1. Phases of the Moon By: Nicole Kardos

2. A Relationship between the position of: The Sun The Sun The Earth The Earth and and The Moon The Moon What causes the moon to go through phases?

3. Statistically speaking…. The Sun always shines on the Earth and the Moon The Sun always shines on the Earth and the Moon The cycle of Moon phases occurs every 29.53 days The cycle of Moon phases occurs every 29.53 days ½ of the Moon is always lighted by the sun, ½ of the Moon is always lighted by the sun, ½ is always in darkness ½ is always in darkness This side is lighted This side is dark The phase we see depends on where the moon is in its orbit around the Earth and how much of the lighted side we can see. The phase we see depends on where the moon is in its orbit around the Earth and how much of the lighted side we can see.

4. The Moon revolves counterclockwise around the Earth…..

5. As the Moon revolves around the Earth we see different amounts of the lighted side of the Moon…..

6. 8 Recognized Moon Phases 1. New Moon 2. Waxing Crescent 3. 1 st Quarter 4. Waxing Gibbous 5. Full 6. Waning Gibbous 7. 3 rd or Last Quarter 8. Waning Crescent

7. Recognized Phases

8. Phase: New Moon Waxing Crescent 1 st Quarter Waxing Gibbous Full Moon Waning Gibbous Last Quarter Waning Crescent Back To New Moon

9. Common misconceptions…. The phases are not caused by the shadow of the Earth falling on the moon…. This only happens during a lunar eclipse. The phases are not caused by the shadow of the Earth falling on the moon…. This only happens during a lunar eclipse. The Moon doesn’t produce its own light, we see the light reflected from the Sun bouncing off the Moon. The Moon doesn’t produce its own light, we see the light reflected from the Sun bouncing off the Moon. The same side of the moon always faces the Earth, we never get to see the far side of the moon. The same side of the moon always faces the Earth, we never get to see the far side of the moon. The Moon doesn’t only appear at night, we often see the Moon during the daytime. The Moon doesn’t only appear at night, we often see the Moon during the daytime. Phases are not restricted to the Moon, Venus and Mercury also appear to have phases when observed from the Earth. Phases are not restricted to the Moon, Venus and Mercury also appear to have phases when observed from the Earth. The moon requires 27.3 days to orbit and 29.53 days to go thru its complete phase cycle. The moon requires 27.3 days to orbit and 29.53 days to go thru its complete phase cycle.

10. The table gives a summary of approximately when the Moon is visible and where to look. There are times during the moon's monthly cycle that the Moon is sometimes visible in broad daylight! Phase Ahead or Behind the Sun Rise Time in East Mid-Point In Sky Set Time In West New Within few minutes SunriseNoonSunset 1st Qtr.6 hrs behindNoonSunsetMidnight Full12 hrs behindSunsetMidnightSunrise 3rd Qtr.6 hrs aheadMidnightSunriseNoon Moon Visibility

11. The following websites were used to obtain graphics and information for this presentation: tycho.usno.navy.mil/vphase.html tycho.usno.navy.mil/vphase.html astro.wisc.edu/~dolan/java/MoonPhase.html astro.wisc.edu/~dolan/java/MoonPhase.html enchantedlearning.com/subjects/astronomy/moon/Phases.shtml enchantedlearning.com/subjects/astronomy/moon/Phases.shtml ac.wwu.edu/~stephan/phases.html ac.wwu.edu/~stephan/phases.html astro.umd.edu/education/astro/moon/phases.html astro.umd.edu/education/astro/moon/phases.html co-ops.nos.noaa.gov/astronomical.shtml co-ops.nos.noaa.gov/astronomical.shtml home.hiwaay.net/~krcool/Astro/moon/ home.hiwaay.net/~krcool/Astro/moon/ home.hiwaay.net/~krcool/Astro/moon/ nasa.gov/home/index.html nasa.gov/home/index.html home.hiwaay.net/~krcool/Astro/moon/moonphase/ home.hiwaay.net/~krcool/Astro/moon/moonphase/ home.hiwaay.net/~krcool/Astro/moon/moonphase/ mrescience.com/ mrescience.com/

12. The End……