Units 1
The best unit to measure meteoroids in:
meters
A light-year is a unit of
distance.
How many km in an AU?
149,600,000 km
How many meters would the Earth be scaled to if 1 m = 1 km? (Earth diameter 12,750 km)
12,750 m
The best unit to measure the diameter of a moon in:
kilometers
How far away is the closest star to Earth (besides the Sun)?
4.2 light years
How many km from the Sun is an asteroid spotted at 36.5 AU?
5,460,400,000 km
Peter creates a scale of the solar system on a 120 m field. If we use 120 m = 50 AU, how far should he stand to represent an asteroid 4.56 AU away?
10.94 m
What is an Astronomical Unit (AU)?
The average distance between the Sun and the Earth.
Approximately how far is the farthest/oldest galaxy we have observed?
9.8 billion parsecs
How many ly is 500,000 AU?
7.91 ly
Elise wants to represent the distance between Beaumont and Houston on a scaled map. If Beaumont is 78 miles from Houston, how far away should Elise draw them if 8 mi = 1 cm on the map?
9.75 cm
Rigel has a radius of:
55 million km
Parsecs are based on a complex system involving:
angles
How many light years is 200 parsecs?
652 ly
If 50 AU = 75 m, how far away would Eris be scaled down? (96.3 AU)
144 m
How many AU per parsec?
206,166 AU
What unit would be best to write 4x10^-10 AU in?
meters
How many miles in a light year? (1 mi = 1.609 km)
5.88x10^12 mi
Hannah creates a scale of the solar system on a 150 ft field. If we use 150 ft = 50 AU, how far should she stand to represent Mars at 1.5 AU? Answer in meters or feet. (1 m = 3.28 ft)
1.37 m, 4.5 ft