Energy: Definition, Forms, and Transformations | Science Quiz

Question 1

As an object falls, what happens to its potential energy?

Accepted Answer

Decreases

Answer

Increases

Answer

Remains constant

Answer

Becomes zero

Question 2

What is the SI unit of energy?

Accepted Answer

Joule

Answer

Watt

Answer

Newton

Answer

Kelvin

Question 3

Which of these devices converts electrical energy into mechanical energy?

Accepted Answer

Electric motor

Answer

Electric heater

Answer

Light bulb

Answer

Battery

Question 4

Which law states that energy cannot be created or destroyed, only transformed?

Accepted Answer

First Law of Thermodynamics

Answer

Second Law of Thermodynamics

Answer

Third Law of Thermodynamics

Answer

Zeroth Law of Thermodynamics

Question 5

Which of the following is a renewable energy source?

Accepted Answer

Hydroelectricity

Answer

Fossil fuels

Answer

Nuclear energy

Answer

Natural gas

Question 6

What is the process by which plants use sunlight, water, and carbon dioxide to produce glucose?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Combustion

Answer

Evaporation

Question 7

Which of the following is an example of thermal energy?

Accepted Answer

A hot cup of tea

Answer

A moving car

Answer

A stretched rubber band

Answer

A battery

Question 8

What is the name of the law that states that energy cannot be created or destroyed?

Accepted Answer

First law of thermodynamics

Answer

Second law of thermodynamics

Answer

Third law of thermodynamics

Answer

Zeroth law of thermodynamics

Question 9

Which of the following is NOT an example of an energy store?

Accepted Answer

A moving object

Answer

A battery

Answer

A stretched rubber band

Answer

A hot cup of tea

Question 10

As a ball is thrown into the air, what happens to its potential energy?

Accepted Answer

Increases as it rises

Answer

Decreases as it rises

Answer

Remains constant

Answer

Becomes zero at the highest point

Question 11

Which device converts electrical energy into thermal energy?

Accepted Answer

Electric heater

Answer

Wind turbine

Answer

Solar panel

Answer

Battery

Question 12

Which of these is a renewable energy source?

Accepted Answer

Wind energy

Answer

Fossil fuels

Answer

Coal

Answer

Natural gas

Question 13

What is the formula for energy efficiency of a machine?

Accepted Answer

Work output / Work input

Answer

Work done / Time taken

Answer

Power output / Power input

Answer

Energy lost / Energy gained

Question 14

In a hydroelectric power station, which energy conversion takes place?

Accepted Answer

Gravitational potential energy to kinetic energy

Answer

Chemical energy to electrical energy

Answer

Kinetic energy to thermal energy

Answer

Solar energy to electrical energy

Question 15

How does the efficiency of a heat engine impact its environmental effect?

Accepted Answer

Higher efficiency leads to less environmental impact

Answer

Lower efficiency leads to less environmental impact

Answer

Efficiency has no impact on environmental impact

Answer

Efficiency only affects the cost of operation

Question 16

Which of the following best describes kinetic energy?

Accepted Answer

The energy an object has due to its motion

Answer

The energy an object has due to its position

Answer

The energy an object has due to its temperature

Answer

The energy an object has due to its chemical composition

Question 17

A car is moving at a constant speed. Which form of energy would decrease if the car were to come to a sudden stop?

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Both kinetic and potential energy

Answer

Neither kinetic nor potential energy

Question 18

Which of the following devices converts chemical energy into electrical energy?

Accepted Answer

Battery

Answer

Motor

Answer

Turbine

Answer

Generator

Question 19

The standard international unit of energy is the:

Accepted Answer

Joule

Answer

Watt

Answer

Newton

Answer

Volt

Question 20

The energy efficiency of a machine is a measure of its ability to:

Accepted Answer

Consume less energy to perform a task

Answer

Produce more energy than it consumes

Answer

Convert all energy into useful work

Answer

Generate energy from renewable sources

Question 21

Which of the following is not a type of energy?

Accepted Answer

Gravity

Answer

Kinetic energy

Answer

Chemical energy

Answer

Light energy

Question 22

A ball rolling down a slope is gaining what form of energy?

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Answer

Electrical energy

Question 23

What is the SI unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Ampere

Question 24

Which of the following is an example of thermal energy?

Accepted Answer

Heat from a fire

Answer

Moving water

Answer

Sunlight

Answer

Electricity flowing through a wire

Question 25

What is the process by which energy moves from one object to another without direct contact?

