WorksheetsForces and Interactions Test Review
Total questions: 58
Worksheet time: 2hrs 36mins
Name
Class
Date
1.
What factor affects both electricity and magnetic forces
a)
Distance
b)
Polarity
c)
Turns in a generator
d)
Alternating or direct current
2.
Electrical attraction and repulsion
a)
Gravity
b)
Electromagnets
c)
Geomagnets
d)
Magnetisim
e)
Electricity
3.
Flow of electrons through a circuit
a)
Gravity
b)
Electromagnets
c)
Geomagnets
d)
Magnetisim
e)
Electricity
4.
Magnet created using electrical current
a)
Gravity
b)
Electromagnets
c)
Geomagnets
d)
Magnetisim
e)
Electricity
5.
The attraction of objects towards each other due to mass
a)
Gravity
b)
Electromagnets
c)
Geomagnets
d)
Magnetisim
e)
Electricity
6.
Magnet created using electrical current
a)
Gravity
b)
Electromagnets
c)
Geomagnets
d)
Magnetisim
e)
Electricity
7.
______ is the amount of matter an object is made of.
a)
mass
b)
gravity
c)
speed
8.
Which force is the rubbing of one surface against another and causes a moving object to slow down?
a)
gravity
b)
mass
c)
friction
9.
The measure of the pull of gravity on an object is called ____.
a)
friction
b)
motion
c)
weight
10.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
11.
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
12.
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
13.
Which object would be attracted to a magnet?
a)
soda can
b)
plastic bag
c)
penny
d)
iron
14.
How could you observe an electric charge?
a)
rub an object against a battery
b)
rub an object against your shirt
c)
rub an object with a piece of fabric and hold it next to a strip of paper
d)
place an object next to a ballon
15.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
16.
As the distance between 2 objects increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
17.
Which of the following will not change in different gravitational fields?
a)
wieght
b)
force
c)
mass
d)
pounds
18.
Which of the following will change with different gravitational forces?
a)
mass
b)
amount of matter in an object
c)
weight
d)
kilograms
19.
What would happen to your weight if Earth's mass was cut in half?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
increase because gravitational force decreases
20.
A measure of gravitational force on an object.
a)
gravity
b)
weight
c)
mass
d)
kilograms
21.
A student was playing music on her new cell phone. The teacher explained that the phone was powered by a battery. The teacher then asked her to explain what was happening to the energy in her new phone. How could she best explain this to the class?
a)
Electric energy is transformed into sound energy.
b)
Light energy is transformed into sound energy.
c)
Sound energy is transformed into electric energy.
d)
Sound energy is transformed into electric energy.
22.
Will the light bulb light up if the switch remains open as shown?
a)
Yes, because the circuit will be complete.
b)
Yes, because the battery will push the electric current.
c)
No, because the electric circuit is not complete.
d)
No, because the battery will push the electric current.
23.
The circuit below lit the light bulb. What is the best claim we can make from this evidence?
a)
The metal key is an insulator.
b)
The metal key is a conductor.
c)
The wires are not conductors.
d)
The circuit is not complete.
24.
Jill finds that all of the electric cords in her school are covered in plastic. Why is it important to cover the electric cords with plastic?
a)
Plastic is an insulator.
b)
Plastic is a conductor.
c)
Plastic is strong.
d)
Plastic will melt.
25.
A student built four electromagnets with different cores. Everything else about the electromagnets was the same. Which of the following cores would make her electromagnet the strongest?
a)
iron
b)
nickel
c)
wood
d)
plastic
26.
What supplies the energy in an electric circuit?
a)
light bulb
b)
conductor
c)
wire
d)
battery
27.
The image on the right is a
a)
series circuit
b)
parallel circuit
c)
looks like the number 8
28.
The image on the left is a
a)
series circuit
b)
parallel circuit
c)
a weird circuit
29.
Which of these substances conducts electricity the best?
a)
wood
b)
brick
c)
copper
d)
plastic
30.
This instrument can be used to see if materials conduct electricity. Which of these groups contains items that could all conduct electricity to complete the circuit?
a)
rubber ball, plastic comb, nail
b)
paper clip, penny, screw
c)
cork, dollar bill, tweezers
d)
pencil, eraser, spoon
31.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
32.
When a switch is turned on, you close a circuit so that it is___________.
a)
incomplete
b)
inactive
c)
complete
d)
broken
33.
I am the path along which electricity travels.
a)
electric circuit
b)
conductor
c)
insulator
d)
fuse
34.
I am the crackle you hear when you touch a doorknob after rubbing your feet across a carpet.
a)
electric circuit
b)
electric discharge
c)
fuse
d)
conductor
35.
Copper is a good conductor of electricity.
a)
true
b)
false
36.
In an incomplete circuit, the light bulb would be lit.
a)
true
b)
false
37.
Protons have a negative charge and electrons have a positive charge.
a)
true
b)
false
38.
When electrons move through a circuit ____________ electricity is created.
a)
current
b)
electron
c)
solar
d)
static
39.
Electricity is ____________________.
a)
the movement of the sun
b)
the movement of electrons
c)
the movement of the moon
d)
the movement of air
40.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
41.
How is a permanent magnet DIFFERENT from a temporary magnet?
a)
A permanent magnet attracts materials made of iron.
b)
A permanent magnet has poles.
c)
A permanent magnet has a magnetic field.
d)
A permanent magnet keeps its magnetism for a long time.
42.
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
43.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
44.
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
45.
A refrigerator magnet is an example of a:
a)
magnetic material
b)
permanent magnet
c)
horseshoe magnet
d)
temporary magnet
46.
Magnets that push away from each other are said to _____.
a)
attract
b)
repel
c)
annoy
d)
newton
47.
Magnets cannot attract other magnets.
a)
True
b)
False
48.
All metal objects are magnetic.
a)
True
b)
False
49.
All magnets have _____ poles.
a)
1
b)
2
c)
3
d)
4
50.
When you put ring magnets on a pencil, the magnets stay apart from each other because
a)
magnets are too weak to stay together.
b)
material that makes up the magnets aren't magnetic.
c)
same poles of the magnets are facing each other.
d)
the pencil stops the force of the magnets.
51.
Which is NOT a use of magnets?
a)
Generating electricity
b)
Holding cabinet doors closed
c)
Sorting paper from plastic
d)
Storing information on computer hard drives.
52.
Amy used a magnet to hold one piece of paper on the refrigerator. Later, she tried to use the same magnet to hold a stack of four pieces of paper, and the magnet wouldn't stick to the fridge. Why did this happen?
a)
The magnet needs glue
b)
The magnet couldn't hold due to the thickness of the paper
c)
Paper repels magnets
d)
A magnet isn't attracted to the refrigerator.
53.
The two poles on a magnet are
a)
north and east
b)
north and west
c)
south and north
d)
south and west
54.
Most of the Universe is _____
a)
filled with planets
b)
filled with stars
c)
filled with gas and dust
d)
pretty empty
55.
In space you have the same mass as you do on Earth, but no _____
a)
microgravity
b)
weight
c)
density
d)
pressure
56.
In science, acceleration refers to
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
increasing speed only
57.
What is the acceleration rate of an object falling on Earth?
a)
9.8 m/s.
b)
9.8 m.
c)
9.8 m/s2.
d)
9.8 s.
58.
Heavier objects free fall faster than lighter objects.
a)
True
b)
False
100 %
