CK-12 Foundation
Revolutions of Earth: Tidal Locking
Need a hands-on activity that tests your scholars' knowledge of the relationship between Earth and the moon? This interactive has it on lockdown! Science scholars manipulate the moon in its path around Earth, then answer multiple-choice...
PHET
Gravity And Orbits
Have you ever wanted to turn off gravity? This simulation allows learners to do just that in addition to altering other variables. Scholars can move the sun, Earth, moon, and space station to see how distance affects gravitational pull....