Energy Review

• Define energy and understand its importance for our daily activities.

• Identify and describe common forms of energy like muscular, electrical, and solar.

• Explain what fuels are and describe their most important and main uses.

Key Vocabulary

Energy

Energy is the ability to do work and is required for all activities in our daily lives.

Muscular Energy

This energy is stored in our muscles and used for physical tasks like walking and writing.

Solar Energy

Solar energy comes from the sun and can be captured by special panels to generate electricity.

Fuels

Fuels are substances like petrol or diesel that are burnt to produce energy for various uses.

What is Energy?

• Energy is the ability or capacity to do work.

• It is the power that makes objects move, change, and do things.

• We use energy for all our daily activities.

Common Forms of Energy

• We use muscular energy from our bodies to walk, write, and move things.

• Electrical energy is used to power our lights, fans, and many other devices.

• Light energy helps us see, and heat energy is used for cooking food.

• Sound energy helps us speak, while solar energy from the sun powers homes.

Common Types of Fuels

Petrol

• ​Petrol is a common fuel primarily used for powering smaller vehicles.

• ​​It is a liquid that releases energy when it is burned.

• ​This energy powers the engine to make the vehicle move.

Diesel

• ​Diesel is another liquid fuel that is used for larger vehicles.

• ​​It is commonly used to power trucks, buses, trains, and generators.

• ​Burning diesel releases the energy needed to move these heavy machines.

CNG

• ​CNG stands for Compressed Natural Gas and is a gaseous fuel.

• ​​It is used in cars, auto-rickshaws, and buses as a cleaner fuel.

• ​It burns to release the energy that powers the vehicle's engine.

• Energy is the fundamental ability required to perform any kind of work.

• Energy is found in various forms, like muscular, electrical, and light.

• Fuels release energy when burned to power vehicles and run machines.

• Solar panels capture solar energy to generate electricity for our homes.