The tides | Middle school Earth and space science | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/g... Earth’s tides are caused by the gravitational attraction of the Moon and Earth. This net force creates a tidal bulge that moves across Earth’s oceans, creating predictable cycles of low and high tide. Spring tides and neap tides are caused by particular configurations of the Earth-Sun-Moon system. Next Generation Science Standards (NGSS): MS-ESS1-1, MS-ESS2-4, MS-ESS1.B. Sections: 00:00 Intro 00:56 Understanding gravity 02:36 Understanding tidal forces 04:28 Tidal forces on Earth due to Moon 05:27 What causes high and low tides on Earth 07:30 Why tides occur in oceans (but not lakes or rivers) 08:09 Spring tides and Neap tides 09:48 Summary ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?ut... Volunteer here: https://www.khanacademy.org/contribut...