We need energy for everything we do.
Energy is used all around us.
There are many different forms of energy like heat energy, light energy, and sound energy.
Due to this, there are many different ways in which we use energy.
There are many different ways to get energy. These are called sources of energy.
The day is warm and bright. It is the Sun which gives us light and heat energy.
So, Sun is a source of light and heat energy on Earth.
The people walk, talk, and play.
They get their energy from the food they eat.
Vehicles like cars and bikes run on road.
They get their energy from gasoline.
We listen to radio in a car.
It runs on electrical energy from the car's battery.
We can fly kites high up in the sky because of wind energy.
When kids slide down a plane or roll down a hill, some of the energy comes from gravity, called the gravitational energy.
We use heat energy to cook food.
The bell rings and sound energy is produced.
This sound energy reaches kids' ears to tell them that dinner is ready.
What happens to energy after you use it? Do you use it all up, and it disappears?
When vehicles like cars and bikes run, the chemical energy of the gasoline is converted into mechanical energy.
When we play a car radio, the chemical energy of the battery is converted into the sound energy.
When we play a music system, the electrical energy is converted into sound energy.
When we switch on a room heater, the electrical energy is converted into heat energy.
Energy is the ability to do work, that is, to move or change something.
Forms of energy are the ways energy is used.
Sources of energy are things we get energy from.
A. Be an Energy Detective! Find sources of energy.
In your home, school, or outdoors, find:
Can you think of something that uses water for energy?
B. Forms of Energy: Make a roller coaster!
What you need:
What to do:
C. Forms of Energy: Make a Musical Instrument!
What you need:
What to do:
D. Forms of Energy: Use the Sun's Heat to Melt Chocolate!
What you need:
What to do: