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!

Practice this question and more.


What does the hydrosphere include?

  1. All the water on Earth.

  2. All the living organisms on Earth.

  3. The solid, outer layer of the Earth.

  4. The Earth's atmospheric gases.

The correct answer is: All the water on Earth.

The hydrosphere is the Earth's system of water, and it includes all the water on Earth such as oceans, lakes, rivers, and groundwater. Option B is incorrect because living organisms are included in the biosphere, not the hydrosphere. Option C is incorrect because the solid outer layer of the Earth is known as the lithosphere, not the hydrosphere. Option D is incorrect because the Earth's atmospheric gases are part of the atmosphere, not the hydrosphere.