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Science - 4th Grade
Standard 1 Objective 1
This activity helps students understand the distribution of water on Earth.
Water covers 70% of Earth's surface and is found in different locations on Earth. The amount of water in the oceans, atmosphere, and on land is hard to comprehend. Approximately ninety percent (97%) of it is found in the oceans. The atmosphere holds less than 0.001%, about two percent (2%) is found frozen on Earth in glaciers, and one percent (1%) is freshwater found in lakes, rivers and groundwater. Annual precipitation amounts to 30 times the total water found in the atmosphere at any given time.
In the western United States, water is a valuable resource that comes and goes with the seasons. During the winter the snow falls and accumulates in the mountains. As the snow melts in the spring and during the summer, the water is absorbed into Earth or forms small streams that flow down the mountains. Groundwater is all the water that penetrates the soil and underlying rock layers. Water that flows off the surface is called runoff.
Using water wisely is the responsibility of every member of society. It is a valuable resource, and we are responsible for its management and reasonable consumption.
1. Use science process and thinking skills
2. Manifest scientific attitudes and interests
Pre-Assessment/Invitation to Learn
In small groups, ask students to brainstorm a list of all the places where water is found on Earth. Have them write this list in their journals.
Fine Arts/Visual Arts-
Homework & Family Connections
Discuss and have students do the Home Activity Student Worksheet, Where is All the Water? (pdf)
Check for students' understanding with the answers they record for the Findings and Rename Earth activity in their journals.