7.8B & C: Thermal Equilibrium and Particle Theory

Front

Heat always travels from _____ to ______ objects.

Back

hot to cold

Front

The condition where two substances in physical contact with each other exchange no heat energy. They are said to be the same temperature.

Back

Thermal Equilibrium

Front

What is the particle theory?

Back

The particle theory states that all matter is made up of tiny particles that are in constant motion.

Front

What happens to particles in a solid when heated?

Back

They vibrate faster and may eventually break free from their fixed positions.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance.

Front

Which liquid has the greatest density: lamp oil, karo syrup, water, or honey?

Back

Honey

Front

At higher temperatures, particles in an object:

Back

move faster.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases).

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves.