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Winds, Storms and Cyclones — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceWinds, Storms and Cyclones1 Mark
MCQ
When a fluid is heated, it expands and becomes:
  • ✓
    Lighter
  • B
    Heavier
  • C
    No change
  • D
    None of these
✓

Answer

Correct option: A.
Lighter
On heating, the fluid expands and occupies more space. When the same amount of fluid occupies more space, it becomes lighter. The warmer fluid is, therefore, lighter than the colder fluid.

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