Forces and Motion: Interactive Learning Quizzes for Fourth Graders

Question 1

Imagine a ball resting motionless on a table. If you and your friend push the ball with equal force in opposite directions, what will happen to the ball?

Accepted Answer

The ball will remain stationary.

Answer

The ball will move faster to the right.

Answer

The ball will move faster to the left.

Question 2

When a person pushes a wall with a force of 50 newtons, what force does the wall push back with?

Accepted Answer

50 newtons

Answer

0 newtons

Answer

10 newtons

Answer

100 newtons

Question 3

Question:
A ball is rolling on a flat surface. How does friction affect the ball's motion? Explain how the roughness of the surface impacts the amount of friction and the ball's speed.

Accepted Answer

Friction slows down the ball because it creates a force that opposes the ball's motion. The rougher the surface, the greater the friction, and the slower the ball will roll.

Answer

Friction speeds up the ball because it pushes the ball forward.

Answer

Friction has no effect on the ball's motion.

Question 4

What is terminal velocity? How does it happen, and can you give an example of it in everyday life?

Accepted Answer

Terminal velocity is the maximum speed an object reaches when falling through a fluid (like air or water). It occurs when the force of gravity pulling the object down is balanced by the force of air resistance pushing up.

Answer

Terminal velocity is the point at which an object stops accelerating.

Answer

Terminal velocity only happens in water, not in air.

Answer

Gravity doesn't affect terminal velocity.

Question 5

In a game of tug-of-war, Team A pulls the rope right, and Team B pulls the rope left. Which of the following best explains how Newton's third law of motion is demonstrated in this example?

Accepted Answer

Team A's pull on the rope is the action force, and Team B's pull on the rope is the reaction force.

Answer

The rope is the action force, and the ground is the reaction force.

Answer

The ground is the action force, and the rope is the reaction force.

Answer

There is no action-reaction force in a game of tug-of-war.

Question 6

What is the difference between speed and velocity? Provide simple examples to explain your answer.

Accepted Answer

Speed tells us how fast something is moving, while velocity tells us how fast something is moving and in which direction.

Answer

Speed is how far something has traveled, while velocity is how quickly something has traveled.

Answer

Speed and velocity are the same thing.

Answer

Velocity tells us how quickly something is speeding up or slowing down, while speed tells us how quickly something is moving.

Question 7

A student applies a force of 50 Newtons to push a box 10 meters. How much work is done by the student?

Accepted Answer

500 Joules

Answer

5 Joules

Answer

5,000 Joules

Answer

50 Newtons

Question 8

When you throw a ball up in the air, it reaches a point where it stops going up and starts falling back down. What is this point called?

Accepted Answer

Peak

Answer

Start

Answer

Bottom

Answer

Halfway

Question 9

Which of the following is not a force?

Accepted Answer

Stretching

Answer

Gravity

Answer

Friction

Answer

Air resistance

Question 10

An object at rest will remain at rest unless something pushes or pulls it.

Accepted Answer

True

Answer

False

Question 11

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Mass

Answer

Temperature

Answer

Volume

Question 12

The force applied to an object is doubled. What happens to the acceleration of the object if its mass stays the same?

Accepted Answer

It doubles.

Answer

It halves.

Answer

It stays the same.

Answer

It triples.

Question 13

Which of the following actions would increase the air resistance experienced by a moving object?

Accepted Answer

Increasing its speed

Answer

Decreasing its surface area

Answer

Streamlining its shape

Answer

Using lighter materials

Question 14

Which of these is not a type of force you have learned in this unit?

Accepted Answer

Heat

Answer

Gravity

Answer

Friction

Answer

Magnetism

Question 15

Which of the following laws of motion explains why a ball sitting on the ground will stay there without moving?

Accepted Answer

Newton's First Law

Answer

Newton's Second Law

Answer

Newton's Third Law

Answer

Newton's Fourth Law

Question 16

A toy car is rolling on the floor and slows down as it moves. What force is causing the car to slow down?

Accepted Answer

Friction

Answer

Gravity

Answer

Magnetism

Answer

Air resistance

Question 17

What will happen to the force of gravity between two objects if the mass of one object is doubled?

Accepted Answer

It will double

Answer

It will halve

Answer

It will stay the same

Answer

It will quadruple

Question 18

A cyclist is pedaling forward at a steady speed. Which force is equal in strength and in the opposite direction to the force of friction acting on the bike?

Accepted Answer

Force from the pedals

Answer

Gravity

Answer

Air resistance

Answer

Magnetic force

Question 19

Which of the following is an example of a force that only happens when two objects are directly touching?

