Simulations for grades 9 and 10 science. For instructions how to load them onto your computer, see the 11/12 simulations page.
Simulates ray diagrams and images for plane, concave and convex mirrors.
Animation of the life cycle of a small star and large star. This simulation also magnifies scale models of the universe from a single proton up to the size of the observable universe.
Hover over different objects to read descriptions of the key players of the nitrogen cycle.
This app demonstrates the cause of daytime/nighttime, the seasons, solar and lunar eclipses, and solar and lunar tides.
Study the planets, retrograde motion, planetary scales, and the scale of the solar system with this simple app. Designed for grade 9 Astronomy.