Electromagnetic Radiation

Define the term "wave motion"

Define "transverse wave"

Define "longitudinal wave"

Define "frequency"

Define "wavelength"

Define "electromagnetic radiation"

Define "electromagnetic waves"

Define "electromagnetic spectrum"

What are two sources of white light?

What colours does white light contain of?

Why are red, green, and blue primary colours?

When white light is shone upon a magenta filter, what colours pass through?

Define the term "refraction"

List the electromagnetic spectrum, from shortest to longest wavelength.

What is the unit used to measure frequency?

What effect causes skies to be blue?

How do you know that white light consists of different colours?

Why does a red surface look red when white light is falling on it?

Why is it so difficult to identify a car by its colour at night?

Outline the main differences between a transverse wave and a longitudinal wave.

Where can gamma rays be used?

Where can X-Rays be used?

Where can UV rays be used?

What is visible light?

Where can infrared light be used?

Where can microwaves be used?

Where can radio waves be used?

Define the term "visible spectrum"

Define "dispersion"

What colour has the longest wavelength?

What colour has the shortest wavelength?

What are the primary colours?

What are the secondary colours?

What is a colour filter?

What are the three subtractive primary colours?

When cyan and magenta paint/ink are mixed, what colour does it make?

When cyan and yellow paint/ink are mixed, what colour does it make?

When yellow and magenta paint/ink are mixed, what colour does it make?

When red and green light are mixed, what colour does it make?

When red and blue light are mixed, what colour does it make?

When blue and green light are mixed, what colour does it make?

What are gamma rays?

What are X-Rays?

What are Ultraviolet (UV) rays?

What is visible light?

What is infrared radiation/rays?

What are microwaves?

What are radio waves?

Define the term "analogue signal"

Define the term "digital signal"

What does "remote sensing" mean?

What does "active remote sensing" mean?

What does the term "passive remote sensing" mean?

What does FDM stand for?

What is FDM (frequency division multiplexing)?

What does TDM stand for?

What is TDM (time division multiplexing)?

Define the term "bandwidth"

What is an "optical fibre"?