Thermal Energy Transfer

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is convection?

Back

Convection is the transfer of thermal energy in fluids (liquids and gases) through the movement of the fluid itself, where warmer, less dense fluid rises and cooler, denser fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, which can occur through empty space.

Front

What happens to particles when heat is added?

Back

When heat is added to a system, the particles gain energy and move faster.

Front

What is thermal energy?

Back

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

Front

What is the freezing point?

Back

The freezing point is the temperature at which a liquid turns into a solid, typically 0°C for water.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

Which liquid is denser: water or honey?

Back

Honey is denser than water.

Front

What is the relationship between temperature and particle movement?

Back

As temperature increases, the movement of particles increases; as temperature decreases, particle movement decreases.

Front

What is a thermal conductor?

Back

A thermal conductor is a material that allows heat to pass through it easily, such as metals.