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WorksheetsPhysical Science: Investigating Forces and Motion
Total questions: 13
Worksheet time: 59mins
What is a force?
A push, pull, or twist that causes movement
A visible object
A type of energy
A type of matter
What unit is used to measure force?
Newton
Kilogram
Meter
Joule
How does gravity affect a swing that isn’t moving?
It pulls the swing down
It pushes the swing up
It makes the swing move sideways
It has no effect on the swing
What happens to your weight on the moon compared to Earth?
It becomes one-sixth of your weight on Earth
It doubles
It remains the same
It becomes one-third of your weight on Earth
What is a lever used for in simple machines?
To multiply the force put into a job
To decrease the force needed for a job
To increase the speed of a job
To change the direction of force
Which of the following is NOT a simple machine mentioned in the passage?
Lever
Pulley
Bicycle
Wedge
How does a longer lever make work easier?
By producing a greater turning force about the pivot
By reducing the weight of the object
By increasing the speed of the object
By changing the direction of the force
What happens to kinetic energy when brakes are applied on a bike?
It is converted into heat energy
It increases
It remains the same
It is converted into potential energy
What force is responsible for slowing down a bike when brakes are applied?
Friction
Gravity
Magnetism
Air resistance
What is the definition of speed according to the passage?
Distance per unit of time
Speed in a specific direction
Change in velocity over time
Force created by acceleration
How is velocity different from speed?
Velocity includes direction, speed does not
Velocity is measured in meters per second squared
Velocity is the opposite of deceleration
Velocity is only applicable to fighter pilots
If a car travels 100 meters in 5 seconds in a straight line, what is its velocity?
20 meters per second
5 meters per second
100 meters per second
25 meters per second
What happens to fighter pilots when they accelerate too fast?
Blood runs from their heads to their legs
Their skin becomes temporarily distorted
They decelerate immediately
They lose control of the plane
Why do stunt pilots' faces become distorted during a loop-the-loop?
Their skin is being accelerated
They are wearing anti-g trousers
They are decelerating rapidly
Their planes are moving too slowly
What is the state of an object when all forces acting on it are balanced?
Equilibrium
Motion
Acceleration
Inertia
Which of the following is an example of an object in equilibrium?
A light hanging from the ceiling
A car accelerating
A ball rolling down a hill
A person running
What happens to an object when the forces acting on it are balanced?
It stays still or continues its current motion
It accelerates
It changes direction
It sinks
What is the Grand Unified Theory (GUT) trying to achieve?
Link all different forces together
Explain the motion of planets
Describe the behavior of light
Understand the human brain
Which force balances the weight of a floating boat?
Upward thrust of the water
Wind force
Frictional force
Magnetic force
What happens to an object when the forces on it are not balanced?
It changes speed or direction
It remains stationary
It explodes
It disappears
When is a juggling ball's velocity greatest?
When it leaves and approaches the hand
At the top of its path
When it is in your hand
When it is on the ground
What provides the force when a tennis ball is hit?
The racquet
The wind
The player's hand
The ground
What happens to an object that is already moving when a force is applied?
It changes direction, speeds up, or slows down
It stops immediately
It continues at the same speed
It explodes
What is the effect of a bigger force on an object?
The object accelerates more
The object decelerates
The object remains stationary
The object changes color
What is the speed at which gravity and air resistance balance out for a skydiver?
195 km/h
150 km/h
200 km/h
180 km/h
How does friction help in walking?
It provides grip between the ground and a person’s feet.
It reduces the weight of a person.
It increases the speed of walking.
It makes the ground softer.
Why do rock climbers wear sticky, flexible rubber shoes?
To increase friction between their shoes and the rock.
To make climbing more comfortable.
To reduce the weight of their feet.
To protect their feet from sharp rocks.
What is the effect of friction between machine parts?
It leads to wear and tear.
It makes machines faster.
It cools down the machine parts.
It increases the efficiency of machines.
Why do objects moving through water experience more friction than those in air?
Water is denser than air.
Water is colder than air.
Water is more slippery than air.
Water is heavier than air.
What is Newton's First Law of Motion also known as?
Law of Inertia
Law of Acceleration
Law of Gravity
Law of Motion
According to Newton's Second Law of Motion, what happens when a force is applied to an object?
The object moves in the direction of the force
The object remains at rest
The object moves in the opposite direction of the force
The object moves in a circular path
Why do leaves get blown around more than sticks according to Newton's Second Law?
Leaves catch more wind, creating more force and motion
Leaves are lighter than sticks
Sticks are heavier and resist motion
Leaves are more aerodynamic
What branch of math did Newton start to aid his work?
Calculus
Algebra
Geometry
Trigonometry
How does Dr. Trachette Jackson use calculus in her work?
