By
Imara Abdullah
The goal of the lesson is to have students explain the conditions needed for rain and understand condensation and precipitation.
The student will conduct experiments to observe condensation, and measure local precipitation.
The student will define rain, precipitation and condensation, chart days of precipitation and measure rainfall.
Student Activities:
Give an example of condensation by performing an experiment.
If condensation does not occur, then will there be rain? Give reasons.
The lesson assessment for second graders is an rubric for these questions.
Ask student questions orally and score on amount of explanation given.
Definitions
The physical process by which a gas becomes a liquid; the opposite of evaporation.
Condensation: A chemical reaction in which water or
another
simple substance is released by the combination of two or more
molecules. The
physical process is represented by a liquid being removed from a vapor
or vapor
mixture.
Any form of water particles, either liquid or solid, which falls from the atmosphere and reaches the ground.
Precipitation: Precipitation is moisture that falls from the atmosphere as rain, snow, sleet, or hail. Precipitation varies in amount, intensity, and form by season and geographic location. These factors impact whether water will flow into streams or infiltrate into the ground. In most parts of the world, records are kept of snow and rainfall. This allows scientists to determine average rainfalls for a location as well as classify rainstorms based on duration, intensity and average return period. This information is crucial for crop management as well as the engineering design of water control structures and flood control.
The mixture of gases that surrounds the earth