Galaxies and gravity | Earth in space | Middle school Earth and space science | Khan Academy Khan Academy 3:56 2 years ago 17 807 Скачать Далее
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Introduction to Middle school Earth and space science | Khan Academy Khan Academy 2:51 1 year ago 6 846 Скачать Далее
Earth's place in the universe | Middle school Earth and space science | Khan Academy Khan Academy 4:54 2 years ago 13 771 Скачать Далее
Seasons | The Earth-sun-moon system | Middle school Earth and space science | Khan Academy Khan Academy 5:06 2 years ago 72 400 Скачать Далее
Phases of the moon | Middle school Earth and space science | Khan Academy Khan Academy 4:14 2 years ago 48 293 Скачать Далее
Lunar eclipses | The Earth-sun-moon system | Middle school Earth and space science | Khan Academy Khan Academy 2:07 2 years ago 15 285 Скачать Далее
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Introduction to plate tectonics | Middle school Earth and space science | Khan Academy Khan Academy 4:36 2 years ago 25 745 Скачать Далее
Weathering and erosion | The geosphere | Middle school Earth and space science | Khan Academy Khan Academy 4:38 2 years ago 14 366 Скачать Далее
Carl Sagan teaching students about the Milky Way galaxy carlsagandotcom 0:59 1 year ago 451 319 Скачать Далее
Plate tectonics and the ocean floor | Middle school Earth and space science | Khan Academy Khan Academy 4:00 2 years ago 19 693 Скачать Далее
Global winds and currents | Middle school Earth and space science | Khan Academy Khan Academy 5:56 2 years ago 42 169 Скачать Далее
The water cycle | Weather and climate | Middle school Earth and space science | Khan Academy Khan Academy 4:27 2 years ago 38 888 Скачать Далее
Solar eclipses | The Earth-sun-moon system | Middle school Earth and space science | Khan Academy Khan Academy 3:20 2 years ago 21 304 Скачать Далее
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Human impacts on the environment | Middle school Earth and space science | Khan Academy Khan Academy 5:08 1 year ago 15 587 Скачать Далее