Specific Heats of Various Substances

Substance

Specific Heat

(cal/gram C)

Specific Heat

(J/kg C)

water (pure)

1.00

4186
wet mud 0.60 2512
Ice (0 C) 0.50 2093
sandy clay 0.33 1381
dry air (sea level) 0.24 1005
quartz sand 0.19 795
granite 0.19 794

Note: 1 calorie = 4.186 joules (both are units of heat (energy))

Q: Which has the highest heat capacity:

2 grams of pure water

4 grams of ice at 0 C

10 grams of quartz sand   ANSWER

Q: Which will become warmer:

adding 10 calories to 1 gram of water

adding 10 calories to 1 gram of quartz sand  ANSWER

  • The difference in specific heats between land and water creates the sea breeze circulation