Heat

Front

What happens to the average speed of gas molecules as the temperature of a confined gas rises?

Back

The average speed of gas molecules increases.

Front

What occurs to the molecular motion of a hot marble dropped into cool water?

Back

The marble molecules will slow down while the water molecules speed up until they reach the same average kinetic energy.

Front

Why does the pressure of a gas in an enclosed container increase as the temperature rises?

Back

The kinetic energy of the gas particles increases, causing them to hit the container walls with greater speed.

Front

What must object A have to have a higher absolute temperature than object B?

Back

Higher average internal kinetic energy.

Front

What type of heat transfer occurs when a marshmallow is heated directly above an open flame?

Back

Convection.

Front

Define heat in the context of thermodynamics.

Back

Heat is the energy transferred between systems or objects with different temperatures (thermal energy transfer).

Front

What is the relationship between temperature and kinetic energy in gases?

Back

As the temperature of a gas increases, the average kinetic energy of its molecules also increases.

Front

Explain conduction as a method of heat transfer.

Back

Conduction is the transfer of heat through direct contact between materials, where energy is transferred from hotter to cooler regions.

Front

What is convection and how does it differ from conduction?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), while conduction occurs through direct contact.

Front

Define radiation in terms of heat transfer.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.