Light is a form of electromagnetic radiation that travels faster than sound at 300,000,000 m/s in straight lines or transverse waves. It can be reflected in either a smooth specular reflection from calm water or a diffuse uneven reflection from rippled water. Light is emitted from luminous objects or reflected from objects that do not emit light themselves.

3. Light is a form of electromagnetic (EM) radiation
energy that travels in transverse waves or
straight lines.

4. Light travels faster than sound at a
speed of 300, 000, 000 m/s.
c = 300, 000, 000 m/s.

5. Light travels faster than sound.
During a thunderstorm, you will notice that lightning
strikes first.
This is then followed by thunder.

6. Light travels in straight lines.
To demonstrate this property, just close your eyes.
Did you realise that you could not see any light?

7. There are seven different types of EM waves.

8. Increasing frequency

9. Each form of light travels at the same speed in a
vacuum.

11. Artificial sourceNatural source

12. Smooth surfaces like the calm water
allows light to be reflected evenly.
This is known as a specular reflection.

13. Rough surfaces like the rippled and paddled
water allows light to be reflected unevenly.
This is known as a diffuse reflection.

14. Objects that emits (or
produces) their own light.

15. Objects that reflects light.
Do not emit any light.

17. Light is emitted from
luminous objects.
Light hits an object
and bounces off.
Our eyes receives the
light and is focused
on the retina.

18. Visible light is composed of 7 colours of different
wavelengths and frequencies.

19. When light hits the banana, all colours except for
yellow will be absorbed.

20. The colour yellow will be reflected and received by the
retina in the eye to be interpreted.

21. Objects that allow all light to go through.

22. Objects that allows some
light to pass through.

23. Objects that do not allow
light to pass through.

24. Transparent
• Glass
Translucent
• Ice
Opaque
• Straw
• Cutlery