Light Flashcards
1
Q
Name the two sources of light.
A
- Artificial light
2. Natural light
2
Q
What is artificial light?
A
Artificial light are light that are made by man. They are also called man-made light.
3
Q
Give examples of artificial light.
A
- Candle
- Fire
- Lamp
- Bulb
- Tube light
4
Q
What is natural light?
A
Natural light are light that are made by God.
5
Q
Give examples of natural light.
A
- Sun
- Stars
- Firefly
- Glow worm
- Lightening
6
Q
What is a shadow?
A
A shadow is an area of darkness.
7
Q
When are shadows long?
A
In the morning and in the evening.
8
Q
When are shadows short?
A
At noon
9
Q
How are shadows formed?
A
Shadows are formed when light is blocked by an object.
10
Q
How can light harm us?
A
- Looking directly at the sun can harm your eyes.
- Using dim light can affect your eyes.
- Shining a torch directly to your eyes can affect you.
- Candles can burn our eyes.
- The rays of the sun can harm our skin.
- Watching television for a long time is not good for our eyes.
11
Q
How can you protect yourself from harmful light?
A
- Do not look directly at the sun.
- Do not watch television in the dark.
- Do not touch the bulb when the light is on.
- Use sunscreen to protect the skin from the sun.
