Thermal Energy

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

How does temperature affect the energy of water molecules?

Back

The higher the temperature of the water, the greater the amount of energy in the system and the faster the water molecules move.

Front

What is the relationship between the thickness of a draft excluder and energy transfer?

Back

Thicker draft excluders allow less energy to transfer, resulting in a smaller increase in temperature.

Front

What type of thermal energy transfer occurs through fluids?

Back

Convection.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

What is radiation in terms of thermal energy transfer?

Back

Radiation is the transfer of energy through electromagnetic waves, such as heat from the sun.

Front

What does a high specific heat mean?

Back

It requires more energy to change the temperature of a substance.

Front

What is kinetic energy in the context of thermal energy?

Back

Kinetic energy is the energy of motion; in thermal energy, it refers to the movement of particles.

Front

How does the kinetic energy of cold substances compare to warm substances?

Back

Cold substances have lower kinetic energy because their particles are moving around less.

Front

What is the effect of temperature on the speed of molecules?

Back

As temperature increases, the speed of molecules increases.