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WorksheetsYear 9 Physics - Forces
Total questions: 100
Worksheet time: 50mins
What is a force? Fill in the blank: Forces are ______ or ______. Forces always have a direction in which they act. We measure force in newtons (N).
pushes; pulls
heavy; light
fast; slow
strong; weak
Which of the following is an example of a force pushing an object away?
The magnet pulls the paper clip towards it.
The man pushes the trolley away from him.
The forces acting upon an object are balanced.
Gravity keeps us on the ground.
If the forces acting upon an object are balanced, there is a change in speed or movement.
True
False
If the forces acting upon an object are unbalanced, there is a change in speed or movement.
True
False
What can forces make objects do? Select all that apply:
Turn
Slow down
Change direction
Move
Go faster
Fill in the blank: Gravity is a force. It keeps us on the ______ and also determines the movement of the stars and planets.
ground
roof
clouds
water
The page number for Research / ICT is:
12
8
15
20
The page number for Numeracy is:
12
8
15
20
What is the page number for Peer assessment?
Page 12
Page 8
Page 15
Page 20
The page number for Homework is:
12
8
15
20
The page number for QER / PISA is:
45
12
27
33
The page number for Challenge is:
12
5
20
8
The page number for Practical(s) is:
12
45
78
23
The page number for Exam result is:
45
23
12
67
The page number for Topic review and targets is:
12
8
15
20
Force is a ______________________ or a ______________________.
push, pull
move, stop
light, sound
heat, cold
It is invisible but we can see its ______________________.
effects
color
shape
size
Forces are measured in ______________________.
Newtons
Joules
Watts
Meters
What can a force do? – A change in ______________________ or / and
speed
color
temperature
shape
What can a force do? – A change in ______________________ or / and
direction
color
temperature
size
What can a force do? – A change in ______________________.
shape
temperature
color
sound
Friction – this occurs when ______________________.
two surfaces rub against each other
objects float in water
air moves rapidly
light passes through glass
2 examples of good friction ______________________.
walking, writing
sliding, slipping
falling, dropping
skating, gliding
2 examples of bad friction ______________________.
wearing out shoes, engine parts wearing out
writing with a pen, reading a book
drinking water, eating food
watching TV, listening to music
Air resistance – this occurs when ______________________.
an object moves through air
an object is at rest
an object is heated
an object is underwater
It will usually try to __________ the object.
slow down
speed up
move
change
Gravity – this __________ smaller objects __________ to larger objects.
pulls, towards
pushes, away
moves, beside
throws, above
In this diagram, the forces are ________________
balanced
unbalanced
opposite
equal but not balanced
The overall force here is ___________ Newtons
0
5
10
15
Balanced and Unbalanced Forces The object will - stay still / accelerate / decelerate
stay still
move in a circle
vibrate rapidly
change color
If an object was moving to begin with, and the forces on it were balanced then the object will ____________________________
continue moving at the same speed
stop immediately
change direction suddenly
accelerate rapidly
In this diagram, the forces are ________________
unbalanced
balanced
equal
opposite
Consider this object:
The overall force here is ___________ Newtons ___________
300, to the right
300, to the left
150, to the right
150, to the left
What happens to the length of the springs as you add masses?
The length of the springs increases.
The length of the springs decreases.
The length of the springs remains the same.
The springs break immediately.
Wear the safety goggles during this experiment. Hang the spring from the clamp stand and add the masses one at a time. Which diagram best shows the setup for this experiment?
A diagram showing a spring hanging from a clamp stand with masses added one at a time and safety goggles worn.
A diagram showing a spring lying on a table with no clamp stand or masses.
A diagram showing a clamp stand with no spring or masses attached.
A diagram showing masses placed directly on the clamp stand without a spring.
What forces are acting in this case?
Gravity and friction
Only gravity
Only friction
No forces are acting
Wear the safety goggles during this experiment. Hang the spring from the clamp stand and add the masses one at a time. 4. Add the forces to your diagram and use arrows to show the direction of the force. Which way should the arrows point to indicate the direction of the force?
