Create Your Own Fog
Type of Lesson: Hands-on Activity
Time Needed: 20 minutes
MEGOSE EAW2 Describe weather conditions and climates.
MEGOSE EAW6 Describe patterns of changing weather and how they are measured.
MEGOSE EAW10 Explain and predict general weather patterns and storms.
Quick Summary of Lesson
Students form fog in a jug. This lesson would be a great intro to looking more deeply at fog during a weather unit.
1. Fill the jar halfway with hot water.
2. Place the wire mesh on top of the jar's mouth. Then place 3-4 ice cubes on top of the wire mesh.
3. After a few minutes, observe the fog that will form inside the jug.
Notes to the Teacher
The reason this activity works is this: the hot water evaporates into the jar. The ice cubes create a cool air mass at the top of the jar. This cool air causes the evaporated water to condense again, so that we see fog. Of course, the evaporated water does need condensation nuclei in order to condense (dust, aerosols, etc), but that's usually not lacking in a normal classroom!
Need More Information? Try Using Windows to the Universe
Please use these links for further ideas or more information:
Earth sky conditions
Weather crossword puzzle
Last modified prior to September, 2000 by the Windows Team
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