Heat Transfer Class 8 MCQ Mechanical Engineering

Attempt now to check your rank among 35 students! 30 Questions 20 Mins

About this Quiz

This Heat Transfer Class 8 MCQ test contains random 30 Objective Questions. You have select one correct answer among given options.

Heat Transfer Class 8 MCQ With Answers

1. Phase change from a liquid to solid?

  • Melting
  • Condensation
  • Evaporation
  • Freezing

2. What is the transfer of heat by direct contact?

  • Convection
  • Electromagnetic waves
  • Radiation
  • Conduction

3. What is the transfer of heat by movement of liquids or gases?

  • Radiation
  • Convection
  • Conduction
  • Heat

4. If an object has particles that are moving very quickly, the object 's temperature is probably _____.

  • cold
  • slow
  • big
  • hot

5. You're holding hands with your best friend. Your friend's hands are REALLY warm and yours are really cold. After a few minutes, this has changed. How might you explain what happened?

  • The cold energy from your hand transferred to your friend's hand through conduction.
  • The heat energy from your friend's hand transferred to your hand through conduction. 
  • The cold energy from your hand transferred to your friend's hand through convection.
  • The heat energy from your friend's hand transferred to your hand through convection.

6. Heat transfers from an area of ________temperature to an area of ______ temperature.

  • high to low
  • low to high
  • high to high

7. What are waves that can transfer heat through the vacuum of empty space?

  • Electromagnetic waves
  • Convection
  • Conduction
  • Heat

8. On a hot summer day, a student dropped an ice cube onto a park bench. Within minutes, the ice cube melted. Which method of heat transfer best describes the process the student observed?

  • radiation
  • melting
  • conduction
  • convection

9. What is a transfer of heat energy by electromagnetic waves?

  • Radiation
  • Convection
  • Conduction
  • Heat

10. What is the energy of the movement of particles in a substance?

  • Potential energy
  • Kinetic energy
  • Thermal energy
  • Temperature

11. If I am adding thermal energy to a liquid it will turn into _______.

  • Solid
  • Liquid
  • Gas
  • Melt

12. When the temperature of matter decreases the particles ...

  • speed up and move farther apart
  • speed up and move closer together
  • slow down and move farther apart
  • slow down and move closer together

13. What is a substance that does NOT conduct heat well?

  • Conductor
  • Insulator
  • Convector
  • Radiator

14. Warm air rises and the cool air sinks. This is...

  • conduction
  • convection
  • radiation

15. Warm water from the ocean moves to the north while cool waters moves to the south. This is an example of..

  • Conduction
  • Convection
  • Radiation

16. What is a substance that DOES conduct heat well?

  • Conductor
  • Insulator
  • Convector
  • Radiator

17. Phase change from a solid to a liquid...

  • melting
  • freezing
  • evaporation
  • condensation

18. What is the measurement of the average kinetic energy of a substance?

  • Kinetic energy
  • Temperature
  • Thermal energy
  • Potential energy

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