Lesson 12: Visible Light

Question 1

True or False

Each colour in the visible light spectrum have the same frequencies and wavelengths.

Answer 1

• FALSE!
• Each colour within The Visible Light Spectrum has its own narrow band of frequency/ wavelength.

Question 2

What is specular reflection?

Answer 2

• Specular reflection is reflection from a smooth surface in a single direction

DIAGRAM OF IT IN POLLY POCKET.

Question 3

What is diffuse reflection?

Answer 3

• Diffuse reflection is reflection from a rough surface (which causes scattering) - this is called diffuse reflection

DIAGRAM OF IT IN POLLY POCKET

Question 4

True or False

Objects that TRANSMITT light can be: opaque, transparent or translucent .

Answer 4

• False.
• Objects that trasmitt light can ONLY be transparent/ translucent.

Question 5

How do colour filters work?

Answer 5

• Colour filters work by absorbing certain wavelengths/ colours and trasmitting other wavelengths/ colours.

Question 6

Why will red light be seen when you pass white light through a red filter?

Answer 6

• The red filter absorbs all colours/ wavelengths of visible light - other than red.
• So, only red light is transmitted through the filter.

Question 7

When will an opaque object appear WHITE when shining white light on it?

Answer 7

• On opaque object will appear white is all the wavelengths/ colours are reflected equally.