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The Earth in Space How it Affects Us

The Earth in Space How it Affects Us. Where does the Big Blue Planet stand in the big picture?. The Earth is the 3rd planet closet to the Sun in our solar system of 9 (8 now I guess)planets. Our solar system is part of the Milky Way galaxy. Earth’s movement:.

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The Earth in Space How it Affects Us

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  1. The Earth in SpaceHow it Affects Us

  2. Where does the Big Blue Planet stand in the big picture? • The Earth is the 3rd planet closet to the Sun in our solar system of 9 (8 now I guess)planets. Our solar system is part of the Milky Way galaxy.

  3. Earth’s movement: • Rotation – the earth spins on its axis once every 24 hours. This allows for equal amounts of access to daylight.

  4. Earth’s movement: • Revolution – the earth revolves around the sun once every 365 ¼ days. This is also referred to as an orbit. The moon orbits us! • https://www.youtube.com/watch?v=qIFRvog_xGU

  5. The Important yet ignored factor! • Tilt – the earth’s axis is tilted 23 ½ degrees perpendicular. • This means that earth wobbles in a sense, as the sun’s rays strike different places on the earth between 23 ½ north and 23 ½ south. • This is the determining factor in the creation of seasons.

  6. How far does it tilt? • 23 ½ degrees N – 23 ½ degrees S: the Tropics (low latitudes) • This area has the most solar energy. • 23 ½ degrees N & S to 66 ½ degrees N & S of the equator is the temperate zones or (middle latitudes) • 66 ½ degrees N & S are the polar regions or (high latitudes)

  7. The bottom line…. • Yes it creates the seasons! • But without tilt, life on earth could not and would not exist!!

  8. When and where of seasons Sun’s rays over the Equator on March 21 or 22 – SPRING (Vernal) EQUINOX (equal night in Latin) Equal amounts of daylight in both Northern and Southern Hemispheres. Marks the beginning of Spring.

  9. It’s still tilting! • Sun’s direct rays over 23 ½ degrees N (Tropic of Cancer) is on June 21 or 22 – SUMMER SOLSTICE • Longest day of the year in daylight hours for Northern Hemisphere. Marks the beginning of summer in the Northern Hemisphere

  10. Tilting away from us • Sun’s direct rays are back over the Equator on September 21 or22 – AUTUMNAL EQUINOX. • Equal amounts of daylight again Northern and Southern Hemispheres. Marks the beginning of Fall.

  11. A new season! • Sun’s direct rays over 23 ½ degrees S (Tropic of Capricorn) is on December 21 or 22 - WINTER SOLSTICE. • Marks the beginning of winter in the Northern Hemisphere.

  12. And finally sort of • It tilts back toward the equator to continue the tilting cycle.

  13. To Summarize: • https://www.youtube.com/watch?v=Pgq0LThW7QA

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