11.1 Crash Course Physics - Heat

What is the measure of the average kinetic energy of each individual molecule in a substance?

• Internal energy

• Temperature

• Heat

• Thermal energy

What does thermal energy represent in a system?

• The total potential energy of all molecules

• The measure of heat transferred between systems

• The average potential energy per molecule

• The kinetic energy of all the molecules added together

How is heat represented in equations?

• H

• T

• Q

• U

What unit is used to measure heat in the International System of Units?

• Calories

• Kilocalories

• Joules

• Degrees Celsius

What does specific heat measure?

• The amount of heat needed to change a substance's phase

• The temperature change of a substance

• How well a substance stores heat

• The thermal conductivity of a substance

What is the heat required to change the phase of a substance known as?

• Thermal energy

• Latent heat

• Specific heat

• Conductive heat

Which method of heat transfer does not depend on the movement of molecules?

• Radiation

• Expansion

• Convection

• Conduction

What is the primary reason we wear clothes according to the text?

• To protect from radiation

• To prevent heat loss

• For modesty

• To absorb heat

What factor increases the rate of heat conduction?

• Increasing the distance between molecules

• Increasing the temperature difference

• Lowering the temperature difference

• Decreasing the cross-sectional area

What is the Stefan-Boltzmann equation used to describe?

• The amount of heat transferred during a phase change

• The specific heat of a substance

• How much heat an object radiates over time

• The thermal conductivity of a material