Flashcard 2.2 Heat and Heat Transfer Review

Front

What happens to heat energy during a change of state?

Back

Heat energy can be added without a temperature change because the change of state requires energy.

Front

What occurs when an ice cube is placed in hot tea?

Back

The ice will melt and the temperature of the tea will drop quickly; then the change will slow until equilibrium is reached.

Front

What happens to the total energy when a ball is thrown off a mountain?

Back

Both the kinetic and potential energy change, but the total energy remains constant.

Front

What is an undesired effect of a light bulb transferring electrical energy?

Back

Heat is generated as an undesired effect.

Front

What does the law of conservation of energy state?

Back

Energy is not created or destroyed; it changes form or is transformed.

Front

What is an example of energy transformation in a light bulb?

Back

Chemical energy ⇒ electrical energy ⇒ light energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, related to temperature.

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object to another due to a temperature difference.