Accepted Answer

Radiation

Answer

Conduction

Answer

Convection

Answer

Friction

Question 26

Which of the following energy sources is renewable?

Accepted Answer

Hydropower

Answer

Fossil fuels

Answer

Nuclear energy

Answer

Natural gas

Question 27

What is a major drawback of using fossil fuels for energy?

Accepted Answer

They produce greenhouse gases

Answer

They are renewable

Answer

They are expensive to extract

Answer

They are difficult to transport

Question 28

What is the main reason for using a transformer in an electrical grid?

Accepted Answer

To increase voltage for long-distance transmission

Answer

To decrease voltage for household use

Answer

To convert AC to DC

Answer

To store electrical energy

Question 29

A roller coaster car rolls down a hill and up another hill of the same height. At the peak of the second hill, which type of energy is at its greatest?

Accepted Answer

Gravitational potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Chemical energy

Question 30

When a light bulb is turned on, electrical energy is transformed into:

Accepted Answer

Light and thermal energy

Answer

Kinetic energy

Answer

Potential energy

Answer

Chemical energy

Question 31

Which of the following is a renewable energy source?

Accepted Answer

Solar energy

Answer

Coal

Answer

Oil

Answer

Natural gas

Question 32

A moving car possesses:

Accepted Answer

Both kinetic and potential energy

Answer

Kinetic energy only

Answer

Potential energy only

Answer

Neither kinetic nor potential energy

Question 33

The energy stored in a stretched rubber band is an example of:

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Chemical energy

Question 34

Which of the following is a measure of the rate at which energy is transferred?

Accepted Answer

Power

Answer

Energy

Answer

Force

Answer

Velocity

Question 35

Which of the following is NOT a type of energy?

Accepted Answer

Gravity

Answer

Kinetic

Answer

Potential

Answer

Thermal

Question 36

Energy cannot be created or destroyed, but it can be transformed from one form to another. This is known as the:

Accepted Answer

Law of Conservation of Energy

Answer

Law of Thermodynamics

Answer

Law of Gravity

Answer

Law of Motion

Question 37

A car's engine converts chemical energy into:

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Answer

Electrical energy

Question 38

A light bulb converts electrical energy into:

Accepted Answer

Light energy

Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Question 39

The efficiency of a machine is calculated as the ratio of:

Accepted Answer

Useful output to total input

Answer

Total input to useful output

Answer

Useful output to potential output

Answer

Potential output to useful output

Question 40

Which of the following is stored when an object is stretched or compressed?

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Chemical energy

Question 41

At the highest point of a ball's flight, what type of energy does it have the most of?

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Electrical energy

Question 42

Which of the following cannot change one form of energy into another?

Accepted Answer

Gravity

Answer

A chemical reaction

Answer

A generator

Answer

A battery

Question 43

Which device converts electrical energy into kinetic energy?

Accepted Answer

Motor

Answer

Light bulb

Answer

Battery

Answer

Resistor

Question 44

As a ball falls down, what happens to its kinetic energy?

Accepted Answer

Increases

Answer

Stays the same

Answer

Decreases

Answer

Becomes zero

Question 45

Which of these energy sources is renewable?

Accepted Answer

Wind

Answer

Coal

Answer

Natural gas

Answer

Oil

Question 46

What is the efficiency of an energy transfer?

Accepted Answer

The ratio of useful energy output to total energy input

Answer

The difference between energy input and output

Answer

The amount of energy lost during transfer

Answer

The rate at which energy is transferred

Question 47

In science, the unit for measuring energy is the:

Accepted Answer

Joule

Answer

Watt

Answer

Newton

Answer

Kelvin

Question 48

Which of the following describes potential energy?

Accepted Answer

Stored energy due to position or condition

Answer

Energy of motion

Answer

Energy related to temperature

Answer

Energy associated with electrical charge

Question 49

Which statement about the energy of a car traveling at a constant speed is accurate?

Accepted Answer

Its total energy remains unchanged.

Answer

Its kinetic energy is increasing.

Answer

Its potential energy is increasing.

Answer

Its thermal energy is increasing.

Question 50

Which material conducts thermal energy effectively?

Accepted Answer

Metal

Answer

Wood

Answer

Plastic

Answer

Rubber

Question 51

Which energy source is considered renewable?

Accepted Answer

Solar energy

Answer

Fossil fuels

Answer

Nuclear power

Answer

Natural gas

Question 52

In the International System of Units (SI), energy is measured in:

Accepted Answer

Joule

Answer

Watt

Answer

Newton-meter

Answer

Calorie