Amplify Thermal Energy C2 Flashcard

Front

What happens to energy transfer between objects when they reach equilibrium?

Back

Energy transfer stops when the objects have molecules that move at about the same speed.

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 will likely be warmest because it transferred energy to the colder air.

Front

Why does red food coloring mix faster than blue food coloring in water?

Back

The red food coloring mixes faster because it is in the hot water.

Front

What is the reason for the stopping of energy transfer between colliding objects?

Back

Molecules stop transferring energy when colliding systems reach equilibrium.

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

Define thermal energy.

Back

Thermal energy is the total kinetic energy of the molecules in an object.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer energy to each other.

Front

Explain conduction in terms of energy transfer.

Back

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

Front

What role does temperature play in energy transfer?

Back

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

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids and gases).