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WorksheetsElectromagnet Forces & Electricity
Total questions: 39
Worksheet time: 36mins
Name
Class
Date
1.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
2.
Earth's magnetic field and a bar magnet attract particles to the same locations. Where are they?
a)
The middle
b)
All around the outside
c)
The north and south poles
d)
First to the middle, then to the ends
3.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
4.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
s
nickel
nickel
5.
This substance is
a)
magnetized
b)
unmagnetized
6.
You know this substance is magnetized because
a)
all the domains have right angles
b)
the arrows are drawn in red
c)
the domains are aligned
d)
the domains are random
7.
This is an example of a
a)
temporary magnet
b)
permanent magnet
c)
an ion
d)
an isotope
8.
If an electric charge is NOT moving, then what type of magnetic field is created.
a)
A weak magnetic field
b)
A strong magnetic field
c)
No magnetic field (the charge has to be moving)
d)
There is no relationship between electricity and magnetic field
9.
The strength of a electromagnet can be changed by
a)
adding less loops to the coil.
b)
adding more loops to the coil.
10.
An example of the best insulator is
a)
copper
b)
salt
c)
plastic
d)
sand
11.
An example of a good conductor is
a)
copper
b)
sand
c)
plastic
12.
__________________ is the movement of electrons.
a)
Magnetism
b)
Electricity
c)
Electromagnetism
13.
Electromagnets are strong magnets that can be turned on and off.
a)
True
b)
False
14.
An electric current flows through a continuous loop is known as a ____________.
a)
Circuit
b)
Switch
15.
Why does opening a switch in an electric circuit stop the flow of current?
a)
Charges can't flow through a broken path.
b)
The magnetic domain is interrupted.
c)
The magnetic field disappears.
16.
Which of the following best describes this picture?
a)
Pipes and stuff
b)
Magnet
c)
Electromagnet
d)
Resistor
17.
The ends of a magnet are called
a)
magnetic poles
b)
north
c)
south
d)
magnetic opposites
18.
A north and a south pole will ______ when put together
a)
attract
b)
repel
c)
chat
d)
do nothing
19.
The area of magnetic force around a magnet is known as its
a)
magnet
b)
magnetic area
c)
magnetism
d)
magnetic field
20.
All electric currents produces a magnetic field
a)
True
b)
False
21.
The buildup of charges on an object is called
a)
Static Electricity
b)
Magnetism
c)
Power
d)
Volts
22.
The ability for heat or electricity to flow through an object is...
a)
conductivity
b)
magnetism
c)
electricity
d)
gravity
23.
Copper, aluminum, bronze, steel and gold are all examples of...
a)
Circuits
b)
Insulators
c)
Conductors
d)
Resistors
24.
A form of energy produced when electrons move from one place to another.
a)
Gravity
b)
Electricity
c)
Heat
d)
Solar
25.
A material that does not allow heat or electricity to flow through it.
a)
Conductor
b)
Water
c)
Insulator
d)
Wire
26.
What type of circuit is shown in the picture?
a)
Parallel
b)
Series
c)
Closed
d)
Open
27.
electricity is due to the movement of _________
a)
electrons
b)
protons
c)
neutrons
d)
atoms
28.
What do you call a battery or other device which provides energy for a circuit?
a)
Electricity
b)
Power source
c)
Open circuit
d)
Closed circuit
29.
In the image, which of the person and their bikes will get down a hill faster?
a)
The boy because he is younger
b)
The woman because she is stronger
c)
The boy because he has a greater mass which applies a greater force
d)
The woman because she has more mass and applies a greater force
30.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
31.
What is any PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
32.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
33.
If these boys are pulling with the same amount of force. What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
34.
What is the standard unit force is measured in?
a)
Newtons
b)
pounds
c)
grams
d)
meters
35.
Which law is represented by this graphic?
a)
1st Newton's Law
b)
2nd Newton's Law
c)
3rd Newton's Law
36.
Which law is represented by this graphic?
a)
1st Newton's Law
b)
2nd Newton's Law
c)
3rd Newton's Law
37.
Which law is represented by this graphic?
a)
1st Newton's Law
b)
2nd Newton's Law
c)
3rd Newton's Law
38.
Which law is represented by this graphic?
a)
1st Newton's Law
b)
2nd Newton's Law
c)
3rd Newton's Law
39.
Object at rest stays at rest.
a)
1st Newton's Law
b)
2nd Newton's Law
c)
3rd Newton's Law
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