Energy How Things Work EVS - Energy How Things Work

In cold regions, what do people save by keeping their cattle on the ground floor of their house ?

Which of these is used as a fuel in cooking food ?

What kind of energy is produced on plucking the rubber bands tied on a cardboard box ?

__________ spin with the wind to make electricity.

__________ bulbs use less electricity.

Burning wood or coal creates smoke and __________ .

Batteries contain stored energy.

Ships use solar energy to sail on water.

The Sun is a source of clean energy.

How is food cooked in your house?

Have you ever seen papads being dried in the sunlight and clothes hung out to dry?

Place a small damp cloth in the Sun. Keep another damp cloth in the shade. Which one do you think will dry first? Why?

What would your day be like if there was no electricity at all?

What do cars and scooters need to keep running?

Can you think of more examples where we use the Sun, the wind or the flowing water?

What happens if you use thinner or thicker rubber bands? Do they sound different?

What would you change in the activity to make the toy move faster or slower?

Look around your home or classroom. List any three objects that use energy and mention their source of energy. For example:
Object: Fan → Energy Source: Electricity

Let us observe a kitchen for some time. Write your observations and the questions that come to your mind in the table given below.

I Observe	I Wonder
The food is getting cooked.	How is it being cooked?

Create and share:
(a) Draw or make a simple plan of a ‘clean energy home’ that uses solar, wind or any such source of energy.
(b) Make ‘my energy diary’ for one day, record the number of times you have used the electricity fuel and so on.

From your observation write down at least three things that you have noticed:
1. Moving
2. Providing light
3. Making a sound
4. Making things cool
5. Making things hot

Walk around your home or classroom. Identify five things that run on electricity. Fill in the following table.

Device	What it does?	What it requires? (light/ sound/ heat/ movement/ cooling/ other)
1. Fan	Blows air	Movement

From the above examples, did you notice that electricity can be used for movement, and producing sound, light and heat?

What is the importance of using clean energy ? Name three clean sources of energy and give one example where each of them is used.