Heat Transfer and Thermodynamics Quiz

What is the natural flow of heat?

• From lower to higher temperature

• From higher to lower temperature

• Always stays constant

• Randomly flows without direction

What type of process requires no external energy for heat transfer?

• Non-spontaneous process

• Spontaneous process

• Mechanical process

• Pump process

What is needed for heat to flow from a lower to a higher temperature?

• More heat energy

• No additional energy

• Mechanical energy

• Temperature difference

Which law of thermodynamics is applied to heat flow?

• First Law

• Third Law

• Second Law

• Zeroth Law

What happens when two objects of different temperatures are in contact for a long time?

• Their temperatures remain different.

• They reach thermal equilibrium.

• Heat flows continuously.

• Temperature equalization stops occurring.

In thermal equilibrium, what occurs?

• Heat flows from cold to hot objects.

• Heat exchange continues between objects.

• Heat flow stops because temperatures are equal.

• Mechanical energy is required to maintain equilibrium.

Why does a thermometer stop increasing in temperature after some time in an armpit?

• It breaks the Second Law of Thermodynamics.

• The thermometer and armpit reach thermal equilibrium.

• Mechanical energy prevents further change.

• Heat continues to flow endlessly.

What provides the work needed for a heat pump to operate?

• Natural heat flow

• The motor of the heat pump

• Temperature difference

• Spontaneous energy

What type of heat flow occurs when heating water on a stove?

• Non-spontaneous

• Continuous flow

• Spontaneous

• Equilibrium-based

According to the Second Law of Thermodynamics, heat will never flow spontaneously from:

• A hot object to a cold object

• A cold object to a hot object

• One object to another of the same temperature

• Thermal equilibrium to imbalance