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Understanding Celestial Bodies: The Moon, Earth, and Sun System

Discover the fascinating dynamics of the Moon, Earth, and Sun. This guide explores key astronomical concepts including gravity, orbits, and lunar phases. Learn about the equilibrium state achieved when celestial bodies work together, the cycles of eclipses—solar and lunar—and the effects of lunar gravitational pull on tides. We also delve into essential events such as equinoxes and solstices, which dictate seasonal changes based on Earth's revolution around the Sun. Join us in exploring our cosmic neighbors and their interactions.

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Understanding Celestial Bodies: The Moon, Earth, and Sun System

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Presentation Transcript

  1. Vocabulary Moon, Earth, Sun

  2. System • A collection of parts working together to perform a job.

  3. State of Equilibrium • When the parts work together and the system is stable.

  4. Cycle • A series of events that happen one after another in the same order, over and over again.

  5. Gravity • The force that pulls things toward the center of earth or moon.

  6. Satellite • A heavenly body that moves in an orbit around another larger body.

  7. Lunar Phases • When the moon looks as if it is changing shapes but it is really reflecting various amounts of sunlight during each month.

  8. Orbit • The path an object takes to travel around another object.

  9. Solar Eclipse • When the moon passes directly between the Earth and the Sun which blocks our view of the Sun for a short while. Moon Earth Sun

  10. Lunar Eclipse • When the Earth passes directly between the Sun and the Moon briefly blocking out the Moon. Moon Earth Sun

  11. Rotation • The daily turning of an object around an axis.

  12. Equinox • When the midday Sun crosses the equator.

  13. Solstice • The time when the midday Sun is directly overhead at one of the tropics (Cancer, Capricorn)

  14. Star • A huge ball of hot gas in space.

  15. Sun • The vast fiery ball of gas – a star – that is nearest to Earth and which provides the Earth with energy.

  16. Tide • Rise and fall of ocean water level due to the moon’s gravitational pull.

  17. Season • Caused by the revolution of the Earth around the Sun. • At certain times of the year, the Earth is closer to the Sun than at other times.

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