Physics Chapter 21

Energy content in a piece of food can be determined by

Burning the food

Helium

Expands most when the temperature is lowered

Desert sand is very hot in the day and very cold at night is evidence that sand

Has a low specific heat capacity

Some molecules are able to absorb amounts of energy in the form of internal vibrations and rotations. Materials composed of such molecules would have

High specific heat capacities

Heat is Measured In

Kilocalories, joules, and calories

When I am a ring is heated the whole becomes

Larger

Temperature

Related mostly to the average molecular kinetic energy in a substance.

Heat

The energy transferred between objects because of a temperature difference

Internal Energy

Total Amount of energy contained in an object

The reason fish live from year-to-year and ponds at freeze over in the winter is that

Water below the ice is 4° above freezing

The reason emotions temperature doesn't vary much from one season to the next is that

Water has a high specific heat capacity

Water or Sand

Water has a higher specific heat capacity than sand.

4 Degrees C

When a container of water is at its smallest volume

Which at the same temperature will cool more slowly on the Hotday

watermelon