Ramsay Test Thermodynamics 2 — Questions and Answers
Question 1: What is the first law of thermodynamics fundamentally a statement of?
- Conservation of energy (Correct answer)
- Increasing entropy
- Heat always flows to cold
- Absolute zero is unreachable
Correct answer: Conservation of energy
The first law states that energy cannot be created or destroyed, only converted between forms.
Question 2: Heat transfer through direct physical contact between materials is called what?
- Conduction (Correct answer)
- Convection
- Radiation
- Advection
Correct answer: Conduction
Conduction transfers heat through molecular contact within or between solids.
Question 3: On the Celsius scale, at what temperature does water boil at standard atmospheric pressure?
- 100 degrees (Correct answer)
- 212 degrees
- 0 degrees
- 373 degrees
Correct answer: 100 degrees
Water boils at 100 degrees Celsius at sea-level atmospheric pressure.
Question 4: What happens to the boiling point of a liquid as pressure increases?
- It rises (Correct answer)
- It falls
- It stays constant
- It becomes undefined
Correct answer: It rises
Higher pressure raises the boiling point, which is why pressure cookers cook faster.
Question 5: Which heat transfer mode requires no medium and can occur through a vacuum?
- Radiation (Correct answer)
- Conduction
- Convection
- Diffusion
Correct answer: Radiation
Radiation transfers energy as electromagnetic waves, needing no physical medium.
Question 6: What is the term for the energy required to change a substance from solid to liquid without a temperature change?
- Latent heat of fusion (Correct answer)
- Specific heat
- Sensible heat
- Heat capacity
Correct answer: Latent heat of fusion
Latent heat of fusion is the energy absorbed during melting at constant temperature.
Question 7: A material with high thermal conductivity will do what compared to a low-conductivity material?
- Transfer heat faster (Correct answer)
- Insulate better
- Store more heat
- Resist temperature change
Correct answer: Transfer heat faster
High thermal conductivity means heat passes through the material more readily.
Ramsay Test Thermodynamics 2
What is the first law of thermodynamics fundamentally a statement of?