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EARTH, MOON & SUN

EARTH, MOON & SUN. Write Everything in BLUE. Earth’s Rotation. The Earth’s axis is an imaginary line that runs through the center of the Earth The Earth rotates on its axis making a complete circle in 24 hours Rotation is what causes day and night

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EARTH, MOON & SUN

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  1. EARTH, MOON & SUN Write Everything in BLUE

  2. Earth’s Rotation The Earth’s axis is an imaginary line that runs through the center of the Earth The Earth rotates on its axis making a complete circle in 24 hours Rotation is what causes day and night Earth’s tilted axis is what causes the seasons

  3. Earth’s Revolution Revolution is how the Earth revolves around the sun One complete revolution takes 1 year The tilt of the Earth’s axis means that for part of the year, the Northern Hemisphere is pointed towards the sun and the other part of the year it is tilted away from the sun

  4. Solstice Winter Solstice Solstice occurs when the sun is directly overhead at noon at 23.5° N or 23.5° S latitude June 21st – the sun is overhead in the Northern Hemisphere so the daylight hours are the longest December 21st - the sun rays are indirectly hitting the Northern Hemisphere so the daylight hours are the shortest

  5. Equinox • Equinox occurs when the daylight hours and night hours are exactly the same • The sun is directly overhead at noon at the equator • Vernal equinox occurs on March 21 and marks the beginning of spring • Autumnal equinox occurs on September 23 and marks the beginning of fall

  6. Phases of the Moon • The positions of the moon, Earth, and the sun causes the phases of the moon, tides, & eclipses. • The moon revolves around the Earth in about 27 days • We always see only the near side of the moon • The moon reflects the light of the sun • We see different shapes of the moon due to the positions of the moon, Sun & Earth

  7. Serpent Mound, Ohio • Each curve of the snake represents a direct alignment of the sunset or sunrise on the day of a solstice or equinox

  8. Phases of the Moon Draw Each of the Moons on the Following Slides!

  9. Moon Phases Full Moon – we see the whole lighted area of the moon

  10. Moon Phases Waning Gibbous – the moon will seem to get a little smaller

  11. Moon Phases Third or Last Quarter – You can see half of the moon’s lighted side (the left side)

  12. Moon Phases • Waning Crescent – You see a very small portion of the moon resembling a crescent

  13. Moon Phases New Moon – the sun lights the side of the moon that faces away from the Earth so we don’t see anything

  14. Moon Phases • Waxing Crescent – You see more of the moon -the right side of the crescent

  15. Moon Phases • First Quarter – You see the right half of the lighted moon

  16. Moon Phases • Waxing Gibbous – the amount of the right side of the moon that we see continues to grow

  17. Eclipses An eclipse occurs when an object in space comes between the sun and another object

  18. Solar Eclipse • A solar eclipse occurs when the new moon passes between the sun and Earth • umbra – the darkest part of the moon’s shadow which results in a total solar eclipse • penumbra – the larger part of the moon’s shadow which results in a partial eclipse

  19. Lunar Eclipse • A lunar eclipse occurs when the Earth comes between a full moon and the sun

  20. The Moon • The moon is ¼ the size of Earth • In 1609 Galileo made a telescope and was the first person to view a close-up of the moon • The dark spots on the moon are low dry areas • Craters on the moon are the result of meteor impacts

  21. Mission to Space Neil Armstrong The USSR “Sputnik” was the first satellite to orbit the Earth in 1957 Yuri Gagarin was the first person to orbit the Earth In July 1969, Apollo 11 carried the first men to the moon Neil Armstrong and Buzz Aldrin were the first men to step on the moon

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