THERMODYNAMICS QUIZ (HEAT & TEMPERATURE
Thermodynamics deals with heat, temperature, and energy transfer in physical systems. It explains how energy moves between objects and how it affects matter. This quiz tests your understanding of thermal energy, heat flow, and basic laws of thermodynamics.
Thermodynamics Quiz
1. Thermodynamics is the study of
A. Motion and force
B. Heat and energy transfer
C. Light and sound
D. Electricity
2. Temperature is a measure of the
A. Amount of heat in a body
B. Average kinetic energy of particles
C. Total energy of particles
D. Mass of particles
3. The SI unit of temperature is
A. Celsius (°C)
B. Fahrenheit (°F)
C. Kelvin (K)
D. Joule (J)
4. Heat is best defined as
A. Energy stored in a body
B. Energy transferred due to temperature difference
C. Energy of motion
D. Chemical energy
5. Which instrument is used to measure temperature?
A. Barometer
B. Thermometer
C. Hygrometer
D. Ammeter
Thermodynamics Quiz
6. Heat always flows from
A. Cold body to hot body
B. Hot body to cold body
C. Lower mass to higher mass
D. Solid to liquid
7. Which mode of heat transfer does not require a medium?
A. Conduction
B. Convection
C. Radiation
D. Evaporation
8. Heat transfer in solids mainly occurs by
A. Convection
B. Radiation
C. Conduction
D. Expansion
9. Heat transfer in liquids and gases mainly occurs by
A. Conduction
B. Radiation
C. Convection
D. Reflection
10. The amount of heat required to raise the temperature of 1 kg of a substance by 1°C is called
A. Latent heat
B. Specific heat capacity
C. Thermal conductivity
D. Heat capacity
Thermodynamics Quiz
11. The heat required to change a substance from solid to liquid without temperature change is called
A. Latent heat of fusion
B. Latent heat of vaporization
C. Specific heat
D. Internal energy
12. The heat required to change a liquid into gas without temperature change is called
A. Latent heat of fusion
B. Latent heat of vaporization
C. Heat capacity
D. Specific heat
13. Which of the following is a good conductor of heat?
A. Wood
B. Plastic
C. Glass
D. Copper
14. Which of the following is a poor conductor of heat?
A. Iron
B. Aluminum
C. Plastic
D. Silver
15. The expansion of a liquid is greatest when it is
A. Heated
B. Cooled
C. Frozen
D. Compressed
Thermodynamics Quiz
16. The instrument used to measure heat energy is called
A. Thermometer
B. Calorimeter
C. Barometer
D. Hygrometer
17. The first law of thermodynamics is based on the principle of
A. Conservation of mass
B. Conservation of energy
C. Conservation of momentum
D. Conservation of charge
18. Which statement best describes the second law of thermodynamics?
A. Energy can be created
B. Heat flows naturally from cold to hot
C. Heat flows naturally from hot to cold
D. Energy can be destroyed
19. Absolute zero temperature is approximately
A. 0°C
B. –100°C
C. –273°C
D. –50°C
20. Which of the following increases the rate of heat loss?
A. Thick clothing
B. Shiny surface
C. Black dull surface
D. Vacuum
Thermodynamics Quiz ANSWERS AND EXPLANATIONS
1. B – Thermodynamics studies heat, energy transfer, and how energy changes form in physical systems.
2. B – Temperature measures the average kinetic energy of particles in a substance.
3. C – Kelvin is the SI unit of temperature used in scientific calculations.
4. B – Heat is energy transferred between bodies due to temperature difference.
5. B – A thermometer measures temperature by responding to thermal changes.
6. B – Heat naturally flows from hotter objects to colder ones until equilibrium.
7. C – Radiation transfers heat through electromagnetic waves and needs no medium.
8. C – In solids, heat is transferred mainly by conduction through particle vibration.
9. C – Convection transfers heat in fluids by the movement of warmer particles.
10. B – Specific heat capacity measures how much heat is needed to raise temperature.
11. A – Latent heat of fusion changes solid to liquid without temperature change.
12. B – Latent heat of vaporization changes liquid to gas at constant temperature.
13. D – Copper allows heat to pass easily, making it a good conductor.
14. C – Plastic resists heat flow, so it is a poor conductor.
15. A – Liquids expand when heated because particles move farther apart.
16. B – A calorimeter measures heat absorbed or released in reactions.
17. B – The first law states that energy cannot be created or destroyed, only transformed.
18. C – The second law explains that heat flows naturally from hot to cold bodies.
19. C – Absolute zero is about –273°C, where particle motion is minimal.
20. C – Black dull surfaces radiate heat faster, increasing heat loss.
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