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Class 10 Physics · Chapter 12 · Test 2

Test 2: Cyclones (Details), Global Warming, Geothermal Activity and Radiation

MCQs

30 questions · 25 min · 30 marks

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Sample questions

The first 5 of 30. Try each one, then tap to see the answer.

  1. Question 1

    Which of the following gas contributes the most to global warming?

    • AOxygen
    • BCarbon dioxide
    • CNitrogen
    • DArgon
    Show answer

    Answer: B

    Carbon dioxide is a greenhouse gas that traps heat (Exercise A 21.4).

  2. Question 2

    A major cause of rising sea levels is:

    • Aincreased volcanic activity
    • Bthe Earth moving closer to the Sun
    • Cmelting glaciers and ice sheets
    • Ddecreased solar radiation
    Show answer

    Answer: C

    Melting glaciers and ice sheets raise sea levels (Exercise A 21.6).

  3. Question 3

    A significant source of background radiation is:

    • Aoxygen in the air
    • Bcosmic rays from space
    • Csound waves in the atmosphere
    • Dlight from the Sun
    Show answer

    Answer: B

    Cosmic rays are a source of background radiation (Exercise A 21.7).

  4. Question 4

    When warm moist air rises and condenses, heat is released into the surrounding air, which makes the air:

    • Aeven warmer so it rises even faster
    • Bcolder
    • Cheavier
    • Dstill
    Show answer

    Answer: A

    This cycle makes the cyclone stronger and helps it grow bigger.

  5. Question 5

    In the northern hemisphere the air in a cyclone spins:

    • Aanticlockwise
    • Bclockwise
    • Cstraight
    • Dupward only
    Show answer

    Answer: A

    This is due to the Coriolis effect.

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