Y4 Spelling Test 5.4

It is the process of using energy, or the amount of energy that is used.

Using less energy to perform an action

It is the decision and practice of using less energy.

It is the trusted, government-backed symbol for energy efficiency helping us all save money and protect the environment through energy-efficient products and practices.

Producing a bright light from a heated filament or other part.

A very bright, tube-shaped electric lights.

It is a semiconductor device that produces light from electricity.

What does LED stand for?

Any automotive fuel other than gasoline and diesel fuel.

It is a type of fuel that can be used to power an engine. t is prepared by changing vegetable oil, animal fat, special types of algae and possibly even sewage.