Physics Quiz: Heat and Thermodynamics

What is the form of energy that produces the sensation of hotness or coldness of a body?

• Electricity

• Light

• Sound

• Heat

Which instrument is used to measure heat?

• Hygrometer

• Calorimeter

• Barometer

• Thermometer

What is the unit of heat?

• Kelvin

• Newton

• Joule

• Pascal

What is the property that determines whether or not a body is in thermal equilibrium with another body?

• Pressure

• Volume

• Temperature

• Density

Which property of an object remains constant in an adiabatic process?

• Entropy

• Volume

• Pressure

• Temperature

According to the Zeroth Law of Thermodynamics, if two bodies are in thermal equilibrium with a third body, what must be true?

• They have the same density

• They have the same temperature

• They have the same volume

• They have the same pressure

What is the efficiency of a Carnot's engine dependent on?

• The volume of the system

• The pressure of the system

• The temperatures of the heat source and sink

• The working substance

What is the significance of entropy in thermodynamics?

• It indicates the direction of heat flow

• It represents the volume of a substance

• It determines the color of an object

• It measures the pressure of a system

What is the change in entropy in a reversible process?

• Negative

• Positive

• Infinity

• Zero

What does the area enclosed by the T-S diagram of an ideal Carnot engine represent?

• The pressure of the heat sink

• The temperature of the heat source

• The amount of work done by the engine

• The heat absorbed by the engine