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WorksheetsLight Years and AU's (Astronomical Units)
Total questions: 10
Worksheet time: 7mins
What is Astronomical Unit?
The average distance between the Sun and the Moon
The average distance between Neptune and the Sun
The average distance between Earth and the Sun
The average distance between Earth and Moon
What is Light Year?
The distance travelled by light in a second
The distance travelled by light in a minute
The distance travelled by light in a year
The distance travelled by light in a decade
Which distance is larger: 1 astronomical unit or 1 light-year?
1 AU
1 LY
What is the time taken for the light to travel between the Sun and Earth?
2 minutes
4 minutes
8 minutes
12 minutes
Why do we use light years and astronomical units to measure distances in space?
Scientists want to sound smart.
Hubble discovered these units and wanted to use them.
Space is too small to use km, it wouldn't make sense.
Space is too big, vast, enormous to use traditional units, like miles or kilometres.
If an object is 7.4 light years away from Earth, what does this tell you?
It would take 7.4 minutes for the light to get to Earth.
Traveling at the speed of light it takes 7.4 yrs to get to the earth.
The object is very close to Earth.
It would take 7.4 seconds for the light to get to earth.
A.U. (astronomical units) are used to measure distances between _?_.
stars
planets
galaxies
solar systems
Which unit of measure would be used to measure the distance from our solar system to the center of the MIlky Way?
ft
ly
AU
km
