Daily Olympiad: Social Science - Major Domains Earth [20260511]

Challenge yourself with today's CBSE practice! This test covers 'Major Domains Earth' for Social Science (Grade 6). Level: Easy | Duration: 30 mins.

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1. Which of the following is NOT one of the five major domains of the Earth?

Solution
Correct: D
The five major domains are Lithosphere, Hydrosphere, Atmosphere, Biosphere, and Cryosphere. Electrosphere is not a recognized domain.

2. The largest ocean on Earth is the:

Solution
Correct: C
The Pacific Ocean is the largest and deepest ocean, covering more area than all the other oceans combined.

3. Which layer of the atmosphere contains the ozone layer?

Solution
Correct: B
The ozone layer is located in the stratosphere, protecting life by absorbing most of the Sun's harmful UV radiation.

4. Which gas makes up about 78% of the atmosphere?

Solution
Correct: C
Nitrogen constitutes approximately 78% of Earth's atmosphere, followed by oxygen at 21%.

5. The portion of Earth where life exists is called the:

Solution
Correct: C
The biosphere includes all living organisms and their interactions with the lithosphere, hydrosphere, and atmosphere.

6. Which of the following is a non-renewable natural resource?

Solution
Correct: C
Fossil fuels like coal and oil are non-renewable as they take millions of years to form and are depleted faster than they can be replenished.

7. The hydrosphere includes:

Solution
Correct: A
The hydrosphere comprises all water bodies like oceans, rivers, lakes, groundwater, and even water vapor.

8. The coldest region of the atmosphere is the:

Solution
Correct: C
The mesosphere is the coldest layer, with temperatures decreasing as altitude increases.

9. The rigid outer layer of the Earth is called the:

Solution
Correct: D
The lithosphere includes the crust and the uppermost part of the mantle, forming a rigid outer shell.

10. Which domain acts as a protective blanket for Earth?

Solution
Correct: C
The atmosphere shields the Earth from extreme temperature variations and harmful solar radiation.

11. The highest mountain peak in the world is:

Solution
Correct: C
Mount Everest, located in the Himalayas, is the tallest mountain above sea level.

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