How is energy described in science?

What is the main source of energy for Earth?

Pupils lift a handkerchief holding a ball. In which direction is energy transferred as the handkerchief launches the ball?

What is a change from one form of energy to another called?

What carries energy from a mango tree to a child who eats from it?

What form of energy lets us see the words on a page?

How is a glowing firefly classified as a source?

A room is lit by an electric bulb. What kind of source supplies the illumination?

What happens to most visible light that reaches ordinary clear window glass?

Why can a mirror look bright when a lamp shines on it?

Where does the light we see from the Moon come from?

Which use of light sends a message rather than lighting an area for someone to see?

When Liza turns on a flashlight, what change in energy produces its beam?

How does daylight help green plants make food?

What form of energy carries the ringing of a school bell to pupils?

Ice melts beside a lit stove. What form of energy causes this change?

What do we call using only the energy we need and avoiding waste?

A classroom is empty after lessons. What should pupils do with its electric lights before leaving?

Which activity can cause sunburn?

Liza's eyes hurt after looking at a very bright lamp. What should she do to protect her eyes?