1. Minimum thermometers are usually read during the morning, yet they are reset in the afternoon. Explain why. 2. If clouds arrive at 2 a.m. in the middle of a calm, clear night, it is quite common to...

1. Minimum thermometers are usually read during the morning, yet they are reset in the afternoon. Explain why.

2. If clouds arrive at 2 a.m. in the middle of a calm, clear night, it is quite common to see temperatures rise after 2 a.m. How does this happen?