Energy: Learn and Master the Basics of Energy in Science

Question 1

As a ball falls, what type of energy conversion occurs?

Accepted Answer

Gravitational potential energy to kinetic energy

Answer

Gravitational potential energy to thermal energy

Answer

Thermal energy to kinetic energy

Answer

Kinetic energy to gravitational potential energy

Question 2

Which of these does NOT influence the amount of potential energy stored in an object?

Accepted Answer

The object's temperature

Answer

The object's mass

Answer

The object's height

Answer

The acceleration due to gravity

Question 3

When a person pushes a box, which form of energy mainly increases?

Accepted Answer

The box's kinetic energy

Answer

The box's thermal energy

Answer

The box's gravitational potential energy

Answer

The person's chemical energy

Question 4

Which of the following energy sources can be replenished naturally?

Accepted Answer

Solar power

Answer

Oil

Answer

Coal

Answer

Natural gas

Question 5

When a rubber band is stretched, what kind of energy is stored within it?

Accepted Answer

Elastic potential energy

Answer

Thermal energy

Answer

Chemical energy

Answer

Gravitational potential energy

Question 6

A ball is held high above the ground. Which type of energy does it possess?

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Elastic energy

Question 7

Which of the following actions increases the internal thermal energy of an object?

Accepted Answer

Heating it up

Answer

Cooling it down

Answer

Moving it

Answer

Dropping it

Question 8

Which of the following is the unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Meter

Answer

Second

Question 9

Which of the following energy transformations occurs when an electric stove is turned on?

Accepted Answer

Electrical to thermal

Answer

Thermal to electrical

Answer

Light to electrical

Answer

Electrical to light

Question 10

A student is riding a bicycle up a hill. Which type of energy is increasing?

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Elastic energy

Question 11

Which of the following is a renewable source of energy?

Accepted Answer

Wind

Answer

Coal

Answer

Oil

Answer

Natural gas

Question 12

Which of the following is NOT a form of energy?

Accepted Answer

Velocity

Answer

Potential energy

Answer

Heat

Answer

Electrical energy

Question 13

In a closed system, what happens to the total amount of energy over time?

Accepted Answer

Stays the same

Answer

Increases

Answer

Decreases

Question 14

As a car rolls down a hill, what happens to its potential energy compared to its kinetic energy?

Accepted Answer

Potential energy decreases, while kinetic energy increases.

Answer

Potential energy increases, while kinetic energy decreases.

Answer

Both potential and kinetic energy stay the same.

Question 15

Which of the following is the best definition of kinetic energy?

Accepted Answer

Energy possessed by a moving object

Answer

Energy stored in a stretched rubber band

Answer

Energy stored in chemical bonds

Answer

Energy released by a burning fuel

Question 16

As a ball is thrown upwards, which form of energy conversion occurs?

Accepted Answer

Kinetic energy to potential energy

Answer

Potential energy to kinetic energy

Answer

Thermal energy to light energy

Answer

Chemical energy to electrical energy

Question 17

How does the potential energy of an object change when it is lifted higher?

Accepted Answer

It increases

Answer

It decreases

Answer

It remains the same

Answer

It becomes zero

Question 18

What unit is used to measure energy in the International System of Units (SI)?

Accepted Answer

Joule

Answer

Watt

Answer

Newton

Answer

Kelvin

Question 19

Which device transforms electrical energy into thermal energy?

Accepted Answer

Electric heater

Answer

Solar panel

Answer

Wind turbine

Answer

Hydroelectric generator

Question 20

What is the term for the process by which plants convert light energy into chemical energy?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Combustion

Answer

Transpiration

Question 21

Explain the difference between heat and temperature.

Accepted Answer

Heat is a form of energy, while temperature measures the average kinetic energy of particles.

Answer

Temperature is a form of energy, while heat measures the average kinetic energy of particles.

Answer

Heat and temperature are the same thing.

Answer

Heat is measured in Kelvin, while temperature is measured in Joules.

Question 22

Which process exemplifies the transfer of thermal energy?

Accepted Answer

Heating water in a kettle

Answer

Freezing water to form ice cubes

Answer

Recharging a phone battery

Answer

Rolling a ball down a slope

Question 23

Which of the following energy sources is considered renewable?

Accepted Answer

Solar energy

Answer

Coal

Answer

Petroleum

Answer

Natural gas

Question 24

State the Law of Conservation of Energy.

Accepted Answer

Energy cannot be created or destroyed, but it can be transferred or transformed.

Answer

Energy can be created or destroyed as needed.

Answer

Energy is always lost in any transformation.

Answer

Energy is always gained in any transformation.

Question 25

What type of device converts electrical energy into mechanical energy?

Accepted Answer

Motor

Answer

Generator

Answer

Battery

Answer

Solar panel

Question 26

What happens to the temperature of an object when its thermal energy decreases?

Accepted Answer

It decreases

Answer

It increases

Answer

It remains unchanged

Answer

It becomes negative

Question 27

Explain the distinction between potential energy and kinetic energy.

Accepted Answer

Potential energy represents stored energy, while kinetic energy represents energy associated with motion.

