light oh god oh no

Question 1

light

Answer 1

transverse electromagnetic wave dont need medium

Question 2

electro-magnetic spectrum

Answer 2

electrical and magnetic wavelengths exist external environment. Human eyes most sensitive visible light spectrum 380-750 nanometres.

Question 3

characteristics light wave

Answer 3

• two planes of motion (electric field + magnetic field)
• electric field grows, magnetic field grows –> generates power
  (other characteristics are seen in the diagram)

Question 4

frequency amplitude colour brightness

Answer 4

hi freq = type of colour

hi amp = brightness

Question 5

types of obstacles on light

Answer 5

Transparent - e/m waves pass unchanged (slight reflection)
Translucent - e/m waves pass are disturbed (slight reflection)
Opaque - absorbed energy (slight reflection)

Question 6

effect medium on light

Answer 6

• denser = slower changes direction

Question 7

laws of reflect

Answer 7

reflect = shine back. wave obstacle (esp smooth) will reflect. occurs at same corresponding angle

Question 8

law of reflection - identify, incident ray, reflected ray, normal, angle of incidence, angle of reflection

Answer 8

see image

Question 9

refraction

Answer 9

wave enters different medium light new medium

Question 10

transverse waves move

Answer 10

up and down