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y4 final revision

Total questions: 92

Worksheet time: 3hrs 58mins

Name
Class
Date
1.

Gravity pushes you down to the earth.

a)

True

b)

False

2.

What makes objects fall to the earth?

a)

Gravity

b)

wind

c)

force

d)

Air pressure

3.

It is the pull of gravity on matter?

a)

matter

b)

volume

c)

weight

d)

viscosity

4.

Which force is used to move this? (falling leaves)

a)

magnet

b)

gravity

c)

moving water

d)

electricity

5.

You are pulled to the surface of the earth due to the force of _________________

a)

gravity

b)

friction

c)

normal force

d)

contact force

6.

If a ball and a piece of paper are dropped from the same height they will

a)

Hit the ground at the same time because of gravity

b)

Hit the ground at different times because of gravity

c)

Hit the ground at different times because of friction

d)

Hit the ground at different times because of air resistance

7.

A book sitting on a desk has....

a)

Balanced forces acting on it

b)

Unbalanced forces acting on it

c)

No forces acting on it

d)

All forces acting on it

8.

What can make an object start moving, stop moving or change direction?

a)

Gravity

b)

Work

c)

Force

d)

Inertia

9.

A football player kicks a ball into the air. It falls to the ground, rolls then stops. What two forces cause the ball to stop?

a)

Gravity and Friction

b)

Force and Friction

c)

Force and Motion

d)

Force and Gravity

10.
Melissa and Gabe were testing the flight of leaves as they tossed them in the air.  The leaves would go up and then came to a rest on the ground.  What force made the leaves land on the ground?
a)
gravity
b)
friction
c)
air pressure
d)
mass
11.

Which best describes the force of gravity?

a)

a puling force

b)

a pushing force

c)

change in mass

d)

change in speed

12.

A ball was rolling fast and then slowed. Which most likelycaused the ball to slow?

a)

heat

b)

friction

c)

momentum

d)

wind

13.

Which best explains why a bicycle slows down when it brakes are applied?

a)

The brakes heat the rubber on the bicycle tires

b)

the brakes add energy to the bicycle

c)

the brakes cause frictional forces on the wheels of the bicycle

d)

the brakes increase the force of gravity on the bicycle

14.

a cup sitting on the table has what type of force?

a)

unbalanced force

b)

gravity only

c)

friction

d)

balanced force

15.

magnets move because of what type of force?

a)

friction

b)

gravity

c)

motion

d)

magnetism

16.

Force that opposes the motion of any object

a)

inertia

b)

unbalanced force

c)

friction

d)

balanced force

17.
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
18.
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
19.
A north pole and a south pole will attract.
a)
True
b)
False
20.

What material is attracted to a magnet?

a)

Silver

b)

Water

c)

Metal

d)

Iron

21.
What happens when two items repel each other?
a)
They push together.
b)
They point to the North Pole.
c)
They should push apart.
d)
Their magnetic field gets bigger.
22.
What items will a magnet attract?
a)
Beach ball, glass
b)
nails, paper clip
c)
book, paper
d)
golf ball, glue
23.
Magnets have a north and south______.
a)
Pole
b)
Shape
c)
Color
24.
What happens when the opposite poles of 2 magnets come close together?
a)
They push away.
b)
They get bigger.
c)
They pull together.
d)
They disappear.
25.
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.
26.
In this image, matching north poles from two magnets are introduced.  What do you predict will be the outcome?
a)
There will be no interaction.  The poles of magnets do not have an effect on one another.
b)
The two north poles will attract each other
c)
The two north poles will repel each other
d)
The two magnets will combine and become one magnet
27.
Which object is non-magnetic?
a)
paperclip
b)
staple
c)
steel nail
d)
toothpick
28.
Where is the magnetic force the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
29.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
30.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
31.

A compass behaves as it does because each needle acts as a(n) ___________.

a)

Magnet

b)

Guide

32.

