Motion and Forces: Interactive Learning Quizzes for 7th Grade Science

Question 1

Which of the following does NOT affect the acceleration of an object?

Accepted Answer

The color of the object

Answer

The object's mass

Answer

The net force acting upon it

Answer

The direction of the net force

Question 2

Two objects with different masses are dropped from the same height. Which object will hit the ground first?

Accepted Answer

Both objects will hit the ground at the same time

Answer

The heavier object

Answer

The lighter object

Question 3

Which law of motion states that an object at rest remains at rest, or in uniform motion in a straight line, unless acted upon by an unbalanced force?

Accepted Answer

Newton's first law

Answer

Newton's second law

Answer

Newton's third law

Answer

Law of gravity

Question 4

When two objects interact, the forces they exert on each other are:

Accepted Answer

Equal in magnitude and opposite in direction

Answer

Unequal in magnitude and opposite in direction

Answer

Equal in magnitude and same in direction

Answer

Unequal in magnitude and same in direction

Question 5

What is the force that attracts objects toward each other?

Accepted Answer

Gravity

Answer

Friction

Answer

Tension

Answer

Magnetic force

Question 6

Which device changes electrical energy into mechanical energy?

Accepted Answer

Electric motor

Answer

Light bulb

Answer

Battery

Answer

Solar panel

Question 7

A rocket launches into space. What force pushes the rocket forward?

Accepted Answer

Thrust

Answer

Gravity

Answer

Friction

Answer

Air resistance

Question 8

An object moves at a steady speed in a straight line. Which statement about the forces acting on the object is correct?

Accepted Answer

The total force acting on the object is zero.

Answer

The total force acting on the object is in the same direction as its motion.

Answer

The total force acting on the object is in the opposite direction to its motion.

Answer

The total force acting on the object is greater than the force of friction acting on the object.

Question 9

Which of the following choices best completes Newton's first law of motion?

Accepted Answer

An object in motion will stay in motion, and an object at rest stays at rest until acted on by an unbalanced force.

Answer

The greater the mass of an object, the smaller its acceleration when the same force is applied.

Answer

For every action, there exists an equal but opposite reaction.

Answer

An object in free fall accelerates at a rate of 9.8 m/s² regardless of its mass.

Question 10

Which of the following choices is not a type of friction?

Accepted Answer

Magnetism

Answer

Static friction

Answer

Kinetic friction

Answer

Rolling friction

Question 11

At its highest point, a thrown ball encounters the acting force of:

Accepted Answer

Gravity only

Answer

Air resistance only

Answer

Gravity and air resistance

Answer

Neither gravity nor air resistance

Question 12

The unit of force in the metric system is:

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter per second squared

Answer

Joule

Question 13

Newton's first law of motion is also known as the

Accepted Answer

Law of Inertia

Answer

Law of Acceleration

Answer

Law of Gravity

Answer

Law of Friction

Question 14

In the SI system, the unit of force is the

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter per second squared

Answer

Joule

Question 15

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

Accepted Answer

A book resting on a table

Answer

A car accelerating down the road

Answer

A ball thrown in the air

Answer

A person pushing a wall

Question 16

The force that pulls objects towards the center of the Earth is

Accepted Answer

Gravitational force

Answer

Magnetic force

Answer

Electrostatic force

Answer

Nuclear force

Question 17

The relationship between an object's mass and its weight is that

Accepted Answer

Weight is directly proportional to mass

Answer

Weight is inversely proportional to mass

Answer

Weight is equal to mass

Answer

Weight is not related to mass

Question 18

Which of the following is NOT a type of friction?

Accepted Answer

Magnetic friction

Answer

Static friction

Answer

Sliding friction

Answer

Rolling friction

Question 19

An object with a mass of 10 kilograms is moving in a straight line at a constant speed of 5 meters per second. What is the total force acting on the object?

Accepted Answer

0 Newtons

Answer

10 Newtons

Answer

50 Newtons

Question 20

Identify the type of force known as a direct physical interaction between two contacting surfaces.

Accepted Answer

Frictional force

Answer

Gravitational force

Answer

Electrostatic force

Answer

Magnetic force

Question 21

According to Newton's first law, an object will remain at rest unless acted upon by an external force. This principle is known as:

Accepted Answer

Inertia

Answer

Acceleration

Answer

Momentum

Answer

Weight

Question 22

Which physical quantity is characterized by both magnitude and direction?

Accepted Answer

Acceleration

Answer

Speed

Answer

Mass

Answer

Volume

Question 23

Identify the force that acts towards the center of circular motion, keeping an object moving in a circular path.

Accepted Answer

Centripetal force

Answer

Gravitational force

Answer

Centrifugal force

Answer

Frictional force

Question 24

The energy possessed by an object due to its motion is referred to as:

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Electrical energy

Answer

Chemical energy

Question 25

Identify the International System of Units (SI) unit for force.

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Kilogram

Question 26

Which factor does NOT influence the time period of a swinging pendulum?

Accepted Answer

Amplitude of the swing

Answer

Length of the pendulum

Answer

Mass of the pendulum bob

Answer

Acceleration due to gravity

Question 27

A ball is launched vertically upward with an initial velocity of 10 m/s. What is its velocity when it reaches its maximum height?

