essential cosmic perspective quiz chapter 6

Question 1

Telescopes ______us to see _____ _____ better than with the unaided eye by making them appear bigger_____and clearer

Answer 1

1. enable
2. distant
3. object
4. brighter

Question 2

the first _____ were _____ telescoped which use the ____ability of lenses to focus _____

Answer 2

1. telescopes
2. refractive
3. refractive
4. light

Question 3

when light passes from one ____into another(from ____ to ____at an angle then it _____: it changes speed and _____

Answer 3

1. medium
2. air
3. glass
4. refracts
5. direction

Question 4

parallel light passing through a _______ lens will come to a focus at the _____ _____. An extended object will form an extended image at the _____ ______

Answer 4

1. complex
2. focal point
3. focal plane

Question 5

blue light is ______ more than red light producing _____ and the rainbow as sunlight refracts and ____ in water.

Answer 5

1. refrracted
2. spectra
3. reflects

Question 6

however this produces ________ aberration in _________. unwanted fuzzy rainbow colored halos around images.

Answer 6

1. chromatic

2. refractors

Question 7

chromatic aberation can be ________ by using extra lenses

Answer 7

1. corrected

2.

Question 8

becuase light has to _____ through the lens in a _________, other problems are the need for a defect free interior, the _________ of light and _______due to sagging and _________

Answer 8

1. pass
2. refractor
3. absorbotion
4. distortion
   5, heavy lens

Question 9

the limitations of _____ can be largely avoided by using a mirror as the principle optical piece in the telescope

Answer 9

1. refractor

Question 10

_______ use the reflective ability of mirrors to focus light

Answer 10

1. reflectors

Question 11

when _____ passes from _____ to another from _____ to _____ then some of it reflects with i equal to r

Answer 11

1. passes
2. medium
3. air
4. silver