Ramsay Test Thermodynamics 2

Question 1

What is the first law of thermodynamics fundamentally a statement of?

Accepted Answer

Conservation of energy

Answer

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?

Accepted Answer

Conduction

Answer

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?

Accepted Answer

100 degrees

Answer

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?

Accepted Answer

It rises

Answer

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?

Accepted Answer

Radiation

Answer

Radiation transfers energy as electromagnetic waves, needing no physical medium.

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