EXAM 1 AST STUDY GUIDE UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question 1.
Light Year
ANSWER
the distance light travels in one year at the speed of light
Question 2.
Astronomical Unit (AU)
ANSWER
Distance from earth to sun
Question 3.
Planet
ANSWER
Ball of mass or matter with a size requirement
Question 4.
Parsec (PC)
ANSWER
3.26 lightyears
Question 5.
Moon
ANSWER
Ball of mass or matter that orbits a planet not a sun
1/6
, Question 6.
Star
ANSWER
Burning ball of gas (stinky)
’Sun is a mid-sized star. Most stars are smaller.
’Gas and dust form the stars at the edge of the clouds.
Question 7.
Galaxy
ANSWER
Large collection of stars and planets
Question 8.
Constellation
ANSWER
Unchanging cluster set of stars (imaginary shape) Ex. Orion, Sagittarius, Scorpius
Question 9.
Asterism
ANSWER
Unofficial constellations
Ex. Big Dipper
Question 10.
Flux (F)
ANSWER
Apparent Brightness
Question 11.
Luminosity (L)
ANSWER
Intrinsic brightness
2/6
QUESTIONS AND CORRECT ANSWERS
Question 1.
Light Year
ANSWER
the distance light travels in one year at the speed of light
Question 2.
Astronomical Unit (AU)
ANSWER
Distance from earth to sun
Question 3.
Planet
ANSWER
Ball of mass or matter with a size requirement
Question 4.
Parsec (PC)
ANSWER
3.26 lightyears
Question 5.
Moon
ANSWER
Ball of mass or matter that orbits a planet not a sun
1/6
, Question 6.
Star
ANSWER
Burning ball of gas (stinky)
’Sun is a mid-sized star. Most stars are smaller.
’Gas and dust form the stars at the edge of the clouds.
Question 7.
Galaxy
ANSWER
Large collection of stars and planets
Question 8.
Constellation
ANSWER
Unchanging cluster set of stars (imaginary shape) Ex. Orion, Sagittarius, Scorpius
Question 9.
Asterism
ANSWER
Unofficial constellations
Ex. Big Dipper
Question 10.
Flux (F)
ANSWER
Apparent Brightness
Question 11.
Luminosity (L)
ANSWER
Intrinsic brightness
2/6