Heat Quiz - ICSE Class 7 Science

Free practice quiz: Heat (ICSE Class 7 Science). 47 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 7 Science practice quiz has 47 multiple-choice questions on Heat, and 47 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following processes involves the transfer of heat through electromagnetic waves, requiring no medium for propagation?

   1. Conduction
   2. Convection
   3. Radiation
   4. Evaporation
   Show answer

   Answer: C. Radiation

   Radiation is the transfer of heat through electromagnetic waves. This is how the Sun's heat reaches Earth. Conduction and convection require a medium.

2. Which of the following is a good insulator of heat?

   1. Copper
   2. Aluminum
   3. Wood
   4. Iron
   Show answer

   Answer: C. Wood

   Wood is a poor conductor of heat and is therefore a good insulator. Copper, aluminum, and iron are metals and are good conductors.

3. Which material would be best for the outer jacket of a thermos flask to reduce heat loss by radiation?

   1. Dull black
   2. Shiny silver
   3. Dull white
   4. Matte red
   Show answer

   Answer: B. Shiny silver

   Shiny surfaces are poor absorbers and poor emitters of thermal radiation. Silvered surfaces in thermos flasks are highly reflective.

4. A sea breeze blows from the sea to the land during the day because:

   1. The sea heats up faster than the land.
   2. The land cools down faster than the sea.
   3. The land heats up faster than the sea.
   4. The sea cools down faster than the land.
   Show answer

   Answer: C. The land heats up faster than the sea.

   During the day, land heats up faster than water. The warmer air above the land rises, creating low pressure. Cooler, denser air above the sea moves in to replace it, creating a sea breeze.

5. When water vapor cools and turns back into liquid water, it forms dew. This process is:

   1. Evaporation
   2. Boiling
   3. Condensation
   4. Freezing
   Show answer

   Answer: C. Condensation

   Condensation is the change of state from gas to liquid, which happens when water vapor cools.

More questions in this quiz

Answers and explanations are in the full quiz.

1. When a metal rod is heated at one end, the heat transfer along the rod to the other end is primarily through:
2. Which state of matter is the poorest conductor of heat?
3. A thermos flask is designed to minimize heat transfer by:
4. The phenomenon responsible for the rise of hot air in a balloon is:
5. A substance that allows heat to pass through it easily is called a:
6. Which of the following colors absorbs the most radiant heat?
7. The SI unit of temperature is:
8. When water boils, it changes from a liquid to a gas. This process is called:
9. What is the term for the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius?
10. Which process of heat transfer is most effective in liquids and gases?
11. When ice melts into water, the heat absorbed by the ice without a change in temperature is called:
12. Objects that are good absorbers of heat are also good:
13. The handle of a cooking utensil is often made of a material that is a poor conductor of heat. This is to:
14. The expansion of a substance when heated is known as:
15. Why does a mercury thermometer work?
16. The process by which steam turns back into water is called:
17. When you touch a hot object, heat is transferred to your hand by:
18. What is the boiling point of water in Celsius?
19. A land breeze blows from the land to the sea during the night because:
20. Which of the following statements about heat and temperature is correct?
21. The heat transfer from the Sun to the Earth is an example of:
22. A pot of water is heated from below. The primary method of heat transfer within the water is:
23. The temperature at which a liquid changes into a solid is called its:
24. Which of the following would provide the best insulation against heat loss?
25. The heat energy gained or lost during a change of state, without a change in temperature, is known as:
26. Which color of clothing would be most comfortable to wear on a hot sunny day?
27. What is the freezing point of water in Fahrenheit?
28. When you feel the warmth of a bonfire without touching it, the heat is reaching you primarily through:
29. The process of a solid turning directly into a gas without passing through the liquid state is called:
30. A bimetallic strip, used in thermostats, bends when heated because:
31. Which of the following has the highest specific heat capacity?
32. The 'felt' heat that you experience from a hot object is due to:
33. Which part of the thermos flask is designed to reduce heat transfer by convection?
34. Which of the following would best prevent heat loss through the walls of a house?
35. The thermometer that measures very high temperatures, such as those in furnaces, often uses the principle of:
36. The process of heat transfer in solids by direct contact of particles is called:
37. The process of evaporation causes the remaining liquid to:
38. Which of the following is an example of convection?
39. What is the term for the temperature at which a liquid boils and turns into a gas?
40. Which of the following is NOT a method of heat transfer?
41. A Styrofoam cup is a good insulator because:
42. The Celsius scale sets the freezing point of water at 0°C and the boiling point at:

More quizzes

• Light energy▶ Play
• Motion▶ Play
• Physical quantities and measurement▶ Play
• Sound▶ Play
• Electricity and magnetism▶ Play
• Energy and simple machines▶ Play

Browse all Physics quizzes

More to play