WorksheetsFormative Assessment 3 (Uses of magnets)
Total questions: 20
Worksheet time: 20mins
The ends of a bar magnet are called _____.
poles
gears
pulleys
forces
A boy accidentally knocks items off of his desk. He uses a magnet to pick up some of the items. Which item can he pick up with a magnet?
a pencil
a paperclip
an eraser
crayons
A girl found a box containing 2 magnets. One magnet has the north and south poles labeled. How can she identify the poles on the other magnet?
stick both magnets together
stick both magnets to a refrigerator
check to see if aluminum foil sticks to both magnets
check to see if paperclips stick to both magnets
What happens when the OPPOSITE poles of two magnets come near each other?
The magnets push away (repel).
The magnets pull together (attract).
The magnets get bigger.
The magnets disappear.
What happens when two magnets repel each other?
Their magnetic field gets bigger.
They come closer together.
They push away from each other.
They point to the North Pole.
What kind of objects will a magnet attract?
plastic objects
lead objects
aluminum objects
iron objects
What is a magnet
A magnet is that can conduct electricity
A magnet is an object that can attract a substance
A magnet is a substance that electricity can not pass through
What is magnetic force
The force of energy
The property of a magnet to attract
The force of attraction exerted by the magnet on these substance
A type of magnet that has temporary magnetic effect when electric current flows through it.
This refer to
Electric
Electronic
Electrostatic
Electromagnet
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 provides the pathway to carry electricity from component to component?
battery
wire
switch
iron nail
Which component provides the energy or the power source to run the electromagnet?
Iron nail
wire
Switch
Battery
Princess made an electromagnet with one battery and wrapped a copper wire 30 times while Megan made and electromagnet with one battery and wrapped a copper wire 50 times. Which electromagnet is stronger?
Megan
Princess
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
Are the magnetic field lines in the picture correct?
Yes, because they point from north to south.
No, because they point from north to south (they're supposed to go the other way).
Yes, because the North pole is on the left in all pictures.
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
Choose the objects that use magnets.
How is magnet used in the picture?
hold objects
show direction
lift heavy objects made of metal
