Forms of Energy Worksheet (Answers, Definition and Solved Examples)

There are many forms of energy – light energy, electrical energy, heat energy, sound energy, mechanical energy, chemical energy, nuclear or atomic energy, and more. All these forms of energy can be described as potential or kinetic energy. These different forms of energy are what makes things move, machines work and living things grow.  

Let us now look at each of these forms of energy and some examples of the types of energy to understand them better.

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Kinetic Energy | Forms of Energy Worksheet

All moving objects have kinetic energy. There is an energy associated with moving objects as they are capable of doing some work or causing a change. For example, a moving person, a speeding car, or a moving ball can, say, topple other things or move them! When water or wind is in motion, it has kinetic energy. People have successfully used this water and wind energy to produce electricity, which is used to run our factories, our machines, and all electrical appliances.

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SOME COMMON FORMS OF ENERGY

1. Light Energy

Light is the only form of energy that is visible to us. It is a form of kinetic energy wherein radiation travels in waves. It comprises tiny particles known as photons, which are tiny packets of energy. It is given off by stars, light bulbs, and even hot objects! Light energy from the sun (solar energy) is used by plants to prepare their food; the sun also gives us natural light. It is also used to generate electricity.

2. Heat Energy

Also known as thermal energy, it is produced from heated up substances. We know that matter is made up of atoms that move within it. When the substance is heated, the increase in temperature causes these particles to move faster and release energy in the form of heat. For example, the warmth of the sun, baking a cake in the oven and the warmth coming out of heaters are examples of thermal energy. Understand the various types of energy with the Grade 5 Forms of Energy Solved Worksheet.

3. Electrical Energy

It is caused by moving electrical charges. These charged particles are known as electrons.  Electricity is a type of energy that comes from electrical energy. It can be generated from solar energy, wind energy, nuclear energy, and from water. Lightning, batteries, generators are examples of electrical energy.

4. Sound Energy

Sound energy is produced when a force causes an object or substance to vibrate. Sound energy travels in the form of waves and can be transmitted by solids, liquids, or gases. It cannot travel in a vacuum as there are no atoms to carry it. Vibrations cause sound energy. For example, when we talk, sing, clap our hands, tap our foot, or play a musical instrument.

5. Chemical Energy–

The energy stored in substances by virtue of their composition – atoms, and molecules is known as chemical energy. This energy is released in other forms after a chemical reaction. For example, the energy stored in food is chemical energy, which is converted into new compounds and into heat energy after digestion in our body. Chemical energy in wood is converted into heat and light energy upon burning. Other examples include biomass, coal, and chemical batteries.

6. Mechanical Energy

The energy of an object due to its motion or position is called mechanical energy. For example, a moving car or a hammer hitting a nail has mechanical energy. When we switch on a fan, electrical energy is converted into mechanical energy.

7. Nuclear Energy 

Also known as atomic energy, this energy is released in high quantities when atoms or nuclei of various elements react. Nuclear energy is used for electricity generation, medicine, industry, agriculture etc.

Classification based on sources

Renewable energy –

The energy obtained from renewable sources like sunlight, wind, water, tides, waves, and geothermal heat is known as renewable energy. These sources are naturally replenished and hence, recommended.

Non-renewable energy –

The energy obtained from non-renewable sources cannot be easily readily replaced by natural means. Examples include fossil fuels like coal, petroleum, and natural gas.

Energy can neither be created nor destroyed. It can only be transformed from one form to another. For example, when you rub your hands to get warmth, kinetic energy is converted to thermal energy; windmills convert kinetic energy into electrical energy, burning of wood changes chemical energy into heat and light energy. Sun is the source of almost all energy on earth.

Check Point

1. Energy can neither be ________ nor _________.
2. When we burn a candle, chemical energy is converted into _______ and _______ energy.
3. Name any two renewable sources of energy.
4. When you drop a ball from a height, potential energy is converted into ________.
5. A pizza or a burger has _________ energy stored in it!

FAQs

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