1.4 spectra

Question 1

what is irradiance a measure of ?

Answer 1

it is the measure of energy incident per unit surface area per second.

Question 2

what happens when a excited electron makes a transition to a lower energy level ?

Answer 2

it loses some (if not all ) of its energy which is converted into light energy.

Question 3

what is a continuous spectra ?

Answer 3

all of the colours in the visible spectrum.

Question 4

what is a line spectra?

Answer 4

specific, well defined lines of a certain colour are presented.

Question 5

if an electron has a small transition where a small amount of energy is produced dose it have a smaller or greater wavelength than a large transition that creates a large amount of energy?

Answer 5

greater wavelength.

Question 6

what is an absorption spectra ?

Answer 6

when am electron starts of at a lower energy level and gains energy from a photon which of it is enough causes an upwards transition.

i.e the electron will absorb the energy and move up.