Unit 4: Thermal Energy (I.6C & I.6D)

Front

What kind of kinetic energy does hotter air have?

Back

Higher kinetic energy.

Front

What remains constant in a closed circuit with a battery as energy is converted?

Back

Total amount of energy.

Front

What is a system called where the total amount of energy remains constant during energy conversions?

Back

Closed System.

Front

What happens to the total amount of energy in a thermal power plant as energy is converted from chemical to thermal to mechanical to electric?

Back

It remains constant.

Front

How does lubrication improve efficiency in a mechanical system?

Back

By reducing energy lost to heat from friction.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter; it is the total kinetic energy of particles in an object.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

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

Back

Electrical energy is converted to light and thermal energy.

Front

What is the difference between an open system and a closed system?

Back

An open system can exchange energy and matter with its surroundings, while a closed system can only exchange energy.

Front

What role do resistors play in a circuit?

Back

Resistors limit the flow of electric current and convert electrical energy into heat.