Lunar eclipses | The Earth-sun-moon system | Middle school Earth and space science | Khan Academy скачать в хорошем качестве

Lunar eclipses | The Earth-sun-moon system | 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/m... A lunar eclipse occurs when Earth casts a shadow on the moon. When the shadow fully covers the moon, the eclipse is total. When the shadow partially covers the moon, the eclipse is partial. Lunar eclipses can occur only during a full moon, when the moon and the sun are on opposite sides of Earth. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. 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 Volunteer here: https://www.khanacademy.org/contribute