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Now for some important (and interesting) information to make sure you have in your MOON BOOK NOTES

You only need to write what is in bold and underlined. Now for some important (and interesting) information to make sure you have in your MOON BOOK NOTES. Moon Info. It takes the same amount of time for the moon to rotate on its axis as it does to revolve around the Earth (27.3 days)

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Now for some important (and interesting) information to make sure you have in your MOON BOOK NOTES

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  1. You only need to write what is in bold and underlined Now for some important (and interesting) information to make sure you have in your MOON BOOK NOTES

  2. Moon Info • It takes the same amount of time for the moon to rotate on its axis as it does to revolve around the Earth (27.3 days) • This is the reason why the Earth only sees one side of the moon – in order to see the other side you need to get on a space ship and go around the moon! • There are 29.5 days from a new moon to the next new moon

  3. Reason for Moon Phase Cycle Length This is showing the cycle from full moon to the next full moon

  4. Moon Info • The lit part of the moonalways points towards the sun. • When waxing: light is on the right • When waning: shadow is on the right http://www.astro.virginia.edu

  5. The moon rise, moon set • The time of the moon rise and set depends on its phase • Rises in the East and sets in the West – due to Earth’s rotation • Remember: moon rises about 50 min later each day of the moon phase cycle (~ 25 to 75 mins) http://aa.usno.navy.mil/cgi-bin/aa_rstablew.pl

  6. Can you identify the phase? Full Last (3rd) Quarter Waxing Gibbous Waning Crescent First Quarter Waning Gibbous New Waxing Crescent

  7. GOOOO G-Men!

  8. Tides • Tides are the rise and fall of water – rise for about 6 hours then fall for about 6 hours • Tides occur because the moon’s gravity does not pull with the same force on all parts of the Earth http://serc.carleton.edu

  9. High Tides C • Location A: Moon’s gravitational force on the water is greater than its force on the Earth as a whole • Water here is pulled more towards the moon than the Earth = high tide B A D

  10. High Tides • Location B: The moon’s gravitational force on the Earth as a whole is stronger than its force on the water • The Earth is pulled more towards the moon and the water is “left behind” = high tide C B A D

  11. Low Tides • Locations C and D: Water flows away from these locations towards points A and B = low tide C B A D

  12. Spring and Neap • The Sun’s gravity also pulls on Earth’s waters • Sometimes the sun’s and moon’s gravity work together (spring tide) • Sometimes they pull on the water at right angles (neap tide) • Spring and Neap tides both happen twice a month

  13. Spring Tide • during full & new moons • highest high tides & lowest low tides • Greatest tidal range (difference between high and low tide) http://www.huntsmanmarine.ca

  14. Neap Tide • Neap tide: during first & last quarter moons • lowest high tides & highest low tides • Smallest tidal range http://www.huntsmanmarine.ca

  15. Shadows • Umbra: darkest part of shadow: this shadow causes total eclipses • Penumbra: Outer, less dark shadow

  16. Lunar Eclipse • Moon in Earth’s shadow (Earth blocking sunlight from hitting Moon) • Earth cannot “see” the moon • Order: Sun, Earth, Moon • Do not have an eclipse every full moon because moon’s orbit is at an angle Moon

  17. Lunar Eclipse • Total: Moon entirely in Earth’s umbra • Partial: Moon partially in Earth’s umbra • Penumbral: Moon in Earth’s penumbra Moon

  18. Lunar Eclipse • Eclipsed moon looks redish orange (rust) because some sunlight bends as it passes through Earth’s atmospherebefore hitting the moon

  19. Lunar Eclipse • Last total lunar eclipse was on February 20, 2008 • Last partial – June 26, 2010 (we couldn’t see this in CT) • Next total eclipse on Dec 21, 2010 • Generally 2 eclipses (total, partial or penumbral) a year http://www.jsu.edu

  20. Picture of the entire length of March 2007’s Eclipse Stefan Seip (TWAN)

  21. Solar Eclipse • Earth is in moon’s shadow (moon blocking sunlight from hitting Earth) • Earth cannot “see” the sun • Order: Sun, Moon, Earth

  22. Solar Eclipse • Total: Earth in Moon’s umbra • Partial: Earth in Moon’s penumbra

  23. Total Solar Eclipse – you see the Sun’s Corona http://www.astropix.com

  24. Pictures of Annular Eclipses • Annular: moon is at a point where it is not big enough to block all of the sunlight: a ring of sunlight is visible http://www.astronomy.com

  25. Solar Eclipse • Last total eclipse = Jul 11, 2010 – seen in Chile • There are only partial eclipses in 2011 • Next total eclipse = Nov 13, 2012– seen in Australia • Next eclipse visible in Eastern USA – a partial eclipse in 2014 • There can be 2 - 4 eclipses (total, partial or annular) a year (at most 5) http://www.astro.uva.nl

  26. Solar Eclipse • Anyone in the dark blue saw a total eclipse

  27. Eclipses 2010

  28. Eclipses 2011

  29. List of Eclipses

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