Hi folks,
Today in class we spent quite a bit of time learning about clouds and cloud formation. We did a quick activity where the students were able to make a cloud in a 2 liter bottle. We also explored the idea of humidity and dew point. We split up into groups to do a lab to find the dew point of the classroom. There will not be a recording of today's class since so much of it was spent doing activities and labs.
Homework due next week is to:
Answer the following questions.
1. When we made the cloud in the bottle what was missing the first time you tried to make it work?
2. Why couldn't you make the cloud in the bottle without the missing thing?
3. What did you do to make the cloud appear in the bottle?
4. What did you to to make it disappear?
5. In terms of high and low pressure, how did the squeezing of the bottle relate to the real world of clouds and pressure?
6. What did you do to make the outside of the can go from dry to moist?
7. What happened to make the can get moist?
8. If we did the dew point experiment in the summer, what change would we see in the results (if any)?
9. What two things determine the dew point temperature? (Check out pages 456 and 457 in the book if you're not sure.)
10. Will dew point change with increasing temperature if the amount of moisture in the air doesn't change? Explain. (Check out pages 456 and 457 in the book if you're not sure.)
11. Why does the humidity in winter tend to be less than the humidity in summer? (Check out pages 456 and 457 in the book if you're not sure.)
12. What makes water condense?
13. What happens to make clouds form?
14. Why can clouds form best in a low pressure system?
15. How does dew on the grass and dew point relate to one another?
16. Why does dew tend to be on the grass in the morning and not later in the day?
17. Where does the water on your mirror come from after you take a shower? ( Be sure to mention humidity and condensation in your answer.)
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