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You only need to write what is in bold and underlined.

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Presentation on theme: "You only need to write what is in bold and underlined."— Presentation transcript:

1 You only need to write what is in bold and underlined

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 moon always points towards the sun.  When waxing: light is on the right  When waning: shadow is on the right

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) PhaseRise TimeMidpoint in skySet Time NewSunriseNoonSunset 1 st quarter Noon SunsetMidnight FullSunsetMidnightSunrise 3 rd quarterMidnightSunriseNoon

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

9 High Tides  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 A D B C

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 A D B C

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

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)

14 Neap Tide  Neap tide: during first & last quarter moons  lowest high tides & highest low tides  Smallest tidal range

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 atmosphere before 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

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

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

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 eclipses (total, partial or annular) a year (at most 5)

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

27 Eclipses 2010 Solar and Lunar Eclipses of 2010 Annular Solar Eclipse of 2010 Jan 15 Partial Lunar Eclipse of 2010 Jun 26 Total Solar Eclipse of 2010 Jul 11 Total Lunar Eclipse of 2010 Dec 21

28 Eclipses 2011 Solar and Lunar Eclipses of 2011 Partial Solar Eclipse of 2011 Jan 04 Partial Solar Eclipse of 2011 Jun 01 Total Lunar Eclipse of 2011 Jun 15 Partial Solar Eclipse of 2011 Jul 01 Partial Solar Eclipse of 2011 Nov 25 Total Lunar Eclipse of 2011 Dec 10

29 List of Eclipses


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