To study cancer cells
To design bridges
To calculate distances
To predict weather patterns
What does Newton's Third Law of Motion state?
For every action there is an equal and opposite reaction.
Objects in motion stay in motion unless acted upon by an external force.
Force equals mass times acceleration.
Energy cannot be created or destroyed.
How does the reaction force help a rocket propel through space?
The rocket pushes burnt fuel out the back, and the burnt fuel pushes the rocket forward.
The rocket's engines create a vacuum that pulls the rocket forward.
The rocket uses magnetic fields to propel itself.
The rocket relies on gravitational forces to move forward.
Why do airplanes need a runway to take off?
To gain enough speed for lift by allowing air to flow over and under the wings.
To align with the wind direction for a smoother takeoff.
To ensure the engines are at full power before takeoff.
To check all systems are functioning properly before flight.
Who were the first to invent rockets?
The Chinese
The Greeks
The Egyptians
The Romans
What role does air pressure play in the lift of an airplane wing?
Lower pressure on top of the wing and higher pressure below creates lift.
Higher pressure on top of the wing and lower pressure below creates lift.
Equal pressure on both sides of the wing creates lift.
Air pressure has no effect on lift.
What is the primary function of gravity as described in the passage?
To pull things together
To push things apart
To create mass
To stop motion
Who was the first person to realize that the force making the moon orbit Earth is the same force that makes things fall to Earth?
Albert Einstein
Isaac Newton
Galileo Galilei
Nikola Tesla
What would happen to objects without gravity, according to the passage?
They would float around in space
They would fall to the center of the Earth
They would become heavier
They would stop moving
Why do astronauts' bones get weaker in space?
Because they are not used to gravity
Because they are exposed to radiation
Because they lack exercise
Because they are not used to the absence of gravity
According to the passage, where do objects fall towards on Earth?
Towards the center of the Earth
Towards the North Pole
Towards the South Pole
Towards the equator
What determines the size of the gravitational attraction between two objects?
Their masses and the distance between them
The color of the objects
The speed of the objects
The temperature of the objects
Why is Earth's gravitational pull stronger than the pull between two pool balls?
Because Earth has a much larger mass
Because Earth is closer to the pool balls
Because pool balls have no gravitational field
Because Earth is made of different materials
What happens to the gravitational attraction between two objects as the distance between them increases?
It decreases
It increases
It stays the same
It becomes zero
Which force is NOT involved in performing an ollie on a skateboard?
The rider's foot pushing down on the tail
The ground's reaction when the tail hits the ground
The rider's foot moving up the board
The wind resistance
What role does the rider's foot play in performing an ollie?
It pushes down on the tail and moves up the board
It only pushes down on the tail
It only moves up the board
It does not play any role
What materials are mentioned as being magnetic in the passage?
Iron, steel, nickel, and cobalt
Copper, aluminum, silver, and gold
Plastic, wood, glass, and rubber
Lead, zinc, tin, and brass
How can the magnetic field around a magnet be visualized according to the passage?
By using iron filings
By using a compass
By using a thermometer
By using a voltmeter
What happens when you break a permanent magnet in half?
It becomes two smaller magnets, each with its own north and south poles
The north and south poles disappear
It loses its magnetic properties
It becomes a single pole magnet
Why does a compass needle point north according to the passage?
Because Earth has its own magnetic field
Because of the gravitational pull of the North Pole
Because of the wind direction
Because of the Earth's rotation
What is the shape of a bar magnet as described in the passage?
Long, thin rectangular shape
Circular shape
Square shape
Triangular shape
What is electromagnetism?
The study of electric and magnetic forces and their interactions
A type of magnet that does not require electricity
A device used to measure electric current
A phenomenon unrelated to electricity
How can an electromagnet be made stronger?
By using a core of iron, like a nail
By using a longer wire
By reducing the electric current
By using a plastic core
Why do stereos make a buzzing noise when mobile phones are used near them?
Because of electromagnetic interference
Because the stereo is malfunctioning
Because the phone is too close to the speakers
Because of a weak battery in the stereo
Which of the following devices uses electromagnets?
Doorbells
Televisions
Refrigerators
Washing machines
What is the rate of change of velocity called?
Acceleration
Deceleration
Speed
Inertia
Which force acts against the movement of an object?
Drag
Gravity
Friction
Inertia
What is the force that makes planets orbit the sun?
Gravity
Electromagnetism
Magnetic Field
Inertia
What is the term for a simple machine that multiplies the force put into it?
Levers
Pivot
Mass
Newtons
What is the unit of force?
Newton
Mass
Velocity
Speed
What is the resistance to motion called?
Inertia
Friction
Drag
Equilibrium
What is the area where magnetic force can be detected called?
Magnetic Field
Electromagnetism
Gravity
Pivot
