| National Standards | State Standards | SFUSD Standards |
| D3a* The earth is the third planet from the sun in a system that includes the moon, the sun, eight other planets and their moons, and smaller objects, such as asteroids and comets. The sun, an average star, is the central and largest body in the solar system. | 5.5a. the sun, an average star, is the central and largest body in
the solar system and is composed primarily of hydrogen and helium.
5.5b. the solar system includes the Earth, moon, sun, eight other planets and their satellites, and smaller objects such as asteroids and comets. 8.4b. the sun is one of many stars in our own Milky Way galaxy. Stars may differ in size, temperature, and color. |
NOT PRESENT IN SFUSD STANDARDS |
| D3b* Most objects in the solar system are in regular and predictable motion. Those motions explain such phenomena as the day, the year, phases of the moon, and eclipses. | 5.5. The solar system consists of planets and other bodies that orbit the sun in predictable paths. | NOT PRESENT IN SFUSD STANDARDS |
| D3c* Gravity is the force that keeps planets in orbit around the sun and governs the rest of the motion in the solar system. Gravity alone holds us to the earth's surface and explains the phenomena of the tides. | 5.5c. the path of a planet around the sun is due to the gravitational attraction between the sun and the planet. | Content Standard 18: Students understand that all celestial bodies in the universe are bound together by gravitation, the force of attraction that every mass in the universe exerts on each other. |
| D3d* The sun is the major source of energy for phenomena on the earth's surface, such as growth of plants, winds, ocean currents, and the water cycle. Seasons result from variations in the amount of the sun's energy hitting the surface, due to the tilt of the earth's rotation on its axis and the length of the day. | 5.4. Energy from the sun heats the Earth unevenly, causing air movements resulting in changing weather patterns. (partial) | NOT PRESENT IN SFUSD STANDARDS |
| NOT PRESENT IN NATIONAL STDS | 8.4. The structure and composition of the universe can be learned
from the study of stars and galaxies, and their evolution. As a basis for
understanding this concept, students know:
8.4a. galaxies are clusters of billions of stars, and may have different shapes. 8.4c. how to use astronomical units and light years as measures of distance between the sun, stars, and Earth. 8.4d. stars are the source of light for all bright objects in outer space. The moon and planets shine by reflected sunlight, not by their own light. 8.4e. the appearance, general composition, relative position and size, and motion of objects in the solar system, including planets, planetary satellites, comets, and asteroids. |
NOT PRESENT IN SFUSD STANDARDS |
9/30/99