Heat Flow MCQs
Heat Flow MCQs
These Heat Flow multiple-choice questions and their answers will help you strengthen your grip on the subject of Heat Flow. You can prepare for an upcoming exam or job interview with these Heat Flow MCQs.
So scroll down and start answering.
1: A thermos bottle _____.
A. Reduces energy loss due to radiation
B. Reduces energy loss due to conduction
C. Reduces energy loss due to convection
D. All of the above
2: What is heat flow?
A. The movement of cold air
B. The transfer of thermal energy between objects due to a temperature difference
C. The expansion of a gas due to an increase in temperature
D. The release of energy during a chemical reaction
3: How does heat transfer occur through conduction?
A. Through the movement of fluid or gases
B. Through electromagnetic waves
C. Through direct contact between particles
D. Through the circulation of heat currents
4: What is the primary mode of heat transfer in a vacuum?
A. Conduction
B. Convection
C. Radiation
D. Advection
5: Which material is considered a good conductor of heat?
A. Wood
B. Glass
C. Copper
D. Rubber
6: What is the process of heat transfer in which hot fluid rises and cold fluid sinks?
A. Conduction
B. Convection
C. Radiation
D. Advection
7: What is the unit of measurement for heat flow?
A. Celsius (°C)
B. Joule (J)
C. Watt (W)
D. Newton (N)
8: Which of the following is an example of heat transfer by radiation?
A. Touching a hot pan
B. Feeling the warmth of sunlight on your skin
C. Blowing air to cool a hot beverage
D. Placing an ice pack on a sprained ankle
9: What is thermal conductivity?
A. The ability of a material to absorb heat
B. The rate at which heat flows through a material per unit temperature difference and unit distance
C. The temperature at which a substance changes phase
D. The total heat content of a substance
10: Which of the following is an insulator of heat?
A. Metal
B. Glass
C. Air
D. Aluminum
11: What is the second law of thermodynamics?
A. Heat always flows from a hot object to a cold object
B. The total heat content of an isolated system remains constant
C. Energy cannot be created or destroyed, only transformed
D. The efficiency of a heat engine is determined by the temperature difference between the hot and cold reservoirs
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