WA.4. Earth and Space Science
ES2. Earth Systems, Structures, and Processes
2-3.ES2. Water and Weather: In prior years, students learned about Earth materials through their own observations. In grades 2-3 students learn that water exists in various locations and plays an essential role in Earth systems, including shaping land forms and weather. Weather changes from day to day, and weather conditions can be described by measurable quantities, such as temperature and rainfall. Environments can be affected by natural causes. Some of these changes are gradual and some are rapid. Water is essential for life, but it can also be destructive when too much is deposited too rapidly.
2-3.ES2A. Students know that water plays an essential role in Earth systems, including shaping landforms.
2-3.ES2A.1. Students are expected to identify where natural water bodies occur in the students' local environment.
2-3.ES2B. Students know that water can be a liquid or solid and can go back and forth from one form to another. If water is turned into ice and then the ice is allowed to melt, the amount of water will be the same as it was before freezing. Water occurs in the air as rain, snow, hail, fog, and clouds.
2-3.ES2B.1. Students are expected to describe the various forms and places that water can be found on Earth as liquids and solids (e.g., as liquid in morning dew; in lakes, streams, and oceans; as solid ice at the North and South Poles, and on the tops of mountains; and in the air as clouds, fog, rain, hail, and snow).
2-3.ES2C. Students know that weather changes from day to day and over the seasons. Weather can be described by measurable quantities, such as temperature and precipitation.
2-3.ES2C.1. Students are expected to measure and record changes in weather (e.g., inches of rain using a rain gauge, depth of snow using a ruler, and temperature using a thermometer).
2-3.ES2C.2. Students are expected to interpret graphs of weather conditions to describe with measurements how weather changes from season to season.