Accepted Answer

0 m/s

Answer

10 m/s

Answer

-10 m/s

Answer

5 m/s

Question 28

Which of the following is NOT a force encountered in everyday life?

Accepted Answer

Inertia

Answer

Gravitational force

Answer

Magnetic force

Answer

Frictional force

Question 29

According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will remain in motion with the same speed and direction unless acted upon by an outside force.

Accepted Answer

True

Answer

False

Question 30

A car accelerates uniformly from rest to 60 mph in 10 seconds. What is the car's acceleration?

Accepted Answer

6 mph/s

Answer

5 mph/s

Answer

4 mph/s

Answer

3 mph/s

Question 31

At the highest point of its path, what is the vertical velocity of a ball thrown straight upward?

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 32

What force is responsible for keeping the Moon in its orbit around the Earth?

Accepted Answer

Gravitational force

Answer

Centrifugal force

Answer

Frictional force

Answer

Magnetic force

Question 33

A car travels at a steady speed on a straight road. What force balances friction?

Accepted Answer

Propulsion

Answer

Gravity

Answer

Inertia

Answer

Air resistance

Question 34

Which law of motion describes an object remaining at rest unless a force acts on it?

Accepted Answer

First law

Answer

Second law

Answer

Third law

Answer

Law of universal gravitation

Question 35

At the highest point of its trajectory, which force acts on a ball thrown vertically upward?

Accepted Answer

Gravity only

Answer

Air resistance only

Answer

Gravity and air resistance

Answer

Neither gravity nor air resistance

Question 36

Rocket engines work by expelling hot gases. Which law of motion does this illustrate?

Accepted Answer

Third law

Answer

First law

Answer

Second law

Answer

Law of universal gravitation

Question 37

Which of the following is a vector quantity?

Accepted Answer

Acceleration

Answer

Speed

Answer

Mass

Answer

Temperature

Question 38

A car accelerates from a standstill. Which graph represents the relationship between velocity and time?

Accepted Answer

Straight line with a positive slope

Answer

Straight line with a negative slope

Answer

Parabolic curve

Answer

Hyperbolic curve

Question 39

What force keeps a satellite orbiting the Earth?

Accepted Answer

Gravity

Answer

Friction

Answer

Inertia

Answer

Air resistance

Question 40

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

Accepted Answer

Newton (N)

Answer

Kilogram (kg)

Answer

Meter per second squared (m/s²)

Question 41

Which of the following is not a type of force?

Accepted Answer

Centrifugal force

Answer

Contact force

Answer

Frictional force

Answer

Gravitational force

Question 42

According to Newton's second law of motion, the relationship between force (F), mass (m), and acceleration (a) is:

Accepted Answer

F = ma

Answer

F = 1/2 ma²

Answer

F = mg

Question 43

What is the formula for calculating the gravitational force between two objects?

Accepted Answer

F = G(m₁m₂) / r²

Answer

F = G(m₁m₂)r²

Answer

F = Gm₁ + m₂

Question 44

What is the relationship between weight and mass?

Accepted Answer

Weight is mass multiplied by the acceleration due to gravity (g).

Answer

Mass is weight multiplied by the acceleration due to gravity (g).

Answer

Weight and mass are the same thing.

Question 45

What is the approximate value of the acceleration due to gravity on Earth?

Accepted Answer

9.8 m/s²

Answer

10 m/s²

Answer

11.8 m/s²

Question 46

Which of the following is NOT one of Newton's laws of motion?

Accepted Answer

The force of gravity is proportional to the mass of the object attracting it.

Answer

An object at rest stays at rest unless acted on by an unbalanced force.

Answer

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

Answer

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

Question 47

A force of 10 Newtons is applied to an object with a mass of 2 kilograms. What is the object's acceleration?

Accepted Answer

2 m/s²

Answer

0.5 m/s²

Answer

5 m/s²

Answer

10 m/s²

Question 48

Which of the following is a contact force?

Accepted Answer

Friction

Answer

Gravity

Answer

Magnetism

Answer

Electrostatic force

Question 49

What is the acceleration due to gravity on Earth?

Accepted Answer

9.8 m/s²

Answer

10 m/s²

Answer

11 m/s²

Answer

12 m/s²

Question 50

A ball is thrown vertically upward. What is the direction of the force of gravity acting on the ball at the highest point of its trajectory?

Accepted Answer

Downward

Answer

Upward

Answer

Leftward

Answer

Rightward

Question 51

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

Accepted Answer

The force that keeps a ball moving in a circular path

Answer

The force of gravity between the Earth and the Moon

Answer

The force of friction between a car's tires and the road

Answer

The force that causes a rocket to launch into space

Question 52

What is the difference between speed and velocity?

Accepted Answer

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

Answer

Velocity is a scalar quantity, while speed is a vector quantity.

Answer

Speed and velocity are both scalar quantities.

Answer

Speed and velocity are both vector quantities.

Question 53

A car travels 100 miles in 2 hours. What is the car's average speed?

Accepted Answer

50 mph

Answer

25 mph

Answer

75 mph

Answer

100 mph