Adjust properties of the objects to see how changing the properties affects the gravitational attraction. PhET: Gravity Force Lab Visualize the gravitational force that two objects exert on each other.Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it! PhET: Gravity and Orbits Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths.Note that the interactive elements in this sim have simple description that can be accessed using a screen reader. PhET: Friction Move the Chemistry book and observe what happens.Change friction and see how it affects the motion of objects. Create an applied force and see how it makes objects move. PhET: Forces and Motion: Basics Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person.PhET: Faraday's Law Investigate Faraday's law and how a changing magnetic flux can produce a flow of electricity!.Build your own tracks, ramps, and jumps for the skater. PhET: Energy Skate Park - Basics Learn about conservation of energy with a skater gal! Explore different tracks and view the kinetic energy, potential energy and friction as she moves.View the light as a solid beam, or see the individual photons. Change the wavelength of a monochromatic beam or filter white light. PhET: Color Vision Make a whole rainbow by mixing red, green, and blue light. View the circuit as a schematic diagram, or switch to a lifelike view. Determine if everyday objects are conductors or insulators, and take measurements with a lifelike ammeter and voltmeter. Build circuits with batteries, resistors, light bulbs, and switches.
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