Energy and Heat Transfer Concepts

What is the main difference between potential energy and kinetic energy?

• Potential energy is energy due to motion, while kinetic energy is energy due to position.

• Potential energy is energy due to position, while kinetic energy is energy due to motion.

• Both potential and kinetic energy are forms of thermal energy.

• Potential energy is always greater than kinetic energy.

According to the law of conservation of energy, energy can:

• Be created and destroyed.

• Only be created, not destroyed.

• Be transformed from one form to another, but not created or destroyed.

• Only be destroyed, not created.

What does temperature measure in a substance?

• The total energy of the substance.

• The average potential energy of the particles.

• The average kinetic energy of the particles.

• The heat content of the substance.

What is heat in terms of energy flow?

• Energy stored in a substance.

• Energy that flows from a colder object to a warmer object.

• Energy that flows from a warmer object to a colder object.

• Energy that remains constant in a system.

In which direction does heat flow naturally?

• From a colder object to a warmer object.

• From a warmer object to a colder object.

• In both directions equally.

• Heat does not flow naturally.

Which of the following describes an exothermic process?

• A process that absorbs heat from the surroundings.

• A process that releases heat to the surroundings.

• A process that neither absorbs nor releases heat.

• A process that only occurs at high temperatures.

Which of the following changes of physical state is an endothermic process?

• Freezing

• Condensation

• Melting

• Deposition

What is the formula to calculate the heat gained or lost during warming up or cooling down?

What is specific heat capacity?

• The amount of heat required to change the temperature of 1 gram of a substance by 1 degree Celsius.

• The total heat content of a substance.

• The amount of heat required to change the state of 1 gram of a substance.

• The amount of heat required to change the temperature of 1 kilogram of a substance by 1 degree Celsius.