Light

Question 1

Definition of light

Answer 1

Light – radiation of packets of energy, quanta or photons –

Intensity - photons/ area time; wavelength - color

Question 2

angle of incidence

Answer 2

Changes how the light reflects, changes depending on time of day and latitude.

Question 3

Albedo

Answer 3

Reflection of light back into space

more from snow and deserts

Question 4

Absorption vs scatter

Answer 4

Absorption - conversion to heat; greatest for longer
wavelengths of light (red)

Scattering – random bouncing off of particles; greatest
for shorter wavelengths of light (violet, blue

Question 5

How must light can’t make it past a meter

Answer 5

50%

Question 6

Extinction coefficient

Answer 6

Fraction (%) of light absorbed per meter of water.

Question 7

Light vs Ice

Answer 7

Black ice blocks little light
bubbled ice blocks some, snow blocks more

winter can cause hypoxia due to lack of light for photosynthesis