Tides - rise and fall of oceans due to gravitational pull from the sun & moon, Spring Tide - straight line- more extreme tides (low tide), Neap Tide - ninety degrees- less extreme tides (high tides), Sputnik 1 - first main made object launched into space in 1957 by USSR, Apollo 11 - First mission that sent people to moon, Rotation - Earth's sspin on axis (24 hours) creates day and nights, Revolution - Earth's path around the Sun - takes one year, Seasons - warmer and cooler climates created by the tilt of the earth, Waxing - changes from all dark to all light "waxing is maxing", Waning - changes from all light to all dark "waning is draining", Terrestrial Planets - First four planets, rocky exterior, Gas Giants - last four planets, made of gas, Asteroid Belt - separates terrestrial planets and gas giants, Sun - where the earth gets it's energy, Telescope - tool that uses lenses or mirrors to observe distant objects,

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