Chapter 5 - Light Energy

Question 1

Transverse Wave

Answer 1

a wave in which the vibrating element moves in a direction perpendicular to the direction of advance of the wave.

Question 2

Electromagnetic Spectrum

Answer 2

Made up of the types of electro magnetic radiation. The higher the frequency, the more energy. Radio, microwaves, infrared, visible, UV, xray, and gamma rays.

Question 3

Visible Spectrum

Answer 3

Splitting of white light into colours is called dispersion. (red lowest with energy, and purple highest.)

Question 4

Absorption

Answer 4

An object will absorb whatever color it isn’t, and will reflect whatever color it is.

Question 5

Reflection

Answer 5

Light is reflected off at the same angle as it hits the surface at.

Question 6

Convex Mirrors

Answer 6

Bulge outwards and show small images in a wide view.

Question 7

Concave mirrors

Answer 7

Cave inwards and magnify objects at a close distance.

Question 8

Refraction

Answer 8

light slows down when passing through glass, causing it to bend.

Question 9

Convex lens

Answer 9

buldge in the centre and bends light together , magnifying objects. Long sighted

Question 10

Concave lens

Answer 10

dip inwards, spreads light apart, allowing it to be viewed on a larger scale. Short sighted