Here are some examples of energy transformations taking place in our daily life

Electric Motors

This is used in different appliances like fans, refrigerators etc

Here Electrical energy is converted into Kinetic Energy

Electrical Energy → Kinetic Enrgy

 

Electric Generator

It is used to generate electricity

Here, Mechanical Energy is converted into electrical energy

Mechanical Energy → Electrical Energy

 

Electric iron

It is used to iron clothes.

Here, electrical is converted into heat energy.

Electrical energy → Heat energy


Electric Bulb

It is used to produce light.

Here, electrical energy is converted into heat energy which is then converted into light energy.

Electrical energy → Heat energy → Light energy

In case of a CFL, the electrical energy is directly converted into light energy and hence there is no wastage of energy. Therefore,

CFLs are preferred.

 

Radio

It is used to listen to songs or news.

Here, electrical energy is converted into kinetic energy which is then converted into sound energy.

Electrical energy → Kinetic energy → Sound energy

 

Steam Engine

It is used to run trains.

Here, heat energy is converted into kinetic energy.

Heat energy → Kinetic energy

 

Car engine

It used used to run cars

Here, chemical energy is converted into heat energy which is then converted into kinetic energy.

Chemcal energy → Heat energy → Kinetic energy

 

Cell

It is used in many electronics.

Here, chemical energy is converted into electrical energy.

Chemical energy → Electrical energy

 

Gas Stove

It is used to cook food.

Here, chemical energy is converted into heat energy.

Chemical energy → Heat energy

 

Solar water heater

It is used to warm water.

Here, light energy is converted into heat energy.

Light energy → Heat energy

 

Solar cell

It is used to provide electricity.

Here, light energy is converted into electrical energy.

Light energy → Electrical energy

 

Example of Energy Transformation - Teachoo.jpg

 

Questions

NCERT Question 3 - A battery lights a bulb. Describe the energy changes involved in the process.

View Answer

 

NCERT Question 7 - What are the various energy transformations that occur when you are riding a bicycle?

View Answer

 

NCERT Question 8 - Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?

View Answer

  1. Class 9
  2. Chapter 11 Class 9 - Work and Energy

About the Author

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.