Chapter 10.5- Light Energy

Question 1

Luminous

Answer 1

Something that realises it’s own light.

Question 2

Incandescent

Answer 2

Describes objects that emit light when they are hot.

Question 3

Bioluminescent

Answer 3

Release light energy by living things.

Question 4

Non-luminous

Answer 4

Opposite of luminous, it doesn’t emit their own light but can be seen by reflected light.

Question 5

Scattered

Answer 5

Describes light sent in many directions by small particles within a substance.

Question 6

Visible spectrum

Answer 6

All sort of colours that combine to make up white light, they are separated in rainbows.

Question 7

Dispersion

Answer 7

Separation of the colours that make up white light. Each colour is bent differently when it enters or leaves a glass prism.

Question 8

Electromagnetic radiation

Answer 8

The radiant energy such as radio waves, infrared,visible light, x-rays and gamma rays released by magnetic or electric fields.

Question 9

Electromagnetic spectrum

Answer 9

Complete range of wavelengths of energy radiated as electric and magnetic fields.

Question 10

Radio waves

Answer 10

Low energy electromagnetic waves with a much lower frequency and longer wavelength than visible light.