Practice Question

1.During the day, the temperature of the sand on a beach increases. Explain the temperature increase in terms of incident radiation and emitted radiation

Rate of absorption of incident radiation is greater than the rate of emitted radiation for the sand, so the temperature increases.

2. The temperature of a refrigerator is kept constant. Explain how this is possible in terms of incident radiation and emitted radiation

For the temperature to be constant the rate of absorbed incident radiation needs to be equal to the rate of emitted radiation.

3. When liquid water is placed into a freezer it changes into ice. Explain this change in terms of incident and emitted radiation.

For the temperature to decrease the rate of absorbed incident radiation needs to be less than the rate of emitted radiation