Need Help?

Get in touch with us


What is Energy? Why is Energy All Around?

Grade 3
Jul 28, 2023


We need the energy to run, jump, play, and do different work.

Thus, “the ability to do work is known as energy.”

Our body gets the energy to play, think, and do work from the food we eat. Even we can’t work without eating food. We human beings get energy from food and work. So, the stored chemical energy in the food gives us the energy to do work. We get energy from food after digestion.

Similarly, non-living things like cars, buses, airplanes, fans, TV, etc., also need energy to work. But they get energy from different kinds of sources like petrol, diesel, or electricity. Cars, buses, and all vehicles can’t run without petrol or diesel. Computers, laptops, and some toys can’t work without batteries, which have chemical energy stored in them. We can’t watch TV when there is no electricity. A grinder, washing machine, electric iron, and TV can’t work when there is no electricity.


Any time you do some work, you use some or other type of energy.



So, can we say we use energy only when we make something work or move?


No, it is not the correct definition of energy.

Sometimes you use energy even if you are not doing work.

Use energy even if you are not doing work
Use energy even if you are not doing work

If you push a heavy box that doesn’t move, you are not doing work, but your energy is getting exhausted.

Work is done when a force makes an object move.

A force makes an object move
A force makes an object move

Similarly, suppose a person is just standing and carrying very heavy luggage. The person is applying force on the luggage by giving it support but the luggage does not move from its place. So, the work done by him is zero, but his energy is being utilized.

Standing in one place and carrying heavy weight
Standing in one place and carrying heavy weight


Thus, we can define energy as the ability or capacity to do work. We use energy even when we don’t do any work scientifically.


What is energy?


Energy is the capacity or ability to do work.


Can we do some work without using energy?


No, it is not possible. Any time you do some work, you use some form of energy.


Can we spend energy without doing some work?


Yes, scientifically speaking work is done when we apply force and the body moves. If we apply force and the body doesn’t move the work done is zero, but energy is being spent by applying force.  


  • All things around us living or non-living function because of having energy.
  • Energy is defined as the ability of a body to do work.
  • Any time you do some work, you use some or other type of energy.
  • Any work is done when a force makes an object move.
  • We can spend energy without doing work.
Energy All Around Us


Related topics

Uniform and Non Uniform Motion

Uniform and Non-Uniform Motion: Definition and Differences

Introduction Uniform and Non-Uniform Motion Moving objects move in many different ways. Some move fast and some slowly. Objects can also move in different kinds of paths. We shall categorize the motions done by objects into two categories based on the pattern of their pace of motion in this session. Explanation: Uniform Motion: Let us […]

Weather Maps

Weather Maps: Explanation, Reading, and Weather Fonts

Introduction: Evolution Weather Forecasting Weather forecasting is the use of science and technology to forecast atmospheric conditions for a certain place and period. Meteorology is used to forecast how the weather will behave in the future after collecting objective data on the atmosphere’s actual state in a certain area. Weather Tools Meteorologists use many tools […]

Momentum vs velocity

Momentum vs Velocity: Expression and SI Units

Introduction: In our daily life, we make many observations, such as a fast bowler taking a run-up before bowling, a tennis player moving her racket backward before hitting the tennis ball and a batsman moving his bat backward before hitting the cricket ball. All these activities are performed to make the ball move with great […]


Fossils: Formation, Importance, and Different Types

Introduction: Fossils are the preserved remains of plants and animals whose bodies were buried under ancient seas, lakes, and rivers in sediments such as sand and mud. Any preserved trace of life that is more than 10,000 years old is also considered a fossil. Soft body parts decompose quickly after death, but hard body parts […]


Other topics