Download Our Moon

The
Moon
A look at our
nearest
neighbor in
space!
What is the Moon?
1. A natural satellite
2. One of more than 96
moons in our Solar System
3. The only moon of the
planet Earth
4. Named Luna
Location, location, location!
1. About 240,000
miles from Earth
• 2,155 miles in
diameter (about ¼
the size of Earth)
The Moon’s Surface
1. No atmosphere
2. No liquid water
3. Extreme
temperatures
– Daytime = 265°F
– Nighttime = -310 F
Lunar Features - Craters
1. Up to 2500 km (1,553 miles) across
2. Most formed by meteorite impact on the Moon
3. Some formed by volcanic action inside the
Moon
Movements of the Moon: About
28 days in the cycle
1. Revolution – Moon
orbits the Earth every
27 1/3 days
2. The moon rises in the
east and sets in the
west
3. The moon rises and
sets 50 minutes later
each day
4. Rotation – Moon
turns on its axis every
27 days
5. Same side of Moon
always faces Earth
Far Side of the Moon
1. First seen by Luna
3 Russian space
probe in 1959
2. Surface features
different from near
side
1. More craters
2. Thicker crust
It’s Just a Phase
1. Moonlight is reflected
sunlight
2. Half the moon’s
surface is always
reflecting light
3. From Earth we see
different amounts of
the Moon’s lit surface
4. The amount seen is
called a “phase”
Waxing and Waning
•
•
•
•
•
•
•
•
•
New moon
Waxing Crescent
moon
First Quarter moon
Waxing Gibbous
moon
Full moon
Waning Gibbous
moon
Third Quarter moon
Waning Crescent
moon
New moon
1. Waxing- Lit side getting larger.
2. Waning- Lit side getting smaller.
What you see in the boxes is the view of the Moon as WE SEE IT FROM
EARTH!!
Moon Phase Animation Links
• http://www.noao.edu/education/phases/phas
es_demo.html#ani
• http://www.valdosta.edu/~cbarnbau/astro_d
emos/frameset_moon.html
• Interactive cartoon animation:
– http://www.wonderville.ca/v1/activities/phases/
phases.html
Lunar Eclipses
1. Moon moves into
Earth’s shadow –
this shadow
darkens the Moon
A. Umbra
B. Penumbra
2. About 2-3 per year
3. Last up to 4 hours
Partial Lunar Eclipse of June 26 ; Total Lunar
Eclipse of December 21
Lunar Eclipse
• Umbra1.
Umbra-a region of the shadow where the Earth blocks all
direct sunlight from reaching the Moon.
Umbra
2. Penumbra-a region of shadow where the Earth blocks part
but not all of the Sun's rays from reaching the Moon
Directions: Label the lunar eclipse below. Label each of the highlighted terms below. Earth - the
planet on which we live.
Moon - the natural satellite of the Earth. Penumbra - the area in which the shadow of an object (in
this case, the Earth on the moon) is partial. Sun - the star in our Solar System. Umbra - the area in
which the shadow of an object (in this case, the Earth on the moon) is total. When the entire moon
is in the Earth's umbra, we experience a total lunar eclipse. When part of the moon is in the Earth's
umbra, we experience a partial lunar eclipse.
Solar Eclipses
1. Moon moves
between Earth and
Sun
2. Moon casts a
shadow on part of
the Earth
3. Total eclipses rare
– only once every
360 years from one
location!
1. Umbra- a region of the shadow where the Earth
blocks all direct sunlight from reaching the Moon.
2. Penumbra- a region of shadow where the Earth
blocks part but not all of the Sun's rays from
• The next solar eclipse that can be seen
in the U.S. will be Aug 21, 2017 and will
go from Oregon to South Carolina.
Earth - the planet on which we live. Moon - the natural satellite of the Earth.
Penumbra - the area in which the shadow of an object (the moon on the Earth) is partial, and the area
in which a partial solar eclipse is experienced. Sun - the star in our Solar System.
Umbra: the area in which the shadow of an object (the moon on the Earth) is total, and the area in
which a total solar eclipse is experienced.
The Tides
1. Tides caused by pull of Moon’s gravity on Earth
2. High tide –
1. Side facing Moon and side away from Moon
2. Every 12 hours, 25 ½ minutes
3. Low tide –
1. On sides of Earth
1. 1950s to 1960s probes
2. Neil Armstrong
First man on the
Moon – July 20,
1969
3. Six Apollo missions
(1969-1972) 842
lbs rocks
4. 12 Americans have
walked on the
moon
Exploring the
Moon
When will we return?
Moon base of the future?
• What would you need to live there?
Name this phase!
Full Moon
Name this phase!
First Quarter
Name this phase!
Waxing Crescent
Name this phase!
Waning
Gibbous
Name this
phase!
Third Quarter
Name this phase!
Waxing Gibbous
Name this phase!
Waning Crescent
What might be happening in this image?
Lunar Eclipse
Name this phase!
Look closely!
Waxing Gibbous
Name this phase!
Full Moon
Name this phase!
New Moon
Name this phase!
Waning Gibbous
Name this
phase!
Waning Crescent
Photo resources
• http://www.nasm.si.edu/apollo/AS15/a15images.ht
m
• http://nssdc.gsfc.nasa.gov/photo_gallery/photogall
ery-moon.html#apollo
• http://clementine.cnes.fr/index.en.html
• http://cass.jsc.nasa.gov/pub/research/clemen/cleme
n.html
• http://spaceflightnow.com/news/n0108/15mooncre
ate/
• http://seds.lpl.arizona.edu/nineplanets/nineplanets/
pxmoon.html
More photo resources
• http://www.nrl.navy.mil/clementine/clemovies/cle
movies_index.html
• http://www.solarviews.com/eng/moon.htm
• http://news.bbc.co.uk/1/hi/sci/tech/620649.stm
• http://skyandtelescope.com/observing/objects/ecli
pses/article_99_1.asp
• http://lunar.arc.nasa.gov/results/ice/eureka.htm
• http://www.space.com/scienceastronomy/solarsyst
em/moon_nss_020604.html