Accepted Answer

Friction

Answer

Gravity

Answer

Magnetism

Answer

Air resistance

Question 20

A toy car weighing 2 kilograms is pushed across the floor with a force of 5 newtons. What is the acceleration of the car?

Accepted Answer

2.5 m/s²

Answer

1 m/s²

Answer

5 m/s²

Answer

10 m/s²

Question 21

As you throw a ball into the air and it goes up, which force brings the ball back to the ground?

Accepted Answer

Gravity

Answer

Friction

Answer

Air resistance

Answer

Magnetic force

Question 22

Which of these is NOT an example of a force?

Accepted Answer

Heat

Answer

A push

Answer

A pull

Answer

Gravity

Question 23

Which of Newton's laws of motion states that an object at rest will stay at rest unless a force acts on it?

Accepted Answer

First law

Answer

Second law

Answer

Third law

Answer

Zeroth law

Question 24

When a car keeps moving at the same speed, it means:

Accepted Answer

It has zero acceleration

Answer

It has positive acceleration

Answer

It has negative acceleration

Answer

It has changing acceleration

Question 25

Which unit do we use to measure force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Second

Question 26

What type of friction happens when two surfaces slide past each other?

Accepted Answer

Sliding friction

Answer

Static friction

Answer

Rolling friction

Answer

Fluid friction

Question 27

Which of the following demonstrates an action-reaction pair?

Accepted Answer

Swimmer pushing off from the pool wall

Answer

Ball rolling downhill

Answer

Person jumping

Answer

Tree swaying in the wind

Question 28

How are mass and inertia related?

Accepted Answer

Mass is directly related to inertia

Answer

Mass is inversely related to inertia

Answer

Mass and inertia are unrelated

Answer

Inertia is directly related to mass

Question 29

A ball is tied to a string and swung in a circle. Which force keeps the ball moving in a circular path?

Accepted Answer

Centripetal force

Answer

Centrifugal force

Answer

Gravity

Question 30

When a ball is kicked up into the air, what happens to it at the peak of its trajectory? Describe the changes in its acceleration and velocity at this point.

Accepted Answer

The ball momentarily stops, having zero velocity but experiencing downward acceleration due to gravity.

Answer

The ball stops moving, and its acceleration and velocity become zero.

Answer

The ball keeps moving upwards, maintaining its velocity and acceleration.

Answer

The ball continues moving upwards, but its velocity decreases, and its acceleration increases.

Question 31

Imagine you're playing a game of pool. What happens to the total momentum of the balls after they collide?

Accepted Answer

The total momentum stays the same.

Answer

The momentum of each ball never changes.

Answer

The total momentum is equal to the momentum of the heaviest ball.

Answer

The momentum of each ball is equal to its weight times its speed.

Question 32

When a child pushes a wall with a force of 50 newtons, what force does the wall push back with?

Accepted Answer

50 newtons

Answer

0 newtons

Answer

100 newtons

Question 33

Which of these is NOT a force that can affect an object?

Accepted Answer

Temperature

Answer

Gravity

Answer

Friction

Answer

Normal force

Question 34

What type of force pulls objects towards each other?

Accepted Answer

Gravity

Answer

Friction

Answer

Magnetism

Answer

Electricity

Question 35

When you push a book across the table, what type of force are you using?

Accepted Answer

Push force

Answer

Pull force

Answer

Gravitational force

Answer

Magnetic force

Question 36

Which of Newton's laws of motion states that an object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an unbalanced force?

Accepted Answer

First Law

Answer

Second Law

Answer

Third Law

Answer

Fourth Law

Question 37

When multiple forces are acting on an object and the object does not move, the forces are said to be:

Accepted Answer

Balanced

Answer

Unbalanced

Answer

Equal

Answer

Opposite

Question 38

If you push an object with a stronger force, what will happen to its movement?

Accepted Answer

It will move faster.

Answer

It will move slower.

Answer

It will change direction.

Answer

It will stop moving.

Question 39

Which of these is NOT a surface that creates a lot of friction?

Accepted Answer

Smooth metal

Answer

Sandpaper

Answer

Ice

Answer

Glass

Question 40

What is the unit of measurement for force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Second

Question 41

Which of the following is NOT considered a simple machine?

Accepted Answer

Car engine

Answer

Pulley

Answer

Wheel and axle

Answer

Lever

Question 42

What is the primary function of a gear?

