SPI 6.4 Explain the different phases of the moon using a ...
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SPI 6.4 Explain the different phases of the moon using a model of the earth, moon, and sun.
Transcript of SPI 6.4 Explain the different phases of the moon using a ...
SPI 6.4
Explain the different phases of the moon using a model of the
earth, moon, and sun.
Months: Lunar CalendarWe can keep track of months in the year by the phases of the moon (lunar calendar).The phases begin with the “new moon.”
Months: Lunar CalendarAs the Moon moves around the Earth, we get to see more and more of the illuminated surface. We see the following phases:Day 4- waxing crescentDay 7- first quarter (half moon)Day 10- waxing gibbous.
Months: Lunar CalendarTwo weeks after the new moon (third week), the moon is now halfway through its revolution, and now the illuminated half coincides with the one facing the Earth, so that we can see a full disk: we have a full moonon day 14.
Months: Lunar Calendar From now on, until it becomes new
again, the illuminated part of the Moon that we can see decreases, and we can see the following: Day 18- waning gibbousDay 22- Third Quarter (half moon)Day 26- waning crescent
Months: Lunar CalendarA while after four weeks (29.5
days, more precisely) the illuminated half of the Moon again faces away from us, and we come back to the beginning of the cycle: a new moon.
1. New MoonThe side that Earth sees is completely dark.
No Light Seen
Completely Dark
2. Waxing Crescent
Right side is seen.Less than Half.
The moon goes from nothing seen to less than half
3. 1st Quarter (Half Moon)
Right side is seen.Exactly Half.
The moon that we see is exactly half
4. Waxing Gibbous
Right side is seen.More than Half.
The moon goes exactly half to almost totally seen
5. Full MoonThe side that Earth sees is completely illuminated.
All Surface is Seen.Completely Illuminated.
6. Waning Gibbous
Left side is seen.More than Half.
The moon goes from Full to almost half
7. 3rd Quarter (Half Moon)
Left side is seen.Exactly Half.
The moon that we see is exactly half
8. Waning Crescent
Left side is seen.Less than Half.
The moon goes from exactly half to almost completely dark
How to figure out the moon phase
4. Label remaining phases: Crescent & Gibbous
3. Figure out which direction the moon is revolving. (counterclockwise) Think face of a clock! Label waxing and waning.
5. Answer the Question!
2. Find and label New moon. Find and label Full moon. Find and label the Quarters.
1. Locate the Sun and Earth. Label them!
SUNEarthNew MoonFull Moon
Quarter
Quarter
Waxing
Waning
CrescentGibbous
Gibbous Crescent
Which best shows the location of the 3rd quarter moon?
