Discussion of the section on
change of phase
Here are some things to do to finish this section.
Did you think of a question that could be studied, or make an observation
that was interesting or unexpected? You should send it to the
Question
board!
Discuss these questions with the people in your group:
Under what conditions would you expect to encounter
fog? Give both some examples and a general description
of the necessary circumstances
in terms of what you have learned in this unit.
Dry clothes keep you warm much more effectively than wet clothes
do, and when we get too hot, we sweat.
Compare and contrast the properties of you, clothes, air,
and water that contribute significantly to this difference
between wet and dry clothes, and wet and dry people.
Early one sunny spring morning Carol walked outside in the grass and got her
shoes wet because dew had
collected on the grass. A few days later however, she walked outside at the same time and her shoes stayed
dry -- there was no dew on the grass that morning. Explain some environmental factors that led to these two
different occurrences.
Please send
us your discussions of two
of these questions -- the one you are most sure about and the one you are
least sure about (and tell us which is which!). Don't forget to tell us
who is in the group.
If there is something that you don't understand about change of phase,
Ask us!
The next section is about How temperature and
energy are related.