Science Block 22

Which one of these is not a source of light?

• fire

• air

• flashlight

• star

Which of the following provides us solar energy?

• water

• wind

• bulb

• sunlight

Name 1 human-made source of light.

Name 1 natural source of heat.

Which of the following is the main source of light energy on Earth?

• sun

• fire

• solar planets

• star

Light can be produced by electricity.

• True

• False

A solar lamp produces light by directly burning natural gas.

• true

• false

People use a lamp to see things, but the lamp can get quite warm. Choose 2 forms of energy that are being produced by the lamp.

• light and solar

• light and sound

• light and heat

• heat and solar

Heat is used to change a solid to its liquid state and a liquid to its gaseous state.

• true

• false

Mr. Victor has put up a solar panel on the roof of his house. What is its function and how will using a solar panel be beneficial to Mr. Victor?