Motion and Forces: Interactive Learning Quizzes for Seventh Graders

Question 1

Which of the following is NOT a fundamental force in physics?

Accepted Answer

Frictional force

Answer

Gravitational force

Answer

Electromagnetic force

Answer

Strong nuclear force

Question 2

Imagine a ball resting on a flat, level surface. If no forces act on the ball, what will happen according to Newton's first law of motion?

Accepted Answer

The ball will remain at rest.

Answer

The ball will start moving on its own.

Answer

The ball will gradually accelerate.

Answer

The ball will float in the air.

Question 3

Imagine a ball thrown straight up in the air. At the very top of its path, what force is acting on it?

Accepted Answer

Gravity only

Answer

Gravity and air resistance

Answer

Gravity and buoyant force

Answer

Gravity, air resistance, and buoyant force

Question 4

Which of the following is NOT a force?

Accepted Answer

Inertia

Answer

Gravitational force

Answer

Frictional force

Answer

Magnetic force

Question 5

According to Newton's Third Law of Motion, if you push against a wall with a force of 50 Newtons, how much force will the wall push back on you?

Accepted Answer

50 Newtons

Answer

25 Newtons

Answer

100 Newtons

Answer

0 Newtons

Question 6

According to Newton's Second Law of Motion, how does an object's acceleration relate to the force acting on it and its mass?

Accepted Answer

Directly proportional to force and inversely proportional to mass

Answer

Inversely proportional to force and directly proportional to mass

Answer

Equal to the force acting on it

Answer

Independent of force and mass

Question 7

When two objects interact, what occurs according to Newton's Third Law of Motion?

Accepted Answer

Each object exerts an equal and opposite force on the other.

Answer

The first object exerts a greater force on the second object than the second object exerts on the first.

Answer

Only the first object exerts a force on the second object.

Answer

The forces act on the same object.

Question 8

According to Newton's Second Law of Motion, the force acting on an object is directly proportional to its mass and acceleration. Which equation represents this law?

Accepted Answer

F = m * a

Answer

F = m * v

Answer

F = a * v

Answer

F = v * t

Question 9

Which equation correctly represents Newton's Second Law of Motion, relating force, acceleration, and mass?

Accepted Answer

F = ma

Answer

F = a/m

Answer

a = F/m

Answer

m = F/a

Question 10

Imagine a swimmer pushing off a pool wall. According to Newton's Third Law of Motion, what is the reaction force to the swimmer's push?

Accepted Answer

The wall pushing back on the swimmer

Answer

The water pushing the swimmer forward

Answer

The swimmer's feet pushing against the pool floor

Answer

The swimmer's arms pulling through the water

Question 11

According to Newton's Second Law of Motion, what factors determine an object's acceleration?

Accepted Answer

Both the object's mass and the force applied to it

Answer

Only the object's mass

Answer

Only the force applied to the object

Answer

Neither the object's mass nor the force applied to it

Question 12

Which of the following best describes a force?

Accepted Answer

A push or pull that can cause an object to move, stop moving, or change its direction

Answer

The amount of matter an object contains

Answer

How fast an object is traveling

Answer

How much energy an object has

Question 13

The force of gravity between two objects depends on their:

Accepted Answer

Masses and the distance between them

Answer

Masses only

Answer

Distance between them only

Answer

Volumes only

Question 14

A car traveling at a constant speed has reached a state of:

Accepted Answer

Equilibrium

Answer

Motion

Answer

Rest

Answer

Acceleration

Question 15

Which of the following is the unit used to measure force?

Accepted Answer

Newton

Answer

Meter

Answer

Second

Answer

Kilogram

Question 16

A rocket engine works by:

Accepted Answer

Expelling mass in one direction, propelling the rocket in the opposite direction

Answer

Pulling in air, propelling the rocket forward

Answer

Converting fuel into energy, creating thrust

Answer

Using magnets to push against the ground

Question 17

Which of the following is a vector quantity?

Accepted Answer

Force

Answer

Mass

Answer

Speed

Answer

Temperature

Question 18

At the highest point of its trajectory, the vertical velocity of a thrown ball is:

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 19

The SI unit of energy is the:

Accepted Answer

Joule

Answer

Newton

Answer

Meter

Answer

Second

Question 20

Define force.

