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Science - 4th Grade
Standard 1 Objective 2
This classroom demonstration will help students understand the water cycle.
Water is constantly moving from one location to another and changing state. Snow and rain fall to Earth from clouds. This is called precipitation. The rain water and melted snow run downhill into rivers and lakes, sometimes crashing over waterfalls. Eventually the water flows into evaporation basins such as the ocean or the Great Salt Lake, where water can return to the atmosphere.
As water evaporates, it changes from liquid into gas, and moves from oceans, lakes, and rivers into the atmosphere where it forms clouds. Then the cycle begins all over again. (Refer to Instructional Procedures for a discussion on how clouds are formed.)
1. Use science process and thinking skills
2. Manifest scientific attitudes and interests
3. Understand science concepts and principles
Pre-Assessment/Invitation to Learn
(This is a teacher demonstration for a student inquiry discovery.)
Homework & Family Connection
Give each student the assignment to teach his/her family how clouds are formed. He/she should be able to explain with these words:
Have the student explain the experiment that was done in class by using a two-liter bottle as a prop only, showing what was done to the bottle to make a cloud. Have him/her report back to class of his/her success.
Check for students understanding by looking at their journals. See how well hey answered your questions during the demonstration. Listen to their answers th discussion for understanding.