Amplify Thermal Energy C2 Flashcard

Front

What happens to energy transfer when colliding systems reach equilibrium?

Back

Molecules stop transferring energy when colliding systems reach equilibrium.

Front

Which cup of coffee will likely be warmest after 10 minutes on a 30 degree day: a 40 degree cup or a 90 degree cup?

Back

The 90 degree cup because it transferred energy to the colder air.

Front

What occurs when a frozen Bubba-Burger is placed on a hot grill?

Back

The grill molecules are transferring energy to the Bubba-Burger.

Front

What happens when a 65 degree sample makes contact with a 35 degree sample?

Back

The red will get hotter with energy from the black until they are equal.

Front

True or False: When two objects touch, the warmer one will always transfer its energy to the cooler one.

Back

True.

Front

Define thermal equilibrium.

Back

Thermal equilibrium is the state in which two objects in contact with each other cease to exchange energy, as they reach the same temperature.

Front

What is thermal energy?

Back

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

Front

Explain the concept of energy transfer by conduction.

Back

Energy transfer by conduction occurs when heat is transferred through direct contact between materials.

Front

What is the role of temperature in energy transfer?

Back

Temperature determines the direction of energy transfer; energy flows from higher temperature to lower temperature.

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.