What are the components of the electromagnet?
copper wire, iron nail, and a wooden stick
copper wire, iron nail
copper wire, iron nail, and a battery
Copper wire, paper and a battery
Which of these is not used to create a simple electromagnet?
light bulb
copper wire
battery
iron nail
This is an object made from a battery, a nail and some wire. What will happen if you touch a metal paper clip to the nail?
The wires will melt.
The battery will spark.
The nail will give you a shock.
The paper clip will stick to the nail.
What is the role of the battery in the electromagnet?
It provides light energy for the electromagnet.
It provides magnetic field for the electromagnet.
It provides sound energy for the electromagnet.
It provides the power source for the electromagnet.
Why do you think the compass needle is moving when is near to electromagnet?
Because of the magnetic field generated in the wire.
Because of the electricity generated in the compass.
Which steps will you take to build an electromagnet?
First, wrap the wire around a nail. Next, attach the ends of the wire to a battery to make an electric circuit.
First, attach the ends of the wire to a battery to make an electric circuit. Next wrap the wire around a nail.
