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Phases of the Moon
Why we see What we see When we see it!
There is a METHOD to the MADNESS!
SPI and Objective
• S2005(6) 9. Identify the moon's phases.
• Objective: Identify all 8 phases of the moon.
Moon Facts• The moon is not stationary! It revolves around
the Earth.
• The moon orbits around our planet.
• Light from the moon is a reflection of light from the Sun.
Our Month• It takes the moon approximately
29 days to orbit the Earth.
• That’s about
one Earth MONTH
(a lunar month!)
The Moon’s Phases
• There are 8 phases of the moon.
• Each phase lasts for 3-4 days
The basic phases: New moon
When it happens: Beginning of the Lunar month. (Day 1-2)What we see: We see the unlit side of the moon.
What it looks like: New Moon
Look from Earth
The basic phases: Full Moon
When we see it: Middle of the Month (day 14-15)What we see: We see the lit side of the moon
What it looks like: Full moon
Look from Earth
Quarter Moon
• We see half of the moon lit.
• Quarter moon occurs halfway between New Moon and Full moon
• We call the quarter moons First Quarter and 3rd/Last Quarter.
First Quarter
Look from Earth
Last Quarter
Look from Earth
What it looks like
Mini Quiz• ____ New Moon ____ Full Moon
A. B.
Professor Quizmo• A. New Moon• B. Full Moon
__Which phase occurs in the middle of a month?
__Which phase occurs in the beginning of a month?
__When we see the unlit portion of the moon.
__ When the whole moon is illuminated.
Let’s See What U HaveLearned
The Phases In Between• The phases in between are named by how
much light they have and their shape.
The Waxing Phases• Waxing means “Growing.” (Light on Right)
• From Day 1 to Day 15 the moon appears to be growing.
• Waxing Crescent
• Waxing Quarter (Half)
• Waxing Gibbous
New Moon to Full Moon• Beginning of Month to the Middle of Month
– Day 1-15
Mini Quiz____ Waxing Crescent
____ 1st Quarter (Half)
____ Waxing Gibbous
A. B. C.
Professor QuizmoThe word “Waxing” means __________.
The next phase after the new moon is called __________ ___________.
The phase just before the full moon is called the ___________ ___________.
The Waning Phases• Waning means “Shrinking.”• From Day 15 to Day 29 the moon appears
to be shrinking.
• Waning Gibbous
• Waning 3rd Quarter
• Waning Crescent
Full Moon to New Moon
•From Middle of Month to the Beginning of New Month• Day 16-Day 29
Mini Quiz____ Waning Crescent
____ Waning 3rd Quarter (Half)
____ Waning Gibbous
A. B. C.
Professor QuizmoThe word “Waning” means __________.
The next phase after the full moon is called __________ ___________.
The phase just before the new moon is called the ___________ ___________.
Contrast: Waxing & Waning
WaxingWaning
Lit on RightSide of Moon
Lit on the LeftSide of Moon
The Big Picture