Accepted Answer

A push or pull that affects an object

Answer

The rate of an object's movement

Answer

The energy an object contains

Answer

The weight of an object

Question 21

According to Newton's first law of motion, what happens to an object that is not acted upon by a force?

Accepted Answer

It remains stationary or moves at a steady speed.

Answer

It slows down due to friction.

Answer

Gravity pulls it towards the ground.

Answer

It gains speed over time.

Question 22

The force of gravity between two objects is directly proportional to:

Accepted Answer

Their masses

Answer

Their distance apart

Answer

Their shapes

Answer

Their temperatures

Question 23

What is the unit of force in the International System of Units (SI)?

Accepted Answer

Newton

Answer

Joule

Answer

Kilogram

Answer

Meter

Question 24

What force keeps planets orbiting the sun?

Accepted Answer

Gravity

Answer

Friction

Answer

Magnetism

Answer

Centrifugal force

Question 25

Which equation represents Newton's second law of motion?

Accepted Answer

Force = mass x acceleration

Answer

Acceleration = force x mass

Answer

Mass = force x acceleration

Answer

Velocity = force x time

Question 26

Which of the following is a type of force that acts between two magnets?

Accepted Answer

Magnetic force

Answer

Gravitational force

Answer

Frictional force

Question 27

A baseball player hits a ball with a force of 100 newtons. If the ball has a mass of 0.15 kilograms, what will be the acceleration of the ball?

Accepted Answer

67 m/s^2

Answer

10 m/s^2

Answer

150 m/s^2

Answer

667 m/s^2

Question 28

Which of the following is an example of a balanced force?

Accepted Answer

A book resting on a table

Answer

A person pushing a wall

Answer

A car accelerating down the road

Answer

A ball thrown into the air

Question 29

Which of the following does NOT affect friction?

Accepted Answer

The speed of the objects

Answer

The type of surfaces in contact

Answer

The weight of the objects

Question 30

Which of the following is a measure of how much matter an object has?

Accepted Answer

Mass

Answer

Speed

Answer

Velocity

Answer

Acceleration

Question 31

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

Accepted Answer

Mass

Answer

Gravity

Answer

Friction

Answer

Magnetism

Question 32

According to Newton's first law of motion, what happens to an object that is at rest?

Accepted Answer

It will stay at rest until a force is applied to it

Answer

It will move in a straight line until a force is applied to it

Question 33

When a ball is thrown into the air, what force pulls it back towards the ground?

Accepted Answer

Gravity

Answer

Friction

Question 34

When does a car accelerate?

Accepted Answer

When its speed increases

Answer

Its speed decreases

Question 35

Which of the following has the greatest effect on an object's inertia?

Accepted Answer

Mass

Answer

Velocity

Question 36

What does Newton's third law of motion describe?

Accepted Answer

For every action, there is an equal and opposite reaction

Answer

The force of gravity is proportional to the mass of the objects

Question 37

If a force is applied to an object in a direction that is perpendicular to its motion, what will happen to the object?

Accepted Answer

Change its direction of motion

Answer

Decelerate

Question 38

What is the standard international unit of force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Second

Question 39

According to Newton's first law of motion, what happens to an object at rest?

Accepted Answer

Will remain at rest

Answer

Move with constant speed

Answer

Accelerate

Answer

Decelerate

Question 40

Which of the following does NOT affect the force of gravity between two objects?

Accepted Answer

Temperature of the objects

Answer

Mass of the objects

Answer

Distance between the objects

Answer

Size of the objects

Question 41

When a car moves at a constant velocity, what can you say about the net force acting on the car?

Accepted Answer

Zero

Answer

Forward

Answer

Backward

Answer

Upward

Question 42

Which of the following represents a balanced force?

Accepted Answer

A book resting on a table

Answer

A moving car

Answer

A rolling ball

Answer

A jumping person

Question 43

What is the mathematical relationship between force, mass, and acceleration, according to Newton's second law of motion?

