Thermal Energy, Temperature, Heat and States of Matter

Front

What is thermal expansion?

Back

Thermal expansion is the process in which a substance's particles spread out as it warms up, causing the substance to increase in volume.

Front

What is thermal energy?

Back

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

Front

What is temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What happens to particles in a substance when it is heated?

Back

When a substance is heated, its particles gain energy, move faster, and may spread out, leading to thermal expansion.

Front

What is thermal contraction?

Back

Thermal contraction is the process in which a substance's particles come closer together as it cools down, causing the substance to decrease in volume.

Front

How does heat transfer occur?

Back

Heat transfer occurs through conduction, convection, and radiation.

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 or gases) caused by differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What is the difference between thermal energy and temperature?

Back

Thermal energy is the total energy of all particles in a substance, while temperature is the average energy of the particles.