Answer

Kinetic energy represents stored energy, while potential energy represents energy associated with motion.

Answer

Potential energy and kinetic energy are identical concepts.

Answer

Potential energy is negative, whereas kinetic energy is positive.

Question 28

Which of the following is the energy possessed by a moving object?

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Answer

Chemical energy

Question 29

Which of the following does NOT affect the amount of thermal energy an object has?

Accepted Answer

Volume

Answer

Temperature

Answer

State of matter

Answer

Mass

Question 30

When a battery powers a flashlight, what type of energy transformation occurs?

Accepted Answer

Chemical to light energy

Answer

Light to chemical energy

Answer

Electrical to light energy

Answer

Thermal to light energy

Question 31

What is the SI unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Kelvin

Question 32

What happens to the energy of a system when work is done on it?

Accepted Answer

It increases

Answer

It decreases

Answer

It remains the same

Answer

It becomes zero

Question 33

A device has an energy efficiency of 75%. What percentage of the energy input is converted into useful energy?

Accepted Answer

75%

Answer

25%

Answer

50%

Answer

100%

Question 34

Which of the following is not a form of energy?

Accepted Answer

Mass

Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Question 35

A car moving at a constant speed has:

Accepted Answer

Kinetic energy only

Answer

Potential energy only

Answer

Both kinetic and potential energy

Answer

Neither kinetic nor potential energy

Question 36

Which of the following is a renewable source of energy?

Accepted Answer

Wind energy

Answer

Fossil fuels

Answer

Nuclear energy

Answer

Coal

Question 37

What happens to the total amount of energy in a closed system?

Accepted Answer

It remains constant

Answer

It increases

Answer

It decreases

Answer

It fluctuates

Question 38

Which of the following is a good conductor of heat?

Accepted Answer

Metal

Answer

Wood

Answer

Plastic

Answer

Air

Question 39

What is the unit of measurement for energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Kelvin

Question 40

What method can be used to transfer energy over long distances?

Accepted Answer

Electricity

Answer

Sound waves

Answer

Heat conduction

Answer

Convection

Question 41

What is the primary energy source for most living organisms?

Accepted Answer

Sunlight

Answer

Coal

Answer

Natural gas

Answer

Petroleum

Question 42

What is NOT considered a form of energy?

Accepted Answer

Mass

Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Question 43

An object rolling down a slope possesses which type of energy?

Accepted Answer

Both kinetic and potential energy

Answer

Kinetic energy only

Answer

Potential energy only

Answer

Neither kinetic nor potential energy

Question 44

When heat is applied to a substance, what typically occurs?

Accepted Answer

Its temperature increases.

Answer

Its mass increases.

Answer

Its volume decreases.

Answer

Its color changes.

Question 45

Which device transforms electrical energy into kinetic energy?

Accepted Answer

Electric motor

Answer

Electric heater

Answer

Electric bulb

Answer

Electric kettle

Question 46

What unit is used to measure energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Volt

Question 47

Which of the following energy sources is considered renewable?

Accepted Answer

Wind power

Answer

Coal

Answer

Natural gas

Answer

Nuclear power

Question 48

How is kinetic energy mathematically related to speed?

Accepted Answer

Kinetic energy is directly proportional to the square of speed.

Answer

Kinetic energy is inversely proportional to speed.

Answer

Kinetic energy is independent of speed.

Answer

Kinetic energy is directly proportional to speed.

Question 49

Which of the following is an example of potential energy?

Accepted Answer

A book resting on a shelf

Answer

A ball rolling down a hill

Answer

A flowing river

Answer

A burning candle

Question 50

What transformation of energy occurs when you ride a bicycle up a hill?

Accepted Answer

Kinetic energy to potential energy

Answer

Chemical energy to kinetic energy

Answer

Thermal energy to electrical energy

Answer

Potential energy to kinetic energy

Question 51

Which of the following energy sources is used to generate electricity in most power plants?

Accepted Answer

Fossil fuels (coal, gas, oil)

Answer

Nuclear reactions

Answer

Solar energy

Answer

Wind energy

Question 52

What is the main difference between renewable and non-renewable energy sources?

Accepted Answer

Renewable sources can be replenished naturally, while non-renewable sources cannot.

Answer

Renewable sources produce less pollution, while non-renewable sources produce more.

Answer

Renewable sources are more expensive to use, while non-renewable sources are cheaper.

Answer

Renewable sources are only available in certain locations, while non-renewable sources are found everywhere.

Question 53

Which of the following factors affects the amount of potential energy an object has?

Accepted Answer

Both mass and height

Answer

Mass of the object

Answer

Height of the object above the ground

Answer

Neither mass nor height

Question 54

What is the energy carrier that plants use during photosynthesis?

Accepted Answer

Sunlight

Answer

Glucose

Answer

Chlorophyll

Answer

Water

Question 55

What unit is used to measure energy in the International System of Units (SI)?

Accepted Answer

Joule

Answer

Watt

Answer

Kilowatt-hour

Answer

Calorie

Question 56

Which of the following is a type of energy that is stored in the bonds of atoms and molecules?

Accepted Answer

Chemical energy

Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy