The moon
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The Moon. A look at our nearest neighbor in Space!. Free powerpoints at http://www.worldofteaching.com. What is the Moon?. A natural satellite One of more than 96 moons in our Solar System The only moon of the planet Earth. Location, location, location!.

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The Moon

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The moon

The Moon

A look at our nearest neighbor in Space!

Free powerpoints at http://www.worldofteaching.com


What is the moon

What is the Moon?

  • A natural satellite

  • One of more than 96 moons in our Solar System

  • The only moon of the planet Earth


Location location location

Location, location, location!

  • About 384,000 km (240,000 miles) from Earth

  • 3,468 km (2,155 miles) in diameter (about ¼ the size of Earth)


The moon s surface

The Moon’s Surface

  • No atmosphere

  • No liquid water

  • Extreme temperatures

    • Daytime = 130C (265°F)

    • Nighttime = -190C (-310 F)

  • 1/6 Earth’s gravity


Lunar features highlands

Lunar Features - Highlands

  • Mountains up to 7500 m (25,000 ft) tall

  • Rilles (trenchlike valleys)


Lunar features craters

Lunar Features - Craters

  • Up to 2500 km (1,553 miles) across

  • Most formed by meteorite impact on the Moon

  • Some formed by volcanic action inside the Moon


Lunar features maria

Lunar Features - Maria

  • Originally thought to be “seas” by early astronomers

  • Darkest parts of lunar landscape

  • Filled by lava after crash of huge meteorites on lunar surface 3-4 billion years ago

  • Mostly basalt rock


The moon

Craters

Can you see the rays?

Maria

Does this photo show us a limb or terminator line?


Movements of the moon

Movements of the Moon

  • Revolution – Moon orbits the Earth every 271/3 days

  • The moon rises in the east and sets in the west

  • The moon rises and sets 50 minutes later each day

  • Rotation – Moon turns on its axis every 27 days

  • Same side of Moon always faces Earth


Far side of the moon

Far Side of the Moon

  • First seen by Luna 3 Russian space probe in 1959

  • Surface features different from near side

    • More craters

    • Very few maria

    • Thicker crust


It s just a phase

It’s Just a Phase

  • Moonlight is reflected sunlight

  • Half the moon’s surface is always reflecting light

  • From Earth we see different amounts of the Moon’s lit surface

  • The amount seen is called a “phase”


Waxing and waning

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


The moon

FOUR MAIN SHAPES

FULL

CRESCENT

Four Basic Shapes

GIBBOUS

QUARTER


New moon

New Moon

The lighted side of the Moon faces away from the Earth.  This means that the Sun, Earth, and Moon are almost in a straight line, with the Moon in between the Sun and the Earth.  The Moon that we see looks very dark


New moon1

New Moon


First quarter moon

First Quarter Moon

The right half of the Moon appears lighted and the left side of the Moon appears dark.  During the time between the New Moon and the First Quarter Moon, the part of the Moon that appears lighted gets larger and larger every day, and will continue to grow until the Full Moon.


First quarter moon1

First Quarter Moon


Third last quarter moon

Third (Last) Quarter Moon

Sometimes called Third Quarter.  The left half of the Moon appears lighted, and the right side of the Moon appears dark.  During the time between the Full Moon and the Last Quarter Moon, the part of the Moon that appears lighted gets smaller and smaller every day. It will continue to shrink until the New Moon, when the cycle starts all over again.


Third quarter moon

Third Quarter Moon


Full moon

Full Moon

The lighted side of the Moon faces the Earth.  This means that the Earth, Sun, and Moon are nearly in a straight line, with the Earth in the middle.  The Moon that we see is very bright from the sunlight reflecting off it.


Full moon1

Full Moon


Waxing crescent moon

Waxing Crescent Moon

This Moon can be seen after the New Moon, but before the First Quarter Moon.  The crescent will grow larger and larger every day, until the Moon looks like the First Quarter Moon.

("Waxing" means increasing, or growing larger.)

http://btc.montana.edu/ceres/html/birthdayphases.html


Waxing crescent moon1

Waxing Crescent Moon

http://btc.montana.edu/ceres/html/birthdayphases.html


Waxing gibbous moon

Waxing Gibbous Moon

This Moon can be seen after the First Quarter Moon, but before the Full Moon.  The amount of the Moon that we can see will grow larger and larger every day.  ("Waxing" means increasing, or growing larger.)

http://btc.montana.edu/ceres/html/birthdayphases.html


Waxing gibbous moon1

Waxing Gibbous Moon

http://btc.montana.edu/ceres/html/birthdayphases.html


Waning gibbous moon

Waning Gibbous Moon

This Moon can be seen after the Full Moon, but before the Last Quarter Moon.  The amount of the Moon that we can see will grow smaller and smaller every day. ("Waning" means decreasing, or growing smaller.)

http://btc.montana.edu/ceres/html/birthdayphases.html


Waning gibbous moon1

Waning Gibbous Moon

http://btc.montana.edu/ceres/html/birthdayphases.html


Waning crescent moon

Waning Crescent Moon

This Moon can be seen after the Last Quarter Moon and before the New Moon.  The crescent will grow smaller and smaller every day, until the Moon looks like the New Moon.

("Waning" means decreasing, or growing smaller.)

http://btc.montana.edu/ceres/html/birthdayphases.html


Waning crescent moon1

Waning Crescent Moon

http://btc.montana.edu/ceres/html/birthdayphases.html


The moon

http://www.opencourse.info/astronomy/introduction/04.motion_moon/moon_phases.gif


The moon

Earth

Plane of earth’s orbit

Moon

Plane of lunar orbit

Moon


Lunar eclipses

Lunar Eclipses

  • Moon moves into Earth’s shadow – this shadow darkens the Moon

    • Umbra

    • Penumbra

  • About 2-3 per year

  • Last up to 4 hours


Solar eclipses

Solar Eclipses

  • Moon moves between Earth and Sun

  • Moon casts a shadow on part of the Earth

  • Total eclipses rare – only once every 360 years from one location!


The tides

The Tides

  • Tides caused by pull of Moon’s gravity on Earth

  • High tide –

    • Side facing Moon and side away from Moon

    • Every 12 hours, 25 ½ minutes

  • Low tide –

    • On sides of Earth


Exploring the moon

Exploring the Moon

  • 1950s to 1960s - probes

  • Neil Armstrong First man on the Moon – July 20, 1969

  • Six Apollo missions (1969-1972)

    • 382 kg (842 lbs) rocks

  • 12 Americans have walked on the moon


The moon

When will we return?


Moon base of the future

Moon base of the future?

  • What would you need to live there?


The moon

The Lunar Challenge!


The moon

Name this phase!

Full Moon

What time does this phase rise and set?


The moon

Name these features.

Craters

Maria

Name these features.


The moon

Does this image show us the near side or far side of the moon?

Far Side

How can you tell?


The moon

Is this line the limb or terminator?

Limb

Terminator

Is this line the limb or terminator?


The moon

Name this phase!

First Quarter


The moon

Name this phase!

Waxing Crescent


The moon

Does this image show the near side or the far side of the moon?

Near Side


The moon

Name this phase!

Waning Gibbous


The moon

Name this phase!

Third Quarter


The moon

From what direction does the moon rise?

The East


The moon

Name this phase!

Waxing Gibbous


The moon

Name this phase!

Waning Crescent


The moon

What might be happening in this image?

Lunar Eclipse


The moon

Is this line the limb or the terminator?

Limb


The moon

Name this phase!

Look closely!

Waxing Gibbous


The moon

True or False:

The Far Side and the Dark Side of the moon are the same thing.

False!


The moon

Name this phase!

Full Moon


The moon

Name this phase!

New Moon


The moon

Does the moon rise or set in the west?

It sets in the west.


The moon

Name this phase!

Waning Gibbous


The moon

Name this phase!

Waning Crescent


The moon

Name this phase!

Waning Gibbous


The moon

The Mythical Moon


The moon

The Lunatic: Leesa Hubbard


Photo resources

Photo resources

  • http://www.nasm.si.edu/apollo/AS15/a15images.htm

  • http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-moon.html#apollo

  • http://clementine.cnes.fr/index.en.html

  • http://cass.jsc.nasa.gov/pub/research/clemen/clemen.html

  • http://spaceflightnow.com/news/n0108/15mooncreate/

  • http://seds.lpl.arizona.edu/nineplanets/nineplanets/pxmoon.html


More photo resources

More photo resources

  • http://www.nrl.navy.mil/clementine/clemovies/clemovies_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/eclipses/article_99_1.asp

  • http://lunar.arc.nasa.gov/results/ice/eureka.htm

  • http://www.space.com/scienceastronomy/solarsystem/moon_nss_020604.html


The moon

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