Stuck in someone else's frames? break free!
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NOW I'M IN TROUBLE! Observe the condensation of water on glasses of ice water. How many times did that occurrence get you into trouble with Mom? Next time you ruin a table or other nice wooden surface by leaving a glass with ice or cold beverage, just tell Mom you were doing a scientific experiment. That'll make her happy about having a piece of furniture destroyed... Discuss how that happens and the source of the droplets. Can you foresee that phenomenon? I'll bet Mom can! Don't the kitchen windows at home get "steamed up" when Mom cooks? Especially in winter? Is it the same kind of thing? Why is it that when the windows get steamed up and you draw happy faces on them with your fingertips, the steam goes away but the happy faces are on there forever? That makes Mom angry, too, doesn't it? Do all these kinds of things irritate Mom? Probably what irritates her is the fact that we try to have an effect on nature by doing this kind of stuff. The truth is that we cannot change the activities of Mother Nature; we can only learn to deal with it as non-destructively as possible. On a very cold day go outside and observe how the moisture from your breath can be seen when it comes in contact with the cold outdoor air. Similarly, exhale across a tray of ice cubes or into an open freezer. You will realize that this phenomenon takes place when moist air comes in contact with cooler air or a cooler surface. Under adult supervision, boil some water in a pot, beaker, or tea kettle on a hot plate, or on the kitchen stove at home. When the water boils, step back and see what happens. You can now understand, and describe what you see. You will see clouds of moisture forming as the heated moist air rises in the cooler air of the room. The clouds of moisture are called "steam." Keep in mind that steam can cause severe burns. Stay away from it! Imagine how warm moist air near the earth rises and cools in the atmosphere in a similar way. How does it cool? Rising air cools at the rate of 1 degree F for every 300 feet in the atmosphere. Describe other personal experiences with condensation, such as moisture on a bathroom mirror, moisture on windows in a closed automobile. Envision yourself riding in the car on a morning that is so cold your eyeballs itch. After a few minutes in the car, the windows steam up and the driver can't see. What does the driver do? Puts cold air onto the wind- shield to make the windows clear; and it works! Then it really makes you feel cold! Don't cry; your eyeballs will freeze for certain. And your teeth will turn blue. And elephants will fly. This project will teach you, if nothing else, not to believe everything you see in print! Any problems with this page? Send URL to
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