Energy makes things happen. It makes a fan spin, a lamp shine and a radio sing. Energy is never used up – it changes from one kind into another.
Energy changes
| Thing | Energy goes in as … | and comes out as … |
|---|---|---|
| 💡 lamp | electricity | light (and some heat) |
| 🌀 fan | electricity | movement |
| 📻 radio | electricity | sound |
| 🔥 iron | electricity | heat |
| 🚗 toy car with batteries | stored energy in the batteries | movement |
| 🍌 you! | food | movement and heat |
Save electricity
- Switch off lights and fans when you leave a room.
- Close the fridge door quickly.
- Turn off the TV when nobody is watching.
- Use sunlight in the day instead of lights.
⚠️ Safety: never touch plugs or sockets with wet hands, and never push anything into a socket.
Super scientists
A scientist asks questions and does tests to find answers. Here are some famous scientists:
- Isaac Newton found out about pushes, pulls and why things fall.
- Marie Curie discovered new materials and won two big science prizes.
- George Washington Carver found hundreds of uses for peanuts and helped farmers.
- Professor Julian Kenny of Trinidad studied our animals, plants and environment and wrote books about them.
Energy is never made from nothing and never destroyed. It only changes from one kind to another.
You are a scientist too, every time you look closely and ask “why?”
TRY ITEnergy explorers
Choose a game.
Let’s practise
Try each one. Then tap Show answer to check.
1. What does a lamp change electricity into?
Show answer
Light (and a little heat).
2. What does a fan change electricity into?
Show answer
Movement.
3. Name two ways to save electricity at home.
Show answer
For example switch off lights and fans, close the fridge quickly, turn off the TV.
4. Why must you never touch a socket with wet hands?
Show answer
Water and electricity together can give you a dangerous shock.
5. What does a scientist do?
Show answer
Asks questions and does tests to find answers.
Quick check
1. Is energy used up?
Show answer
No. It changes into other kinds of energy.
2. Where does your body get energy?
Show answer
From food.
3. Name one famous scientist.
Show answer
For example Isaac Newton, Marie Curie, George Washington Carver, Julian Kenny.
Words to know
Say these words with a grown-up. Can you use each one in a sentence?
energy · electricity · light · heat · sound · movement · change · save · scientist
Try it at home
- Go round your home with an adult. List things that use electricity and what energy they give out.
- Be the family “energy monitor” for a week: tick each time you switch something off.
- Make a poster about a scientist from Trinidad and Tobago or the Caribbean. Ask a grown-up to help you find one (doctors, nature scientists and engineers count too!).
For parents and teachers
After this lesson, your child should be able to:
- identify energy changes in everyday appliances
- suggest ways to save electricity
- name some famous scientists and say what they did
- describe what scientists do
The cards use a mix of world and Caribbean scientists. Look for local scientists in the news and add them to the conversation.
Previous: Homes in Water and on Land
Next: Infants 2 lessons (all subjects)
© 2026 Vedesh Kungebeharry. All rights reserved.