Q1.
What makes these things move, shine, make a sound or get warm and cold?
Answer
Energy makes all of them happen. Whether a thing moves, shines, makes a sound, gets hot or gets cold, there is always energy behind it.
The book puts it in one line:
Energy is what makes things move, light up, produce sound, do work and change temperature.
Now match a few everyday things to the energy behind them.
| What we see | What is happening | Where the energy comes from |
|---|---|---|
| A boy running | Moving | The food he ate |
| A scooter on the road | Moving | Petrol |
| The Sun at noon | Giving light and heat | The Sun itself |
| A bulb glowing | Giving light | Electricity |
| A dholak being played | Making sound | The hand that strikes it — that is, food |
| Water boiling on a stove | Getting hot | Cooking gas burning |
| A fridge keeping milk cold | Getting cool | Electricity |
The idea in one sentence: Nothing happens on its own. If something changes — if it starts moving, glows, sounds, warms or cools — energy has been used to make that change.
For your discussion: Ask each other, “If nothing had any energy at all, what would the world be like?” Nothing would move. No sound. No light except… nothing at all, because even the Sun's light is energy. That is why the chapter says energy is what makes our world active and alive.