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WorksheetsCSHS Year 7 Physics ETT Revision
Total questions: 69
Worksheet time: 40mins
Name
Class
Date
1.
Forces are a...
a)
Push, Pull or Twist
b)
Push and Pull
c)
Push
d)
Moving object
2.
The standard international unit for force is...
a)
Mass
b)
Kg
c)
SI
d)
N
3.
What is the difference between a contact and non-contact force?
a)
Contact forces involve objects that touch whereas non-contact forces do not require touch
b)
Non-contact forces involve objects that touch whereas contact forces do not require touch
4.
Which is an example of a contact force?
a)
Gravity
b)
Magnetism
c)
Friction
d)
Kinetic Energy
5.
Which is an example of an unbalanced force?
a)
A car moving 3N forward
b)
A car travelling at a constant speed
c)
A car that is parked on the side of the road
d)
A car speeding up from 60km to 80km
6.
A book sits on a table. Which of the following sentences is true?
a)
The forces acting on the book are balanced
b)
The forces acting on the book are unbalanced
c)
The only force acting on the book is gravity
d)
The forces acting on the book are approximately 3N
7.
Which of the following is true about the image shown?
a)
The net force is 6N to the right
b)
The net force is 3N to the right
c)
The net force is 6N to the left
d)
The net force is 3N to the left
8.
You are an astronaut travelling to the moon. Will your mass be different on earth compared to the moon?
a)
Yes
b)
No
9.
You are an astronaut travelling to the moon. Will your weight be different on earth compared to the moon?
a)
Yes
b)
No
10.
Gravity affects mass, but gravity does not affect weight.
a)
True
b)
False
11.
P1.18: Are forces balanced or unbalanced when skateboarding down a ramp?
a)
Balanced
b)
Unbalanced
12.
P1.1: What is it called when the force of gravity is acting on an object?
a)
Weight
b)
Sliding Friction
c)
Momentum
d)
Projectile Motion
13.
P1.5: In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?
a)
They don't; they hit the ground at the same time.
b)
One is more dense than the other.
c)
One is heavier than the other.
d)
Air resistance
14.
P1.3: Is this a contact or non-contact force?
a)
Contact
b)
Non-contact
15.
P1.3: Gravity holds the planets in place. Is it a contact or non-contact force?
a)
Contact
b)
Non-contact
16.
P1.9: What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
17.
P1.10: How can the amount of friction be reduced? (pick 2)
a)
Make the surface smoother
b)
Make the surface rougher
c)
Add a lubricant
d)
Make it smaller
18.
Wheels on a skateboard most likely experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
19.
Sally experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
20.
Wheels of a shopping cart experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
21.
Swimming fish experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
22.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
23.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
24.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
25.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
26.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
27.
On which surface will a toy car travel the furthest?
a)
Carpet
b)
Polished Wood
c)
Ice
28.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
29.
As distance between two objects increase the pull of gravity
a)
Increases
b)
Decreases
c)
Stays the same
30.
The amount of matter in an object is
a)
pressure
b)
weight
c)
mass
d)
force
31.
Every object in the universe attracts every other object.
a)
True
b)
False
32.
If Earth's mass was cut in half, what would happen to your weight?
a)
Increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, weight is not affected by gravitational force
33.
A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate
a)
air resistance
b)
surface area
c)
descent velocity
d)
gravity
34.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
35.
Magnets can attract or __________________ other magents
a)
keep
b)
react
c)
repel
d)
destroy
36.
If you put a __________________ pole and a south pole together, they attract.
a)
North
b)
South
c)
Positive
d)
Magnetic
37.
You can make an electromagnet stronger by: using __________________ coils of wire
a)
bigger
b)
smaller
c)
more
d)
less
38.
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
39.
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
40.
This large crane magnet functions only when the electrical current is ON. The crane magnet is an example of what type of magnet?
a)
NIB Magnet
b)
Ceramic Magnet
c)
Electromagnet
d)
funnel magnet
41.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
42.
Where is the strongest attraction force of the magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
43.
Which two metals will be attracted by a magnet?
a)
iron and steel
b)
gold and silver
c)
aluminum and lead
d)
copper and cobalt
44.
The space around a magnet where the force of a magnet can attract best is called__________
a)
magnetism
b)
bar magnet
c)
horseshoe magnet
d)
magnetic field
45.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
46.
A simple electromagnet can be made with which of the following?
a)
an electric current
b)
a turbine and nail
c)
a nail, a wire, and a battery
d)
a compass and a battery
47.
How can the strength of an electromagnet be increased?
a)
by rubbing it with a stronger magnet
b)
by increasing the coils of wire around the iron
c)
by increasing the length of the wire from the battery
d)
by loosening the coil of wire around the iron
48.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
49.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
50.
An inclined plane wrapped around a rod forms this simple machine
a)
lever
b)
pulley
c)
screw
d)
wedge
51.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum
52.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
53.
A seesaw is an example of a
a)
wedge
b)
lever
c)
inclined plane
d)
pulley
54.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
55.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
56.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
57.
The fixed point on the lever is called
a)
load
b)
resistance
c)
bar
d)
fulcrum
58.
The device used to raise a flag up a flag pole is an example of a
a)
wheel and axle
b)
lever
c)
inclined plane
d)
pulley
59.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
60.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
61.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
62.
3. Which type of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
63.
6. What kind of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
64.
How many types of levers are there?
a)
1
b)
2
c)
3
d)
4
65.
A wheelbarrow is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
66.
If you want to decrease the effort force when using a lever, where will you move the fulcrum?
a)
Closer to the object you want to move
b)
Farther away from the object you want to move
c)
You don't move the fulcrum, you move the effort force
d)
None of these answers
67.
This is the amount of times a machine multiplies the effort force used.
a)
Density
b)
Resistance Force
c)
Mechanical Advantage
d)
Centripetal Force
68.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1
b)
10
c)
100
d)
1000
69.
When you know the load force and the effort force, how can you calculate the mechanical advantage?
a)
Divide the load force by the effort force
b)
Divide the effort force by the load force
c)
Multiply the load force with the effort force
d)
Impossiiibrruuuuu
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