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WorksheetsParsec, Light Year
Total questions: 9
Worksheet time: 5mins
Which unit of measurement is used to measure distances within our solar system?
inches
kilometers
miles
Astronomical units
The distance light can travel in one year is ______________
15,000 kilometers
1 light-year
15 Astronomical Units
6,000 miles
What unit of measurement is used to calculate distance in our universe?
astronomical units
kilometers
light years
parsecs
True or False: The universe is expanding.
True
False
What is a light year?
It is the LUMINOSITY of the Sun compared to other stars.
Like a regular year, only with less calories.
It is the DISTANCE light travels in one year.
It is the TIME it takes light from the Sun to get to the Earth.
Astronomers use the light-year to describe the relationship between objects in space. For example, the Andromeda galaxy is 2.5 million light year from Earth. Which of the following units is most similar to the light-year?
gram
second
kilometer
degrees Celsius
A light-year is the distance that light travels in one year. If a star is 3 light years from Earth, how long does it take light from that star to reach Earth?
3 min
3 hours
3 years
3 light years
The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Why do the sun and moon appear to be the same size when viewed from Earth?
The moon is much hotter than the sun.
The moon is much denser than the sun.
The moon is much brighter than the sun.
The moon is much closer to Earth than the sun.
Which object is closest to Earth?
Barnard’s Star
Planet Neptune
Andromeda galaxy
Triangulum galaxy