Accepted Answer

To transfer movement

Answer

To create friction

Answer

To store energy

Answer

To change direction

Question 43

What force causes a ball to roll down a slope?

Accepted Answer

Gravity

Answer

Friction

Answer

Air resistance

Answer

Push

Question 44

When you throw a ball up, what force causes it to fall back down?

Accepted Answer

Gravity

Answer

Wind

Answer

Loss of energy

Answer

Someone pulling it down

Question 45

Which of the following is **not** a type of force?

Accepted Answer

Speed

Answer

Gravity

Answer

Magnetism

Answer

Friction

Question 46

According to Newton's first law of motion, an object at rest will remain at rest unless acted upon by an unbalanced ______.

Accepted Answer

Force

Answer

Friction

Answer

Gravity

Answer

Momentum

Question 47

Which of the following objects experiences the greatest force of gravity?

Accepted Answer

A bowling ball

Answer

A feather

Answer

A car

Answer

A book

Question 48

What happens to the motion of an object when a force is applied in the same direction as its motion?

Accepted Answer

It speeds up.

Answer

It slows down.

Answer

It changes direction.

Answer

It stops moving.

Question 49

When a ball is kicked, what force causes it to slow down and eventually stop?

Accepted Answer

Friction

Answer

Gravity

Answer

Inertia

Answer

Magnetism

Question 50

What is the unit of measurement for force?

Accepted Answer

Newtons

Answer

Grams

Answer

Meters

Answer

Seconds

Question 51

Which of the following factors does NOT affect the amount of friction between two surfaces?

Accepted Answer

Humidity

Answer

Type of surfaces

Answer

Area of contact

Answer

Temperature

Question 52

According to Newton's second law of motion, what happens to the acceleration of an object when the applied force is increased?

Accepted Answer

It increases

Answer

It decreases

Answer

It stays the same

Answer

It becomes negative

Question 53

Identify the force that is NOT mentioned in the list?

Accepted Answer

Telepathy

Answer

Push

Answer

Pull

Answer

Friction

Question 54

Newton's first law of motion states that:

Accepted Answer

An object in motion remains in motion and an object at rest stays at rest unless acted upon by an outside force.

Answer

The acceleration of an object is directly proportional to the net force acting on the object.

Answer

For any action, there is an equal and opposite reaction.

Answer

The force of gravity is proportional to the mass of an object.

Question 55

Which scenario will cause an object to speed up?

Accepted Answer

Applying a force in the same direction the object is moving

Answer

Applying a force in the opposite direction the object is moving

Answer

Applying a force at a 90-degree angle to the object's direction of motion

Answer

Applying no force to the object

Question 56

What force causes a ball rolling on the ground to eventually stop?

Accepted Answer

Friction

Answer

Gravity

Answer

Force of muscle

Answer

Air resistance

Question 57

Identify the situation where balanced forces are acting.

Accepted Answer

A book resting on a table

Answer

A car accelerating down a hill

Answer

A ball bouncing off a wall

Answer

A person pushing against a wall

Question 58

What is inertia?

Accepted Answer

The tendency of an object to resist changes in its motion

Answer

The force that attracts objects towards the Earth

Answer

The force that pushes objects away from each other

Answer

The force that causes objects to move faster and faster

Question 59

Which of the following best exemplifies Newton's third law of motion?

Accepted Answer

A rocket propelling itself into space

Answer

A person jumping up and down

Answer

A book lying on a table

Answer

A ball rolling down a hill

Question 60

The force of gravity pulls all objects towards the:

Accepted Answer

Earth

Answer

Sun

Answer

Moon

Answer

Center of the universe

Question 61

What is the key difference between velocity and speed?

Accepted Answer

Velocity is a vector quantity that describes an object's speed and direction, while speed is a scalar quantity that describes only the object's speed.

Answer

Speed is a vector quantity, while velocity is a scalar quantity.

Answer

Velocity and speed are the same thing.

Answer

Velocity is the rate of change of speed, while speed is the rate of change of velocity.

Question 62

How does friction affect the movement of objects?

Accepted Answer

Friction makes objects move slower.

Answer

Friction makes objects move faster.

Question 63

When a ball rolls on a flat surface, how does friction affect its motion?

Accepted Answer

Friction slows the ball down.

Answer

Friction makes the ball move faster.

Answer

Friction has no effect on the ball's motion.

Answer

Friction causes the ball to change direction.

Question 64

Why does a thrown ball curve downward?

Accepted Answer

Gravity pulls the ball down.

Answer

Friction between the ball and air slows it down.

Answer

Inertia keeps the ball moving straight.