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WorksheetsMagnetism and Gravity Review
Total questions: 52
Worksheet time: 44mins
Name
Class
Date
1.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
2.
If you place the North pole of a magnet next to the South pole of another magnet, they will:
a)
Attract
b)
Repel
c)
Do nothing
d)
Shatter
3.
What is responsible for the Magnetic Field around Earth?
a)
The Earth's crust
b)
The Earth's molton iron core
c)
The Earth's mantel
d)
The Sun
4.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
5.
A coil of wire acts like a magnet when __________________ flows through it.
a)
water
b)
electrical current
c)
ocean current
d)
food
6.
This is called an __________________.
a)
bomb
b)
circuit
c)
electromagnet
d)
coil
7.
You can make an electromagnet stronger by: using __________________ coils of wire
a)
bigger
b)
smaller
c)
more
d)
less
8.
You can make an electromagnet stronger by: having a __________________ current in the wire
a)
smaller
b)
stronger
c)
greener
d)
water
9.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
10.
On Earth, where is Magnetic North approximately located?
a)
The Equator
b)
The North Pole
c)
The South Pole
d)
New Brighton
11.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
12.
If you cut a magnet in half, what happens to the poles?
a)
One half gets the North Pole, the other half gets the South Pole
b)
Both halves get only a North Pole
c)
Both halves get only a South Pole
d)
Both halves get a North pole and a South Pole
13.
Magnets can attract or __________________ other magents
a)
keep
b)
react
c)
repel
d)
destroy
14.
If you put a __________________ pole and a south pole together, they attract.
a)
North
b)
South
c)
Positive
d)
Magnetic
15.
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
16.
True or False: All metals stick to magnets.
a)
True
b)
False
17.
How is Earth's magnetic field similar to that of a magnet?
a)
It's shaped like a horseshoe.
b)
It has north and south poles.
c)
It is made plastic.
d)
It is hundreds of miles long.
18.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
19.
Where is Earth's magnetic field strongest?
a)
Along the outside lines
b)
Along the inside lines on either side
c)
Where the lines are close together at the poles
d)
In the space outside of the lines
20.
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
21.
Which of the following is shown in the picture?
a)
Electromagnet
b)
Electric generator
c)
Electric motor
d)
Transformer
22.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
23.
This substance is
a)
magnetizecd
b)
unmagnetized
c)
positively charged
d)
negatively charged
24.
This is an example of magnets...
a)
attracting to each other.
b)
repelling each other.
25.
This is an example of...
a)
attraction
b)
repulsion
26.
The region around a magnet in which magnetic forces act is
a)
magnetic field
b)
magnetic force
c)
electromagnet
d)
ferromagnet
27.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
28.
Which of the following is true of a bar magnet?
a)
Its magnetic field is strongest near its center.
b)
It is surrounded by a magnetic field.
c)
The north pole is stronger than the south pole.
d)
The south pole is stronger than the north pole.
29.
The planet earth is a giant magnet?
a)
True
b)
False
30.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
31.
What are the two metals that make up the Earth's core?
a)
Iron and Nickel
b)
Iron and Cobalt
c)
Cobalt and Nickel
d)
Iron and Copper
32.
What happens when you drop a magnet?
a)
It never can become a magnet again.
b)
The domains unalign
c)
The domains align
d)
Nothing!
33.
Which is true about the image compared to Earth's magnetic field?
a)
Both are on their side
b)
The magnetic field comes from the poles
34.
In order for an object to become magnetic, its electrons must ______.
a)
Move in random order
b)
Rotate in the generally opposite directions
c)
Go to opposite sides of the object
d)
Rotate in generally the same direction
35.
The magnetic field of an electromagnet ______.
a)
Can be turned on and off.
b)
Is permanent.
c)
Lasts for only one hour.
d)
Lasts for one day.
36.
Increasing the # of loops in a solenoid will cause the strength its magnetic field to __________
a)
decrease
b)
increase
37.
A compass behaves as it does because the _________ acts as a giant magnet.
a)
sun
b)
moon
c)
earth
d)
astroid belt
38.
Magnetic poles that are unlike......
a)
attract each other.
b)
repel each other.
c)
do not interact.
d)
point in the same direction.
39.
Every magnet, regardless of its shape, has two.....
a)
magnetic poles.
b)
magnetic fields.
c)
magnetic charges
d)
magnetic needles
40.
What is an electromagnet?
a)
a magnet that creates an electric current
b)
a magnet created by an electric current
c)
a magnet that has an electric charge
d)
an electric charge that is magnetic
41.
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
42.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
43.
Who Is This?
a)
Ms. Solano
b)
Ms. Clark
c)
the Mr. Hicks
d)
Mr. Olson
44.
Who lives in a Pineapple Under the Sea?
a)
Patrick
b)
Dory
c)
Nemo
d)
SpongeBob Squarepants
45.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
46.
As distance between two objects increase the pull of gravity
a)
Increases
b)
Decreases
c)
Stays the same
47.
The amount of matter in an object is
a)
pressure
b)
weight
c)
mass
d)
force
48.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
49.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
50.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance
b)
mass and matter
c)
distance and weight
d)
weight and mass
51.
A person would weigh more on Jupiter than on the Earth because---
a)
Jupiter has less mass, and therefore less gravity
b)
Jupiter has more mass, and therefore less gravity.
c)
Jupiter has less mass, and therefore more gravity.
d)
Jupiter has more mass, and therefore more gravity
52.
__________holds all of the planets in orbit around the sun.
a)
Force
b)
Motion
c)
Weight
d)
Gravity
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