Away from the spring
Towards the spring
Upwards only
In a circular motion
You should have one piece of paper that is screwed up into a ball and one piece that is flat. Drop the pieces of paper from shoulder height one at a time and time how long it takes to fall to the floor. Which piece of paper will reach the floor faster?
The screwed-up ball of paper
The flat piece of paper
Both will reach at the same time
Neither will reach the floor
You should have one piece of paper that is screwed up into a ball and one piece that is flat. Drop the pieces of paper from shoulder height one at a time and time how long it takes to fall to the floor. Which diagram best shows the two pieces of paper falling?
A diagram showing the ball-shaped paper falling faster than the flat paper.
A diagram showing both papers falling at the same speed.
A diagram showing the flat paper falling faster than the ball-shaped paper.
A diagram showing both papers floating upwards.
Which forces should be added to the diagram of a falling paper, with arrows showing their directions?
Gravity and air resistance
Gravity and magnetic force
Air resistance and friction
Gravity and electric force
Explain why there is a difference in the times of the two pieces of paper.
Because air resistance affects the pieces differently.
Because both pieces have the same mass.
Because gravity acts differently on each piece.
Because the papers are made of different materials.
Do the magnets have to be touching in order to experience the force?
Yes, they must be touching to experience the force.
No, they can experience the force without touching.
Only if they are the same type of magnet.
Only if they are placed in water.
How can you change the forces between two magnets from attractive to repulsive?
By reversing the poles of one magnet
By increasing the distance between the magnets
By heating the magnets
By covering the magnets with paper
Put the magnets together
3. What is the force called?
Magnetic force
Gravitational force
Electrostatic force
Frictional force
Put the magnets together. Which diagram correctly shows the forces between magnets in the cases of attraction and repulsion?
Arrows pointing towards each other for attraction, away from each other for repulsion
Arrows pointing away from each other for both attraction and repulsion
Arrows pointing towards each other for both attraction and repulsion
No arrows shown in either case
What happens to the reading on the Newton meter as more masses are added?
The reading on the Newton meter increases.
The reading on the Newton meter decreases.
The reading on the Newton meter stays the same.
The reading on the Newton meter fluctuates randomly.
How much does the reading go up by each time 100g is added?
The reading goes up by 10 units each time 100g is added.
The reading goes up by 5 units each time 100g is added.
The reading goes up by 20 units each time 100g is added.
The reading goes up by 50 units each time 100g is added.
Draw a diagram to show the experiment of hanging masses from a Newton meter.
A Newton meter with masses hanging from its hook, showing the scale reading.
A thermometer placed in water, showing temperature change.
A ruler measuring the length of a pencil.
A beaker filled with sand, showing volume measurement.
What forces are acting? Add these to the diagrams and show the directions.
Gravity, normal force, and friction are acting; show their directions on the diagrams.
Only gravity is acting; show its direction on the diagrams.
Only friction is acting; show its direction on the diagrams.
No forces are acting; leave the diagrams blank.
Pull the metal block along the desk, then pull the metal block along the wood. Which surface is the most tricky to pull the block along?
Desk
Wood
Both surfaces are equally tricky
Neither surface is tricky
What causes this?
A chemical reaction
A change in temperature
A physical force
A biological process
Draw a diagram of the experiment where you pull a metal block along a desk and then along wood.
A diagram showing a metal block being pulled on both a desk and wood surfaces.
A diagram showing only a metal block on a desk.
A diagram showing only a metal block on wood.
A diagram showing a metal block being pushed on both surfaces.
What are the names of the forces that are acting? Add these names to the diagram and add the directions of the forces with arrows.
The forces acting are gravity, normal force, and friction. Add these names and arrows to the diagram.
The forces acting are only gravity and magnetic force. Add these names and arrows to the diagram.
The forces acting are tension, buoyancy, and electric force. Add these names and arrows to the diagram.
The forces acting are only friction and air resistance. Add these names and arrows to the diagram.
Put the duck or piece of cork into the beaker. Push the duck/cork down into the water, what happens when you let go?
The duck/cork floats back to the surface.
