Grade 5 · Science · Earth science

5th Grade Stars and Apparent Brightness worksheets

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Stars and Apparent Brightness

Grade 5 Science Worksheet

NameDate

Both stars give off the same amount of light. Circle the star that looks brighter from Earth.

1.
Star A: 12 light-years away. Star B: 100 light-years away.
- Star A
- Star B
2.
Star A: 400 light-years away. Star B: 800 light-years away.
- Star A
- Star B
3.
Star A: 12 light-years away. Star B: 200 light-years away.
- Star A
- Star B
4.
Star A: 20 light-years away. Star B: 40 light-years away.
- Star A
- Star B
5.
Star A: 12 light-years away. Star B: 4 light-years away.
- Star A
- Star B
6.
Star A: 20 light-years away. Star B: 400 light-years away.
- Star A
- Star B
7.
Star A: 60 light-years away. Star B: 12 light-years away.
- Star A
- Star B
8.
Star A: 40 light-years away. Star B: 4 light-years away.
- Star A
- Star B
9.
Star A: 100 light-years away. Star B: 400 light-years away.
- Star A
- Star B
10.
Star A: 12 light-years away. Star B: 60 light-years away.
- Star A
- Star B

5th Grade Stars and Apparent Brightness worksheet 1 – printable PDF — Download PDF: 1 2 3 4 5 6

About this worksheet

Stars give off very different amounts of light, but how bright a star looks from Earth, its apparent brightness, also depends on how far away it is. A star that is closer looks brighter than an identical star that is farther away, just as a flashlight looks brighter when it is near. The Sun looks brightest of all because it is the closest star.

On this fifth grade sheet each of ten items gives two stars that give off exactly the same amount of light and tells how far away each one is, and the child circles the star that looks brighter from Earth. Each version has different stars, and the answer key gives every answer.