What is light?
Light is a form of energy.
Why do we need light?
We need light to see things around us.
What are objects that produce their own light called?
They are called luminous objects (light sources).
Is the Sun a natural or artificial light source?
The Sun is a natural light source.
What is our main source of light?
The Sun.
Name two natural light sources.
The Sun and stars. (Lightning is also correct.)
Can fireflies produce their own light?
Yes, they can.
Are candles natural or artificial light sources?
Artificial light sources.
Name one artificial light source that uses electricity.
A light bulb. (Traffic light or street lamp are also correct.)
Do most objects produce their own light?
No, they do not.
What do we call objects that do not produce their own light?
Non-luminous objects.
Is the Moon luminous or non-luminous?
Non-luminous.
Can we see non-luminous objects in the dark?
No, we cannot.
How does light travel?
Light travels in a straight line.
Why can we see a luminous object?
Because its light enters our eyes.
What happens when light hits a non-luminous object?
The light is reflected.
