$37)$ A thermometer is placed in a beaker of warm water. Explain what is going on at the molecular level as the reading on the thermometer rises from $25C$ to $40C($three step process$).$ Use a diagram to aid your written explanation.

$38)$ A steel television broadcasting tower changes height depending on the temperature $($by about $1$ part in $100,000$ for each degree Celsius change!$).$ Assuming that daytime is usually warmer than nighttime, is the tower taller during the day or at night?

Describe the change in the behavior of particles to support your answer. Use a diagram of the particles during the day and at night to aid your written explanation.