WorksheetsFantastic Forces
Total questions: 64
Worksheet time: 48mins
A force:
is a measure of speed.
can cause a change in speed.
is measured in kilograms.
is measured in joules.
Which of the following is a contact force?
Magnetic force
Gravitational force
Electrostatic force
Frictional force
Select the correct statement about the re-entry of the space shuttle into the Earth’s atmosphere.
The shuttle slows down as it becomes heavier the closer it is to the surface.
Atmospheric drag (friction) slows down the shuttle.
Ceramic tiles have smooth surfaces so there is little friction.
The temperature of the wind rises and this slows the craft down.
Force is measured in units of:
kilograms (kg).
grams (g).
newtons (N).
kilojoules (kJ).
When you take in a deep breath and float on your back in a swimming pool, which of the following statements is correct?
The buoyancy force acting on you is much greater than your weight.
Your weight is much greater than the buoyancy force on you.
The buoyancy force is the same as your weight.
There is no buoyancy force acting on you.
If these teams are pulling with the same amount of force what will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
Both will fall down.
Gravity:
holds atoms together.
pulls energy towards matter.
pulls matter towards other matter.
pushes matter towards each other.
A balanced force causes:
no change to an object's motion.
changes an object's direction.
changes an object's speed.
changes an object's shape.
The force that slows a skydiver down when a parachute opens is:
air resistance.
gravity.
normal force.
a fist.
An electrostatic force can be created when two objects are rubbed together. The particles that move from one object to another are:
electrons.
protons.
neutrons.
atoms.
Like electrostatic charges:
repel each other.
attract each other.
twist each other.
pull each other.
Unlike electrostatic charges:
repel each other.
attract each other.
twist each other.
pull each other.
Lightning is caused by:
water and ice crystals rubbing against each other.
an angry Zeus.
large clouds.
electricity building up in the ground.
What is a force?
A change of position
A change of velocity
A change of shape
A push or a pull
What would happen if the forces on an object were balanced?
The object could not move.
The object would move faster or change direction.
The object would move slower but not change direction.
The object would stay at the same speed and direction.
Is the force of the Moon pulling on Earth smaller than, greater than, or the same as the force of Earth pulling on the Moon?
The force of the Moon pulling on Earth is greater.
The force of Earth pulling on the Moon is greater.
Both forces are the same.
Earth is pulling on the Moon, but the Moon isn't pulling on the Earth.
When dropped together, a 50 kg cannon ball lands at the same time as a 75 kg cannon ball. Which ball is experiencing the greater gravitational force?
50 kg cannon ball
75 kg cannon ball
They both experience the same force
There is insufficient information to decide
Which of the following is contact force?
Magnetic attraction
Weight
Electrostatic forces
Air resistance
How do bicycle helmets protect cyclists from injury?
The hard exterior of the helmet absorbs part of the force.
The soft polystyrene interior absorbs part of the force.
The bright colours make the cyclist more visible on the road.
Because the head area is larger when a helmet is worn, greater force is needed to cause damage.
On Earth, an astronaut in his suit weighs 72 kg. If the astronaut was standing on the Moon:
his mass and weight would be the same.
his mass and weight would be different.
his mass would decrease and his weight would be the same.
his mass would be the same and his weight would decrease.
What causes an electrostatic force?
Gravity
Objects becoming magnetised
Objects becoming electrically charged
Objects being rubbed together
Which force is slowing the race car down the most?
friction
gravity
air resistance
pull
Which force is slowing the drag car down?
gravity
pull
air resistance
push
Which TWO forces are at work here?
push and gravity
gravity and air resistance
friction and pull
push and air resistance
Forces can be described as
pushes
pulls
pushes or pulls
I don't know
Forces are measured in
Newtons
grams
metres
millilitres
What happens if forces are balanced?
The object will move left
The object will move right
The object will keep moving at the same speed in the same direction
The object will keep moving in the same direction but slow down
What happens if forces are unbalanced?
The object will changed direction, shape or speed
It will move left
It will move right
It will only slow down
Forces are represented using which shape?
squares
triangles
circles
arrows
When do we see friction?
when we pull something
when one surface slides over another
when we push something
when we lift something
Magnets have
a north pole
a south pole
a north and south pole
a west pole
Like magnetic poles will
repel
attract
stick
move
Unlike magnetic poles will
repel
attract
slide
stop
What is air resistance?
A type of force
A type of friction
A type of magnet
A type of truck
When we graph forces of different trials on different surfaces we use,
every answer
the averages of each surface
only the first trial
only the ones that prove the hypothesis
Which surface is likely to cause the least friction?
a rough surface
a smooth surface
a large surface
a small surface
What can we say about the forces of an object that is not moving?
there must only be one force acting on it
The forces must be balanced
the forces must be unbalanced
it must be very heavy
Matter is pulled to the ground by
space
gravity
air
soil
Gravity and friction are two types of
inertia
masses
speed
forces
What is the weight of an object if its mass is 74kg?
(HINT - weight = 10 x mass)
740 kg
74 N
735 N
740 N
What does gravity do?
pushes everything away from the ground
pulls everything down to the ground
Gravity is the same on every planet.
True
False
A stationary object remains stationary if the sum of the forces acting upon it equal
100N
50N
25N
0N
Unbalanced forces are when
both forces equal the same
both forces are 0N
one force is bigger than the other
Both forces are greater and equal to 100N
Friction can be increased by making surfaces
more rough
more smooth
bigger
smaller
Friction can be decreased by making surfaces
more rough
more smooth
bigger
smaller
Air resistance is a type of friction experienced by objects moving through
air
water
sand
time
Friction is caused by
fire
a box being left on a table.
a spring being released.
two surfaces being in contact with each other.
A force is ____.
a push or pull that can cause movement
a magnet
when someone does not work
A push is ____.
a force to move something away
a force to pull something towards you
when a magnet attracts metals
A pull is _____.
a force to move something towards you
a force to move something away
when a magnet attracts metals
This is an example of ____.
forces
gravity
magnetism
This is an example of what force?
pull
push
gravity
This is an example of what force?
push
pull
magnetism
Which of these best describes friction?
A rubbing force.
Something that is slippery.
Gravity.
Movement across a smooth surface.
Looking at the drawing. If you tried to move these 2 magnets closer together, what would you feel?
A Pushing force
A Pulling force
No Force
Let the Force be with YOU
