Heat Homework Name ____________________

For 1 – 5 choose your answers from the following list:

temperature, heat, internal energy, calorie, specific heat capacity, heat of fusion

1. The total potential and kinetic energy of the atomic particles in a substance _______________

2. The energy needed to raise 1 g of any substance by 1°C _____________________

3. The energy that flows between objects because of temperature differences _______________

4. The average kinetic energy of the atomic particles in a substance _______________________

5. The energy needed to raise the temperature of 1 g of water by 1°C _____________________

6. How many calories of energy are needed to bring a 3200 g pot of water from a room

temperature of 20^o C to a spaghetti temperature of 100^o C?

7. A piece of metal is held over a flame for one minute, then it is dropped into a 650 ml

container of water at 22° C . If the temperature of the water increases to 67° C, how much

heat energy did the metal absorb from the flame? (remember that 1 ml of water = 1 gram)

8. If the specific heat capacity of the metal in problem #7 was .055 cal/g ^o C, how hot was the

metal when it was dropped into the water?

A 765 N person climbs to the top of a 6.5 meter high diving platform and does a “cannon ball”

into a pool containing 24,000,000 g of water.

9. How many joules of energy did the person gain when he climbed the platform?

10. How many calories of energy did he transfer to the water when he landed?

11. How much would the temperature of the pool go up after he landed?

12. The specific heat capacity of dry air is .239 cal/g ^oC , but it is .246 for humid air. Use the

difference between these two to explain why the desert has a larger Day/night temperature swing

than a humid coastal region.