Thermal Energy - 2nd

Front

What is thermal energy?

Back

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

Front

What is conduction?

Back

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

Front

What is convection?

Back

Convection is the method of heat transfer that occurs in fluids (gases and liquids) through the movement of the fluid itself.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as light, and does not require a medium to travel through.

Front

What happens to the kinetic energy of particles as temperature increases?

Back

As temperature increases, the kinetic energy of the particles also increases, causing them to move faster.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Front

How does heat transfer from a hot object to a cold object?

Back

Heat transfers from a hot object to a cold object through conduction, convection, or radiation until thermal equilibrium is reached.

Front

What is the role of thermal energy in melting ice?

Back

Thermal energy from the surrounding environment is absorbed by the ice, causing its molecules to move faster and transition from solid to liquid.

Front

What is the principle behind hot air balloons?

Back

Hot air balloons inflate because thermal energy from a heat source warms the air inside the balloon, causing it to rise due to lower density compared to the cooler air outside.

Front

What causes sea breezes during the day?

Back

Sea breezes are caused by the uneven heating of the Earth's surface, where land heats up faster than water, creating convection currents.