The duck/cork sinks to the bottom and stays there.
The duck/cork dissolves in the water.
The duck/cork changes color.
What causes this?
A specific factor or event
A random occurrence
An unknown reason
No identifiable cause
Put the duck or piece of cork into the beaker. Which diagram best shows the floating object?
A diagram with the object floating at the surface of the water
A diagram with the object sinking to the bottom of the beaker
A diagram with the object halfway submerged in the water
A diagram with the object outside the beaker
Which of the following correctly identifies the forces acting on an object and shows their directions with arrows on a diagram?
Gravity and friction, with arrows pointing down and opposite to motion
Gravity and tension, with arrows pointing up and down
Only gravity, with an arrow pointing up
Friction and air resistance, with arrows pointing in the same direction as motion
Hold the toy car at the top of the ramp. Let go, what happens?
The toy car rolls down the ramp.
The toy car stays at the top of the ramp.
The toy car jumps off the ramp.
The toy car moves up the ramp.
Hold the toy car at the top of the ramp. What should you do next in the experiment?
Draw a diagram of the set up of the experiment.
Release the toy car down the ramp.
Measure the speed of the toy car.
Record the time taken for the car to reach the bottom.
What causes the car to roll down the slope?
Gravity
Friction
Wind
Engine power
Which of the following correctly identifies the forces acting and their directions on the object in the diagram?
Gravity acts downward, normal force acts upward, friction acts opposite to motion, applied force acts in the direction of motion.
Gravity acts upward, normal force acts downward, friction acts in the direction of motion, applied force acts opposite to motion.
Gravity acts downward, normal force acts downward, friction acts in the direction of motion, applied force acts upward.
Gravity acts upward, normal force acts upward, friction acts opposite to motion, applied force acts downward.
Balanced Forces This is when forces acting in opposite directions are _______ in size so that they cancel out to give _______ total or resultant force e.g. (If two or more forces are in the same direction, add the forces. If forces are acting in opposite directions, subtract.)
equal, zero
unequal, maximum
equal, maximum
unequal, zero
The resultant force here is ______ Newtons.
0
5
10
15
Which of the following is an example of balanced forces?
A book resting on a table
A car accelerating on a highway
A ball falling freely from a height
A person pushing a box and it starts moving
Fill in the blank: The speed of this object will ________
increase
decrease
remain constant
fluctuate
Fill in the blank: The speed of this object will ________
decrease
increase
remain constant
fluctuate
What happens when the object is pushed from the side?
It will change direction.
It will disappear.
It will increase in size.
It will start glowing.
Look at the first diagram showing the man in the boat with arrows indicating the forces. Are the forces acting on the boat balanced or unbalanced?
Balanced
Unbalanced
Look at the second diagram showing the man in the boat with arrows indicating the forces. Are the forces acting on the boat balanced or unbalanced?
Balanced
Unbalanced
The car will ____________
speed up
slow down
turn left
stop
The car will ____________
travel at a steady speed
fly in the sky
sink in water
stop immediately
turn into a bicycle
The car will ____________
slow down
fly away
sing a song
turn into a boat
jump over a house
The important rules from this are: 1. Unbalanced forces change the speed and/or direction of moving objects. Is this statement True or False?
True
False
The important rules from this are: 2. Balanced forces produce no change in the movement of an object. Is this statement True or False?
True
False
Object 1: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; Normal force acts upward; Friction acts opposite to motion.
Gravity acts upward; Normal force acts downward; Friction acts in the direction of motion.
Gravity acts sideways; Normal force acts diagonally; Friction acts upward.
Gravity acts downward; Normal force acts downward; Friction acts upward.
Object 2: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; Normal force acts upward; Friction acts opposite to motion.
Gravity acts upward; Normal force acts downward; Friction acts in the direction of motion.
Gravity acts sideways; Normal force acts downward; Friction acts upward.
Gravity acts downward; Normal force acts sideways; Friction acts upward.
Object 3: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; Normal force acts upward; Friction acts opposite to motion.
Gravity acts upward; Normal force acts downward; Friction acts in the direction of motion.
