Ontario Grade 9 Science Class Practice Exam

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What is a constellation?

  1. A single star

  2. A planet in our solar system

  3. A group of planets

  4. A group of stars that forms a pattern in the sky

The correct answer is: A group of stars that forms a pattern in the sky

A constellation is a group of stars that forms a pattern in the sky. Option A, a single star, is incorrect because a single star cannot form a pattern in the sky. Option B, a planet in our solar system, is also incorrect because planets do not form patterns in the sky that are recognized as constellations. Option C, a group of planets, is incorrect for the same reason as option B. Therefore, the only correct option is option D, a group of stars that forms a pattern in the sky.

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