Look at the text. What gives the torch its electricity?

THE FRIDGE A fridge keeps food cold and fresh. It moves the heat out of the box. The warm air leaves at the back. Close the door quickly to keep the cold in. Where does the warm air leave the fridge?

Look at the text. Where do the bees carry the pollen?

WIND POWER A wind turbine makes electricity from wind. The long blades turn in the wind. It turns slowly in a light wind. It works best on windy days. It stops when the air is still. What does the turbine do in a light wind?

TOUCHSCREENS A phone screen feels your finger, not a pen. It works when your skin touches the glass. Thick gloves stop it working. Special gloves with a soft tip do work. What must touch the glass to make the screen work?

A BIKE LIGHT A small dynamo sits next to the wheel. The turning wheel makes the dynamo work. The dynamo makes electricity for the light. The light goes out when the bike stops. What makes the dynamo work?

Look at the text. What stops the echo?

MAPS ON A PHONE The maps app finds your place with satellites. It needs a clear view of the sky. It works badly deep inside a building. Then it shows the road to your school. Where does the maps app work badly?

CHARGING A PHONE The battery holds the energy for the phone. A game uses more power than a message. The phone charges faster when the screen is off. Charge it before a long trip. When does the phone charge faster?

SMOKE ALARM The alarm listens for smoke in the air. It makes a loud sound when it finds smoke. Test it once a month with the button. Change the battery once a year. It says you should test the smoke alarm once a month.

WHY WE FREEZE FOOD Tiny living things make food go bad. They grow quickly in a warm room. They grow very slowly in a freezer. So frozen food stays good for months. Where do the tiny living things grow quickly?

RUST ON IRON Iron goes rusty when it is wet. Water and air together make the rust. Dry iron does not go rusty. Paint keeps the water off the metal. When does the iron go rusty?

WHERE RAIN COMES FROM The sun heats the water in the sea. Some water rises as a gas. High in the sky the gas cools and makes clouds. The drops in the clouds fall as rain. What happens to the gas high in the sky?

A HOT AIR BALLOON Warm air is lighter than cold air. The burner heats the air inside the balloon. The warm air lifts the balloon up. The balloon comes down when the air inside cools. When does the balloon come down?

Look at the text. It says you should wash your hands for about 20 seconds.

RECYCLING OLD CANS People put old drink cans in a blue box. At the centre the cans are melted. The hot metal is sent to a factory. There it is made into new cans. What happens to the cans at the centre?

Look at the text. How long does charging the car at home take?

ICE AND WATER Water becomes ice at 0 degrees Celsius. Ice is lighter than the same amount of water. So the ice floats on the top. The ice melts again in a warm room. Why does the ice float on the water?

THE MOON The Moon has no light of its own. It shines with light from the sun. It goes round the Earth about once a month. We always see the same side of it. It says that the Moon makes its own light.

Look at the two bulbs. How many years does the LED bulb last?