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Sources of Heat & Temperature — Homi Bhabha Class 6 Physics MCQs with Solutions
Free Homi Bhabha Class 6 Physics Sources of Heat & Temperature MCQs with step-by-step solutions (10 questions). Part of Heat. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Sources of Heat & Temperature · easy · theory
The main natural source of heat and light for the Earth is:
A. The Moon
B. The Sun ✓ Correct
C. An electric bulb
D. A gas stove
Solution: The Sun is the biggest natural source of heat and light for the Earth. The Moon only reflects light, while bulbs and stoves are man-made sources.
Q2 — Sources of Heat & Temperature · easy · theory
Heat is a form of:
A. matter
B. air
C. energy ✓ Correct
D. water
Solution: Heat is a form of energy. It can move from one object to another and can make things warmer.
Q3 — Sources of Heat & Temperature · easy · theory
Temperature is a measure of:
A. how long an object is
B. what colour an object is
C. how heavy an object is
D. how hot or cold an object is ✓ Correct
Solution: Temperature tells us how hot or cold an object is. It does not tell us the weight, length or colour.
Q4 — Sources of Heat & Temperature · easy · theory
Which of these is a man-made (artificial) source of heat?
A. A gas stove ✓ Correct
B. The Sun
C. A hot spring
D. Lightning
Solution: A gas stove is made by people, so it is a man-made source of heat. The Sun, hot springs and lightning are natural sources.
Q5 — Sources of Heat & Temperature · medium · theory
When you rub your hands together quickly, they become warm. This heat is produced by:
A. electricity
B. wind
C. sunlight
D. friction ✓ Correct
Solution: Rubbing two surfaces together causes friction, and friction produces heat. That is why your hands feel warm.
Q6 — Sources of Heat & Temperature · medium · theory
Which of the following is NOT a source of heat?
A. A burning candle
B. A lit matchstick
C. The Sun
D. A block of ice ✓ Correct
Solution: A block of ice is cold and does not give out heat. A candle, a matchstick and the Sun all give out heat.
Q7 — Sources of Heat & Temperature · medium · theory
Heat always flows from:
A. objects of the same temperature
B. a colder object to a hotter object
C. a hotter object to a colder object ✓ Correct
D. a lighter object to a heavier object
Solution: Heat naturally moves from a hotter object to a colder one until both reach the same temperature.
Q8 — Sources of Heat & Temperature · medium · theory
Burning of fuels such as wood, coal and gas gives us:
A. heat and light ✓ Correct
B. only cold
C. only sound
D. only electricity
Solution: When fuels burn, the stored energy is released as heat and light. That is why a fire feels warm and looks bright.
Q9 — Sources of Heat & Temperature · hard · theory
A cup of hot tea slowly becomes cold when left on a table because:
A. cold from the air flows into the tea
B. the table makes new cold
C. heat flows from the hot tea to the cooler surroundings ✓ Correct
D. the tea creates coldness on its own
Solution: Heat always moves from hot to cold. The hot tea loses heat to the cooler air and table around it, so it cools down. "Cold" does not flow into things.
Q10 — Sources of Heat & Temperature · hard · theory
A metal spoon at 20 °C is placed against a metal block at 50 °C. Heat will flow:
A. from the 50 °C block to the 20 °C spoon ✓ Correct
B. from the 20 °C spoon to the 50 °C block
C. not at all
D. in both directions equally
Solution: Heat flows from the hotter object to the colder one. The 50 °C block is hotter, so heat moves from the block to the 20 °C spoon.