Air is a bad conductor of heat.
Question types
Heat question types
68 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
68
Questions
8
Question groups
5
Question types
01
Write True or False, correct and rewrite the false statements.
10 Q→02Answer the following questions:[1 M]
1 Q→03Fill in the blanks
20 Q→04Give scientific reasons:
13 Q→05Answer the following questions: [2 M]
7 Q→06Answer the following questions:[3 M]
6 Q→07Do as instructed[4M]
9 Q→08Match the following.
2 Q→Sample Questions
Heat questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
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Every warm substance continuously emits heat in all directions around itself.
A convection current always travels down wards.
Hot water is heavier than cold water.
During conduction, particles of the conductor leave their original place.
What will absorb heat?
Steel spoon, wooden board, glass vessel, iron griddle (lava), glass, wooden spoon, plastic plate, soil, water, wax.
Steel spoon, wooden board, glass vessel, iron griddle (lava), glass, wooden spoon, plastic plate, soil, water, wax.
Neither conduction nor convection of the heat occurs in thermos flask due to the ……………… .
………………. made first thermos flask in 1892.
Copper is a better ………… of heat than …………. .
Substances through which heat travels very slowly are called ………… of heat.
Substances through which heat travels easily and quickly are called …………… .
Draw and explain about the Thermos flask or Dewar flask.
Write the difference between Conduction, Convection and Radiation.
Why is mercury used in a thermometer?
what is mailed infrared camera? Write its uses.
Explain the structure and functioning of thermometer containers-
Why hot substance does not remain as hot after two or three hours?
Why is mercury or alcohol used in a thermometer?
Why is there a gap at the joints of rails and of cement concrete bridges?
Why do we use white clothes in summer and dark or black clothes in winter?
Why do we wear woollen clothes in winter?
Why are heaters fitted near the floor and air conditioners near the ceiling of a room?
Why is the outer coat of the penguins of Antarctica black?
Explain which mode of heat transfer causes sea breezes and land breezes?
What are the modes of heat transfer?
Why are the houses in Rajasthan painted white?
Observe the diagram and answer the given questions below it.
1.Label parts 1 – 4
2.What is the principle of this object?
3.State the uses of the given object.
4.What is an infrared camera?
5.What is thermoware?
Observe the diagram and answer the given questions below it.
1.What is the diagram about?
2.Does the same thing happen in liquids and gases?
3.Give one example of this property in everyday life.
Observe the diagram and answer the given questions below it.
1.What is the diagram about?
2.Why is the ice wrapped in wire gauze?
3.What does this experiment prove?
Draw neat labelled diagrams of:
Thermos flask
Thermos flask
Draw neat labelled diagrams of:
Expansion and contraction of a liquid
Expansion and contraction of a liquid
| Column ‘A’ | Column ‘B’ |
| 1. Radiation | a. convection current |
| 2. Black body | b. conduction |
| 3. Vibration | c. absorbs more heat |
| 4. A rotating paper lantern | d. no medium |
| Column ‘A’ | Column ‘B’ |
| 1. Good conductor | a. flow of particles |
| 2. Bad conductor | b. particles vibrate |
| 3. Conduction | c. glass |
| 4. Convection | d. copper |
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