Class 7 Science Chapter 7: Heat Transfer in Nature — practice questions with answers
Free practice for Class 7 Science, Chapter 7: Heat Transfer in Nature. Try the solved questions below, then take a free test with instant marking and explanations.
28 questions10 easy, 12 medium, 6 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Why is winter in Kerala warmer than in Gangtok, according to the grandfather?
- Kerala is closer to the equator and has a long coastline
- Kerala has more mountains
- Gangtok is near the sea
- Kerala has no Sun
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Answer: A. Kerala is closer to the equator and has a long coastline
Why: Closeness to the equator and the sea makes Kerala warmer and humid. [p.89]
Why: Closeness to the equator and the sea makes Kerala warmer and humid. [p.89]
Q2. Wax-fixed pins on a metal strip heated at one end fall one by one, nearest pin first. What does this show?
- Heat travels along the strip from the hot end to the cold end
- All parts heat at once
- Wax melts by itself
- Pins are magnetic
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Answer: A. Heat travels along the strip from the hot end to the cold end
Why: Heat moves along the strip, melting the wax near each pin in turn. [p.90–91]
Why: Heat moves along the strip, melting the wax near each pin in turn. [p.90–91]
Q3. Heat transfer from the hotter part of an object to the colder part, without the particles moving from their places, is called ______.
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Answer: conduction
Why: In conduction, particles pass heat to neighbours but do not move. [p.91]
Why: In conduction, particles pass heat to neighbours but do not move. [p.91]
Q4. A paper cup hung above a candle rises. Why?
- Air around the flame heats, expands, becomes lighter and rises
- The candle pushes it with light
- The thread shrinks
- Cold air rises
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Answer: A. Air around the flame heats, expands, becomes lighter and rises
Why: Warm air expands, occupies more space and rises. [p.93]
Why: Warm air expands, occupies more space and rises. [p.93]
Q5. Heat transfer by the actual movement of particles of a liquid or gas is called ______.
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Answer: convection
Why: In convection the particles themselves move. [p.94, p.102]
Why: In convection the particles themselves move. [p.94, p.102]
Q6. Soil and water are heated together for 20 minutes. Which gets hotter faster?
- Soil
- Water
- Both the same
- Neither
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Answer: A. Soil
Why: The soil’s temperature rises more than water’s — soil heats up faster. [p.95]
Why: The soil’s temperature rises more than water’s — soil heats up faster. [p.95]
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Frequently asked questions
How many practice questions are there for Class 7 Science Chapter 7: Heat Transfer in Nature?
28 questions (10 easy, 12 medium, 6 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 7 Science syllabus, used by CBSE and many state boards.