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Earth and Its Uniqueness

Earth and Its Uniqueness. Sec. 2.1 Earth Essentials. “I CAN” Explain Why Earth has A Day & Night Explain How The Changing Angles Of Sunlight Produce The Seasons. Location in our Solar System. Third planet in an eight planet solar system Goldie Locks Principal

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Earth and Its Uniqueness

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  1. Earth and Its Uniqueness

  2. Sec. 2.1 Earth Essentials “I CAN” • Explain Why Earth has A Day & Night • Explain How The Changing Angles Of Sunlight Produce The Seasons

  3. Location in our Solar System • Third planet in an eight planet solar system • Goldie Locks Principal • Not to hot and not to cold, just right • 93 million miles from the sun or 1AU • Currently only planet known to have life • Water exists in three physical states

  4. Biosphere 73% Of Earth’s surface Is water 97% of all water is marine or salt water One world ocean divided into the Atlantic Pacific Indian Arctic Southern or Antarctic

  5. Earth’s earth covers 28% of Surface Divided into Continents N. America S. America Europe – Asia (Eurasia) Africa Australia Antarctica

  6. Atmospheric Gases 78% Nitrogen 21% Oxygen 1% other gases Carbon Dioxide .03 % Argon Xenon Methane Ozone Krypton Hydrogen

  7. Earth’s “Rotation”

  8. Earth’s “Revolution”

  9. Earth’s Seasons

  10. The MoonWhat Do We Know? • Brightest Object In The Night Sky but It Does Not Produce It’s Own Light. • Travels Around The Earth Every 29 1/2 days • The Sky is Always Black & Stars Are Always Out • It Took The Apollo Astronauts 3 days To Arrive • At Night Temp. Is -200F and In Day +212F • No Air, Wind, Water, Life & 1/6th Gravity

  11. Moon Phases or Cycles Moon Rises slightly later every day & in a slightly different location on the horizon

  12. Moon Phases

  13. The Moon and Tides

  14. Eclipses

  15. Eclipses

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