The area of force around a magnet is called?

a)

Magnetic Field

b)

Area of Affect (AOE)

c)

Lines of Influence

33.

Three magnets are used in an experiment to pick up paperclips. Magnet 1 picks up 5 paperclips and Magnets 2 and 3 pick up 8 paperclips each. What is a logical deduction from this experiment.

a)

Magnet 1 is the largest magnet

b)

Magnet 1 is the smallest magnet

c)

Magnets 2 and 3 are smaller and less powerful than magnet 1

34.

A push or pull that can change the motion of an object is the definition of the word

a)

energy.

b)

power.

c)

force.

d)

magnetism.

35.

Friction makes objects ______.

a)

speed up or fly

b)

slow down or break

c)

slow down or stop

d)

speed up or overheat

36.

More friction is caused by rubbing between two objects that are ____.

a)

hard

b)

soft

c)

smooth

d)

rough

37.

A force can cause an object to change _____.

a)

gravity

b)

direction

c)

friction

d)

color

38.

Maglev trains float on a cushion of air, eliminating .

a)

position

b)

motion

c)

friction

d)

none of the above

39.

What kind of objects will a magnet attract?

a)

plastic objects

b)

lead objects

c)

aluminum objects

d)

iron objects

40.

What does MAGLEV stand for?

a)

Magnetic Levitation

b)

Moving Awesome Gravity Levitation Elemental Vacuum

c)

Magic Levels

d)

None of the above

41.

What is the main component that allows maglev trains to float above the tracks?

a)

Magnetic field

b)

Air cushion

c)

Water pressure

d)

Hydraulic lift

42.

____ is the only natural satellite of earth.

a)

Star

b)

Venus

c)

Moon

43.

Name the force of flight shown by the arrow.

a)

lift

b)

thrust

c)

drag

d)

weight

44.

Name the force of flight shown by the arrow.

a)

life

b)

thrust

c)

drag

d)

weight

45.

Name the force of flight shown by the arrow.

a)

lift

b)

thrust

c)

drag

d)

weight

46.

Name the force of flight shown by the arrow.

a)

lift

b)

thrust

c)

drag

d)

weight

47.

Forces that are equal are called ___________________ forces.  This occurs when an aircraft is soaring, or cruising. 

a)

balanced

b)

unbalanced

48.

Forces that are NOT equal are called _____________________ forces.  This occurs during take off and landing.

a)

balanced

b)

unbalanced

49.

______________ is an upward pull on an aircraft.

a)

lift

b)

thrust

c)

drag

d)

weight

50.

Which forces must be increased to cause an airplane to TAKE OFF?

a)

lift and thrust

b)

lift and weight

c)

drag and thrust

d)

drag and weight

51.

The four forces that enable flight are:

a)

drag, lift, thrust, gravity

b)

lift, drag, winglet, aileron

c)

thrust, drag, gravity, mass

d)

gravity, lateral, thrust, drag

52.
In order to move forward, you must have more  thrust than _______ to fly.
a)
Thrust
b)
Lift
c)
Drag
d)
Gravity
53.

This is the name of the force that tries to push an aircraft up.

a)

Thrust

b)

Gravity

c)

Drag

d)

Lift

54.

This is the name of the force that tries to hold an aircraft back.

a)

Thrust

b)

Gravity

c)

Drag

d)

Lift

55.

This is the name of the force that tries to pull an aircraft down.

a)

Thrust

b)

Gravity

c)

Drag

d)

Lift

56.

This is the name of the force that tries to move an aircraft forward.

a)

Thrust

b)

Gravity

c)

Drag

d)

Lift

57.
What do parachutes rely on to fall to the ground more slowly?
a)
Lift
b)
Drag
c)
Thrust
d)
Lift
58.

Which car is the fastest ?

a)
b)
c)
d)
59.

Which vehicle has low speed ?

a)
b)
c)
d)
60.

If the following objects were dropped from the same height, which one would hit the floor first?

a)
b)
c)
61.

