Unit 5 Retest

Front

What is heat transfer by radiation?

Back

Heat transfer through electromagnetic waves, such as the heat from the sun or cooking a hotdog in a microwave.

Front

What occurs when thermal equilibrium is reached within a system?

Back

All substances within the system have the same temperature.

Front

What is conduction?

Back

The transfer of thermal energy through direct contact between materials, such as a hot mug of cocoa warming the table it sits on.

Front

What happens to the kinetic energy of particles in a substance when the temperature increases?

Back

The kinetic energy increases.

Front

What is convection?

Back

The movement of gas or liquid in which warmer parts move up and the colder parts move down.

Front

What is thermal energy?

Back

The total kinetic energy of particles in a substance.

Front

What is the difference between conduction and convection?

Back

Conduction is heat transfer through direct contact, while convection is heat transfer through the movement of fluids.

Front

What is an example of radiation?

Back

Feeling warmth from the sun or a heat lamp.

Front

What is thermal equilibrium?

Back

A state in which all parts of a system have the same temperature and no heat flows between them.

Front

What is the role of temperature in thermal energy transfer?

Back

Temperature determines the direction of heat flow; heat moves from higher to lower temperature.