This printable supports Next Generation Science Standards Disciplinary Core Idea ESS1A and NGSS 5-ESS1-1.

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The Sun's Brightness (Grade 5)

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The Sun's Brightness

It is safe to look directly at the Sun as long as you are wearing sunglasses.
  1. True
  2. False
All stars are the same distance from Earth.
  1. True
  2. False
The Sun looks so bright because it is located much                 Earth than other stars.
  1. closer to
  2. farther from
Why can we see the stars in the night sky?
  1. Stars produce their own light.
  2. Stars reflect light from the Sun.
The Sun is the                 to Earth.
  1. closest planet
  2. closest star
  3. farthest star
  4. farthest planet
The Sun is about                 million miles away from Earth.
  1. 80
  2. 83
  3. 93
  4. 73
Which best explains why the Sun appears brighter in the day than the stars appear at night?
  1. The Sun is much larger than Earth.
  2. The Sun is much larger than the other stars.
  3. The Sun is much hotter than the other stars.
  4. The Sun is much closer to Earth than the other stars.
Star A and Star B are identical. However, Star A looks dimmer than Star B. Which statement may explain why Star A seems dimmer than Star B?
  1. Star A is closer to the observer than Star B.
  2. Star B is closer to the observer than Star A.
Alpha Centauri is the next closest star system to our solar system. Imagine that you are able to travel to the Alpha Centauri system. From there you look back at our Sun.

Which statement describes how the Sun looks from your new location compared to how it looks from Earth?
  1. The Sun looks larger and brighter.
  2. The Sun looks smaller and brighter.
  3. The Sun looks larger and less bright.
  4. The Sun looks smaller and less bright.
Distances between objects in space are very large. Instead of measuring distance in miles or kilometers, astronomers use a measurement unit called an astronomical unit (AU). 1 AU equals the average distance from Earth to the Sun. Sirius is the brightest star in the night sky. It is located about 544,000 AU from Earth.

Which statement correctly compares the apparent brightness of Sirius and the Sun?
  1. Sirius looks brighter than the Sun because it is located closer to Earth.
  2. The Sun looks brighter than Sirius because it is located closer to Earth.

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