section 3

Question 1

refracting telescope

pros and cons?

Answer 1

uses lenses to refract (bend) light

easy to use and portable
BUT
awkward to look through and limited in size

Question 2

reflecting telescope

pros and cons

Answer 2

uses mirrors to reflect light

high quality and no distortion
BUT
hard to use and heavy

Question 3

hubble space telescope

pros?

Answer 3

reflecting telescope

in space; weather, pollution doesnt interfere
no atmosphere that gets in the way

Question 4

wavelength

Answer 4

distance from crest of one wave to crest of the next

crest = top

Question 5

frequency

Answer 5

number of waves that pass a single point in one second

Question 6

as wavelength inscreases, what would happen to frequency

Answer 6

DECREASE; bigger the wave, more time taken for one to pass a point
- fewer will pass by

Question 7

radio telescopes

pros?

Answer 7

detect radio waves emmited by objects in space

not affected by weather
not distorted by clouds, atmosphere, pollution
detected day and night

Question 8

spectrometry

how to tell difference between absorbtion or emission spectrums

Answer 8

studying and measuring a spectrum to find out what a star is composed of

absorbtion: bar is colored, lines are black
emission: lines are colors, bar is black

Question 9

doppler effect

Answer 9

the increase (or decrease) in frequency as the source and observer move towards (or away from) each other

wavelength increases [frequency decreases] when the source is away from observer

frequency increases and wavelength decreases when source is close to observer

Question 10

red shifted

Answer 10

moving away
- bigger wavelength

Question 11

blue shifted

Answer 11

moving towards
- smaller wavelength