Earth as a System:Energy, Matter, and Life class 9 online test

Class 9 science

General Instructions

  • Your test contains multiple-choice questions with only one answer-type question. There are a total of 10 questions
  • This is a 20 min test. Please make sure you complete it in the stipulated time
  • You can finish this test any time using the 'Submit' button.
1. Which part of solar radiation is mainly responsible for photosynthesis?
2. Which layer contains the ozone layer?
3. Which gas makes up the largest proportion of Earth’s atmosphere?
4. Which gas is mainly responsible for global warming?
5. Cryosphere refers to
6. Ocean currents are mainly driven by
7. If the Earth’s albedo suddenly increases, what would most likely happen?
8. Nearly all real-world weather phenomena, such as clouds, rain, and storms, occur in which layer of the atmosphere?
9. Which bacteria convert ammonia into nitrite?
10. Farmers in hilly regions benefit from mountain breezes because __________.

 

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