This photo represents...

a)

Air resistance

b)

water resistance

c)

friction force between 2 solid bodies

62.

Dolphins have streamline shape to.............

a)

increase water resistance.

b)

Decrease water resistance.

c)

No answer

63.

Which boy A or B will slide down faster

a)

A

b)

B

c)

A and B

64.

A hard wood floor has more friction than a carpet.

a)

true

b)

false

65.

Thrust has to be -------------- than gravity in order for the rocket to fly.

a)

Greater

b)

Less

c)

The same

66.

Drag and thrust happen in:

a)

The same direction

b)

Opposite directions

67.

Things float on water because of -----------

a)

Gravity

b)

upthrust

c)

Friction

68.

Which force or forces create a downward pull?

a)

lift

b)

gravity

c)

drag

d)

upthrust

e)

thrust

69.

Which force or forces create an upward push?

a)

gravity

b)

buoyancy

c)

drag

d)

thrust

e)

lift

70.

Which force or forces could help a parachute safely land?

a)

lift

b)

thrust

c)

upthrust

d)

drag

e)

gravity

71.

Which of these materials will a magnet attract?

a)

paper

b)

iron

c)

copper

d)

wood

72.

Brass is an alloy made of-------------which is non magnetic material

a)

copper and zinc

b)

copper and tin

c)

copper and nickel

d)

copper and aluminum

73.

Alloy that can be used for jewellery, machine bearings, and door furniture

a)

brass

b)

bronze

c)

pewter

d)

duralumin

74.

A fair test can be created using what 3 steps? (Choose 3)

a)

Change one thing

b)

Measure something

c)

Keep everything else the same

d)

Wear a scientist's coat

75.

During an experiment to test plant growth, which factor should be kept constant to ensure a fair test?

a)

Amount of sunlight

b)

Type of soil

c)

Amount of water

d)

All of the above

76.

Another name for air resistance is...

a)

upthrust

b)

Streamline

c)

Gravity

d)

Drag

77.

The larger the surface area of the moving object, the ___________ air resistance there is.

a)

Less

b)

More

c)

Longer

d)

Quicker

78.

Air resistance pushes against falling

objects and __________________.

a)

Speeds them up

b)

Keeps them afloat

c)

Slows them down

d)

Spins them

79.

The larger the parachute the ____________

a)

Less air resistance

b)

More surface tension

c)

Less drag

d)

More drag

80.

Which has more air resistance?

a)
b)
81.

The more streamlined an object is, the...

a)

More air resistance

b)

Less air resistance

c)

Slower air resistance

d)

Faster air resistance

82.

 a force which is applied to an object by a person or another object

a)

force

b)

inertia

c)

friction

d)

applied force

83.

A push or pull exerted on an object

a)

force

b)

inertia

c)

friction

d)

applied force

84.

force perpendicular to a surface that prevents an object from moving through the surface. It matches the amount of force the object pushes on the surface.

a)

weight

b)

tension

c)

normal force

d)

applied force

85.

1. What are forces measured in?

a)

Kilograms

b)

Newtons

c)

Grams

d)

Meters

86.

What is gravity?

a)

A force

b)

A push

c)

A pull

d)

An apple

87.
Look at the picture.  Is the force of gravity on the boy a push or a pull? 
a)
Pull
b)
Push
88.
An object with mass has gravity.
a)
True
b)
False 
89.
A person would weigh less on the moon than on the Earth because...
a)
the moon has less mass, and therefore less gravity
b)
the moon has more mass, and therefore less gravity
c)
the moon has less mass, and therefore more gravity
d)
the moon has more mass, and therefor more gravity
90.

To measure forces, we use ...

a)

forcemeter

b)

measuring tape

c)

scale

91.

Force are measured in the unit of ....

a)

Newton

b)

meter

c)

kilogram

92.

What is the forcemeter to pull up?

a)

20 Newton

b)

40 Newton

c)

50 Newton

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