Thermal Energy Unit Flashcard

Front

What happens to the Total Kinetic Energy (Thermal Energy) in a system when ice cubes are placed into a glass of water?

Back

The Thermal Energy does not change, it just transfers from one part of the system to the other until the ice and the water are equal.

Front

What occurs when two blocks at different temperatures collide?

Back

Energy will start to transfer from the block with higher temperature to the block with lower temperature.

Front

What is the term for a balanced state in which a system is stable, such as when two or more samples are at the same temperature?

Back

Equilibrium.

Front

What is Thermal Energy?

Back

The TOTAL kinetic energy of all the molecules that make up a substance.

Front

How do you calculate the Average Kinetic Energy (Temperature) of a substance?

Back

Average Kinetic Energy = Total Kinetic Energy / Number of molecules.

Front

What is the relationship between temperature and kinetic energy?

Back

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

Front

What happens to the thermal energy of water when ice is added?

Back

The thermal energy of the water decreases as it transfers energy to the ice.

Front

What is the effect of thermal energy transfer on the temperature of two colliding objects?

Back

The object with higher temperature loses thermal energy, while the object with lower temperature gains thermal energy.

Front

Define Equilibrium in terms of thermal energy.

Back

Equilibrium is the state where two or more objects have the same temperature and no net thermal energy transfer occurs.

Front

What is the formula for calculating Total Kinetic Energy in a substance?

Back

Total Kinetic Energy = Average Kinetic Energy x Number of molecules.