it takes 29 ½ days – almost 1 month – for the moon to move (revolve) around the earth
TRANSCRIPT
It takes 29 ½ days – almost 1 month – for the moon to move (revolve) around the
Earth.
The moon does not make any light of its own. The lighted parts that we see are
called phases.
The moon reflects light from the sun.
As the moon moves
(revolves) around the
Earth, it looks like it
has different shapes. The shape of the moon does not really change. It
just changes its location in space.
Half of the Moon is always lit up by the sun. As the Moon orbits the Earth, we see
different parts of the lighted area.
http://www.nasm.si.edu/apollo30th/moontheater/phasepage2.html
Phases of the Moon
Sunlight
Sunlight
(1) New Moon
(2)
Waxing Crescen
t (3) First Quarter
(4) Waxing Gibbous
(5) Full Moon
(6) Waning Gibbous
(7) Third Quarter
(8) Waning
Crescent
Earth
The general locations and
orientations for the phases of
the moon.
Earth spins on its axis in the
same direction as the moon’s
orbit.
Sunlight
Sunlight
Earth
(1) New Moon
New moon is when the moon is
between the sun and the
earth
What time of day is it for the
observer?
Noon!!
NEW MOON Wherever the person
looks all they see is shadowed
moon.
Perspective & The Moon’s Face
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth
(2) Waxing Crescent
Waxing means getting bigger/ Growing
What time of day is it for the
observer?
3PM!!
WAXING CRESCENT
When you look up you see only a small crescent
brightly lit. (Right Side)
Perspective & The Moon’s Face
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth
(3) First Quarter
The moon is ¼ of the way around the
earth
What time of day is it for the
observer?
Sunset - 6PM!!
FIRST QUARTER When you look up you see one half of the front
face of the Moon brightly lit. (Right side)
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth
(4) Waxing Gibbous
Moon is getting
closer to being a full
moon
What time of day is it for the
observer?
9PM!!
WAXING GIBBOUS When you look up you see only a small crescent, darkly shadowed, on
the left.
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth(5) Full Moon
The earth is between the
sun and moon
What time of day is it for the
observer?
Midnight-12AM!!
FULL MOON When you look up you see the entire face of
the Moon brightly lit.
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth
(6) Waning Gibbous
Waning means getting smaller
What time of day is it for the
observer?
3AM!!
WANING GIBBOUS When you look up you see only a small crescent, darkly shadowed, on
the right.
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth
(7) Third Quarter
The moon is ¾ of the way around the
Earth
THIRD QUARTER When you look up you see one half of the front
face of the Moon brightly lit. (Left side)
What time of day is it for the
observer?
Sunrise - 6AM!!
Perspective & The Moon’s Face
Sunlight
Sunlight
Earth
(8) Wanin
g Cresce
nt
We see this right before a new moon
WANING CRESCENT When you look up you see only a small
crescent brightly lit. (Left
Side)
What time of day is it for the
observer?
9AM!!
Complete this
Moon Phase Moon Rise Time
New Moon Sunrise/6am
Waxing Crescent 9am
First Quarter 12pm
Waxing Gibbous 3pm
Full Moon 6pm
Waning Gibbous 9pm
Third Quarter 12am
Waning Crescent 3am
Say, Sun rises at 6am and sets at 6pm
Now we see a new moon again.
It takes the moon about 1 month (29 ½ days) to go through the phases
Eclipses
• Have you seen eclipses?• What are eclipses in nature?
• One celestial object casts its shadow on the other one
Solar Eclipses
• Sun – the shadow of the moon on the earth
Total solar eclipse in 1999
A – total eclipseB – annular eclipseC – partial eclipse
Lunar Eclipses
• Moon – the shadow of the earth on the moon
Lunar Eclipse
Eclipses Cycle
• Every year there are at least two lunar eclipses• Lunar eclipses and solar eclipses always come
in pairs• Lunar eclipses can be seen everywhere on the
earth, but the solar eclipses may only be seen on part of the earth
What phase is the moon?
What time of day will this moon phase be high in the sky? (meridan)
What time will this moon phase set?
What time will this moon rise?
What phase is the moon?
What time of day will this moon phase be high in the sky? (meridan)
What time will this moon phase set?
What time will this moon rise?
