INTERNAL ENERGY AND TEMPERATURE

Let’s start with temperature.

Compare their temperatures.

They have the same temperature,both 0 °C.

Compare their temperatures.

They have the same temperature,both 100 °C.

Compare their temperatures.

The boiling water is hotter at 100 °C, compared to the ice cube at 0 °C.

Then, how about internal energy?

Compare their internal energies.

The iceberg has more internal energy because it has more mass.

Compare their internal energies.

The boiling water in the bigger basin has more internal energy because it has more mass.

Compare their internal energies.

Boiling water has more internal energy because of its higher temperature.

Compare their internal energies.

Although boiling water has higher temperature, the iceberg has greater internal energy

because it has so much more mass.

Tying it up together:

Heat transfers from an area of higher temperature to an area of lower temperature.

The object that the heat transferred to often has its internal energy and temperature increased.

The object that the heat transferred from often has its internal energy and temperature decreased.