Accepted Answer

F = ma

Answer

a = Fm

Answer

m = Fa

Answer

F = a/m

Question 44

Which force keeps the Earth revolving around the Sun?

Accepted Answer

Gravity

Answer

Friction

Answer

Electromagnetism

Answer

Tension

Question 45

Which force acts when two surfaces rub together?

Accepted Answer

Friction

Answer

Gravity

Answer

Electromagnetism

Answer

Air resistance

Question 46

An object is moving in a circle. Which force causes it to change direction?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Question 47

When an object is not moving or changing direction, what is true about the forces acting on it?

Accepted Answer

The total force acting on the object is zero.

Answer

The forces acting on the object are all the same size.

Answer

The forces acting on the object are all pointing in the same direction.

Question 48

When an object moves in a circle, what force causes it to change direction?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Question 49

According to Newton's Second Law of Motion, how are force, mass, and acceleration related?

Accepted Answer

Force is directly proportional to both mass and acceleration.

Answer

Force is inversely proportional to mass and directly proportional to acceleration.

Answer

Force is independent of both mass and acceleration.

Question 50

According to Newton's First Law of Motion, what happens to an object that is not being pushed or pulled?

Accepted Answer

It will keep moving in the same direction and speed.

Answer

It will slow down and eventually stop.

Answer

It will change direction.

Answer

It will speed up.

Question 51

Imagine you push a box with twice the force. What happens to the box's speed-up (acceleration) if its weight stays the same?

Accepted Answer

The speed-up doubles.

Answer

The speed-up quadruples.

Answer

The speed-up stays the same.

Answer

The speed-up halves.

Question 52

When an object moves in a circle, what force makes it change direction?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Answer

Tension

Question 53

Which force is an unbalanced force that acts on an object moving through a fluid?

Accepted Answer

Drag

Answer

Friction

Answer

Gravity

Question 54

Which of the following best describes Newton's First Law of Motion?

Accepted Answer

An object at rest stays at rest, and an object in motion stays in motion with the same speed and direction unless acted on by an unbalanced force.

Answer

An object in motion slows down and eventually stops unless acted on by an unbalanced force.

Answer

The acceleration of an object is inversely proportional to its mass.

Answer

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

Question 55

When an object moves in a circle, which force causes it to change direction?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Answer

Normal force

Question 56

According to Newton's second law of motion, how are acceleration, mass, and force related?

Accepted Answer

Acceleration is directly proportional to force and inversely proportional to mass.

Answer

Acceleration is directly proportional to both mass and force.

Answer

Acceleration is inversely proportional to force and directly proportional to mass.

Answer

Acceleration is independent of both force and mass.

Question 57

An object with a mass of 10 kilograms is moving at a constant speed of 10 meters per second. What is the total force acting on the object?

Accepted Answer

0 Newtons

Answer

10 Newtons

Answer

100 Newtons

Answer

-10 Newtons

Question 58

According to Newton's Third Law of Motion, when you push against a wall, what does the wall do in response?

Accepted Answer

The wall pushes back on you with the same force in the opposite direction.

Answer

The wall pushes back on you with less force in the opposite direction.

Answer

The wall pushes back on you with more force in the opposite direction.

Answer

The wall does not push back on you at all.

Question 59

An object moves in a circle. Which force causes the object's speed or direction to change?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Answer

Tension

Question 60

According to Newton's First Law of Motion, which of these describes an object at rest staying at rest?

Accepted Answer

A ball on a table

Answer

A car speeding up

Answer

A ball rolling downhill

Answer

A person leaping

Question 61

An object is moving in a circle at a constant speed. Which force changes the direction of the object's motion?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Question 62

Which statement best describes Newton's Third Law of Motion?

Accepted Answer

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

Answer

The force of an action is always greater than the force of its reaction.

Answer

Action and reaction forces always happen at different times.

Question 63

An object moves in a circle. Which force changes the direction of its motion?

Accepted Answer

Centripetal force

Answer

Gravity

Answer

Friction

Answer

Magnetism

Question 64

When an object is in equilibrium, what is the net force acting on it?

Accepted Answer

Zero

Answer

Equal to the object's weight

Answer

Equal to the object's mass