Ontario Grade 9 Science Class Practice Exam

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Master Grade 9 Science with our comprehensive practice exam. Test your knowledge, identify weak areas, and boost your confidence for academic success.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is a meteoroid?

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.
A large cloud of gas and dust in interstellar space.
The average distance between the sun and an orbiting object.
The apparent backward motion of the planets relative to the stars.

The correct answer is: A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.

A meteoroid is a small body that travels through space and can become a meteor when it enters the Earth's atmosphere. This sets it apart from option B, which described a large cloud of gas and dust in interstellar space, and option C, which describes a distance measurement between objects in space rather than a physical object itself. Option D refers to retrograde motion, which is a visual phenomenon and not a physical object.