Gravity acts sideways; Normal force acts downward; Friction acts upward.
Gravity acts downward; Normal force acts sideways; Friction acts upward.
Object 4: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; normal force acts upward; friction acts opposite to motion; applied force acts in the direction of motion.
Gravity acts upward; normal force acts downward; friction acts in the direction of motion; applied force acts opposite to motion.
Gravity acts sideways; normal force acts sideways; friction acts upward; applied force acts downward.
Gravity acts downward; normal force acts downward; friction acts upward; applied force acts upward.
Object 5: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; Normal force acts upward; Friction acts opposite to motion.
Gravity acts upward; Normal force acts downward; Friction acts in the direction of motion.
Gravity acts sideways; Normal force acts diagonally; Friction acts upward.
Gravity acts downward; Normal force acts sideways; Friction acts upward.
Object 6: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; Normal force acts upward; Friction acts opposite to motion.
Gravity acts upward; Normal force acts downward; Friction acts in the direction of motion.
Gravity acts sideways; Normal force acts diagonally; Friction acts upward.
Gravity acts downward; Normal force acts sideways; Friction acts downward.
Object 7: Identify the types of forces acting on this object and the direction of each force.
Gravity acts downward; normal force acts upward; friction acts opposite to motion.
Gravity acts upward; normal force acts downward; friction acts in the direction of motion.
Gravity acts sideways; normal force acts downward; friction acts upward.
Gravity acts downward; normal force acts sideways; friction acts upward.
Object 8: Identify the types of forces acting on this object and specify the direction of each force.
Gravity acts downward; Normal force acts upward; Friction acts opposite to motion.
Gravity acts upward; Normal force acts downward; Friction acts in the direction of motion.
Gravity acts sideways; Normal force acts downward; Friction acts upward.
Gravity acts downward; Normal force acts sideways; Friction acts upward.
Look at the picture. What is shown in the image?
Ladder leaning against a wall
Chair placed near a window
Table with books on it
Sofa in the corner
Look at the picture. What is shown in the image?
Space shuttle blasting off
A submarine underwater
A train leaving the station
A rocket landing
Look at the picture. What is shown in the image?
Oakwood
Pinewood
Maplewood
Birchwood
Look at the picture. What is shown in the image?
Dog sitting
Cat playing
Bird flying
Rabbit eating
Look at the image. What activity is shown?
Planes flying
Boats sailing
Cars racing
People swimming
What is happening with the QE2?
QE2 not moving
QE2 is sinking
QE2 is being repaired
QE2 is launching soon
Look at the image. What is the animal doing?
Jumping out of the sea
Sleeping on the beach
Flying in the sky
Eating grass
What is the moon doing?
Moon orbiting the Earth
Moon shining on the Sun
Moon creating stars
Moon falling to the ground
Look at the image. What type of car is shown?
Formula 1 racing car
Sedan
SUV
Convertible
Look at the image. What activity are the people doing?
Tug of war
Playing chess
Swimming
Running a marathon
Look at the image of birds flying together. What is the caption for this image?
Flying level and constant
Resting on a branch
Diving into water
Building a nest
Look at the image of a sailboat on the water. What is the caption for this image?
Sailing at constant speed
Docked at the harbor
Sinking in a storm
Anchored near the shore
Preparing to set sail
Look at the image of a book on a table. What is the caption for this image?
Book on table
Book on chair
Table without book
Book under table
Look at the image of a person diving into the sea. What is the caption for this image?
Diving into the sea
Running on the beach
Climbing a mountain
Flying a kite
Look at the image of a space shuttle landing. What is the caption for this image?
Space shuttle landing
Space shuttle launching
Space shuttle in orbit
Space shuttle being assembled
Look at the image of a plane taking off. What is the caption for this image?
Plane taking off
Plane landing
Plane parked
Plane crashing
For each of the examples below, write down if there is a force or not. A. Not moving
No
Yes, there is a force
There is a strong force
There is a weak force
For each of the examples below, write down if there is a force or not. B. Speeding up
Yes
No
Maybe
Not sure
