Earth as a System : Energy, Matter, and Life — Practice Quiz
CBSE · Class 9 · Science
Try a 4-question quiz on Earth as a System : Energy, Matter, and Life for CBSE Class 9 Science: tap an answer to check it and see why.
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Quick Quiz: Earth as a System : Energy, Matter, and Life
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Which Earth sphere includes solid rocks, soil, landforms, and the Earth's interior?
Which Earth sphere includes oceans, rivers, lakes, and groundwater?
Which Earth sphere includes ice, snow, glaciers, and polar ice caps?
Which Earth sphere is the air surrounding the Earth?
Sample Questions
Which Earth sphere includes all living organisms and their habitats?
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Biosphere
The biosphere includes all living organisms and the places where they live.
What is the main source of energy for life on Earth?
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The Sun
The Sun is the main source of energy on Earth and powers many natural processes.
What is the speed of light in vacuum?
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3×10^8 ms⁻¹
The speed of light in vacuum is 3×10^8 ms⁻¹.
Which type of electromagnetic waves are harmful because they have very high energy?
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Gamma rays and X-rays
Gamma rays and X-rays are high-frequency, short-wavelength waves with very high energy and can be harmful.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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