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.

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What are nebulas?

Regions in space where stars explode at the end of their lives.
Small bodies that can become meteors.
Devices used to measure electric current.
The smallest unit of an element.

The correct answer is: Regions in space where stars explode at the end of their lives.

Nebulas are regions in space where stars explode at the end of their lives, making option A the correct response. Option B is incorrect because meteors are formed from small rocks and debris entering Earth's atmosphere, not from nebulas. Option C is incorrect because nebulas have nothing to do with devices used to measure electric current. Option D is incorrect because nebulas are not the smallest unit of an element, they are large regions in space.