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Grade 7 Exam  >  Grade 7 Test  >  Science  >  Test: The Earth and Its atmosphere - Grade 7 MCQ

The Earth and Its atmosphere - Grade 7 Science Free MCQ Test with solutions


MCQ Practice Test & Solutions: Test: The Earth and Its atmosphere (10 Questions)

You can prepare effectively for Grade 7 Science for Grade 7 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: The Earth and Its atmosphere". These 10 questions have been designed by the experts with the latest curriculum of Grade 7 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 10

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Test: The Earth and Its atmosphere - Question 1
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What is the primary gas in Earth's atmosphere?

Detailed Solution: Question 1

Nitrogen makes up about 78% of Earth's atmosphere, making it the primary gas.

Test: The Earth and Its atmosphere - Question 2
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Which layer of the atmosphere is closest to the Earth's surface?

Detailed Solution: Question 2

The troposphere is the lowest layer where weather and most of Earth's clouds occur.

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Test: The Earth and Its atmosphere - Question 3
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What causes the greenhouse effect in the atmosphere?

Detailed Solution: Question 3

Greenhouse gases like carbon dioxide trap heat in the atmosphere, causing the greenhouse effect.

Test: The Earth and Its atmosphere - Question 4
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Which gas protects living organisms from harmful solar radiation?

Detailed Solution: Question 4

Ozone in the stratosphere absorbs and shields the Earth from most of the sun's harmful ultraviolet radiation.

Test: The Earth and Its atmosphere - Question 5
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What is the process by which water moves from Earth's surface to the atmosphere and back?

Detailed Solution: Question 5

Precipitation involves the movement of water in its various forms between the atmosphere and Earth's surface.

Test: The Earth and Its atmosphere - Question 6
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Which layer of the atmosphere contains the ozone layer?

Detailed Solution: Question 6

The ozone layer is located in the stratosphere and plays a crucial role in absorbing ultraviolet radiation.

Test: The Earth and Its atmosphere - Question 7
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What causes winds in the atmosphere?

Detailed Solution: Question 7

Differential heating of Earth's surface by the sun creates areas of high and low pressure, driving atmospheric circulation and winds.

Test: The Earth and Its atmosphere - Question 8
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Which layer of the atmosphere is characterized by extremely low temperatures?

Detailed Solution: Question 8

The mesosphere is the coldest layer of the atmosphere, with temperatures dropping as low as -90°C (-130°F).

Test: The Earth and Its atmosphere - Question 9
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What is the layer of charged particles that surrounds Earth called?

Detailed Solution: Question 9

The ionosphere contains ions and free electrons and plays a key role in radio communication by reflecting radio waves back to Earth.

Test: The Earth and Its atmosphere - Question 10
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What causes the phenomenon known as the Northern Lights?

Detailed Solution: Question 10

The Northern Lights (Aurora Borealis) occur when charged particles from the sun interact with Earth's magnetic field and atmosphere, causing beautiful light displays near the poles.

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About this Grade 7 Practice Test

This test contains 10 MCQs on The Earth and Its atmosphere with detailed solutions for each question. It is part of the Science for Grade 7 course on EduRev, designed to align with the current Grade 7 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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If you found this The Earth and Its atmosphere MCQ Test helpful, you can further enhance your Grade 7 preparation with in-depth courses on EduRev, for all the subjects and topics available in Science for Grade 7 course. The course offers:
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