WA.4. Earth and Space Science
ES1. Earth in Space
4-5.ES1. Earth in Space: In prior grades students learned that observing and recording the position and appearance of objects in the sky make it possible to discover patterns of motion. In grades 4-5 students learn the full implications of the spherical-Earth concept and Earth's place in the Solar System. The upper elementary years are an excellent time for study of the Earth in space because students have the intellectual capacity to grasp the spherical-Earth concept and the relationship between the Earth and Sun. This major set of concepts is a stepping-stone to a later understanding of all concepts in astronomy and space science and an essential element to further understanding of how the Earth and other planets formed.
4-5.ES1B. Students know that earth's daily spin relative to the Sun causes night and day.
4-5.ES1B.1. Students are expected to use a physical model or diagram to show that Earth's spin causes night and day.
WA.4. Life Science
4-5.LS2. Food Webs: In prior grades students learned that ecosystems include both plant and animal populations as well as nonliving resources, and that plants and animals depend on one another and on the nonliving resources in their ecosystem to survive. In grades 4-5 students learn how ecosystems change and how these changes affect the capacity of an ecosystem to support populations. Some changes in ecosystems are caused by the organisms themselves. The ability of any organism to survive will depend on its characteristics and behaviors. Humans also play an important role in many ecosystems and may reduce negative impacts through thoughtful use of natural resources. Concepts related to ecosystems, including food webs, make it possible for students to understand the interrelationships among various forms of life and between living things and their environment.
4-5.LS2F. Students know that people affect ecosystems both positively and negatively.
4-5.LS2F.2. Students are expected to describe ways that humans can harm the health of ecosystems (e.g., overuse of fertilizers, littering, not recycling)