Moon phases
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Moon Phases. -The sun always touches half of the moon. -The Moon revolves around the Earth. -During each revolution we see different portions of the lighted half of the moon. http://www.nasm.si.edu/apollo30th/moontheater/phasepage2.html.

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Moon Phases

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Moon phases

Moon Phases


Moon phases

-The sun always touches half of the moon. -The Moon revolves around the Earth. -During each revolution we see different portions of the lighted half of the moon.

http://www.nasm.si.edu/apollo30th/moontheater/phasepage2.html


Moon phases

The revolution of the Moon around the Earth makes the Moon seem like it is changing shape in the sky. 

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


Moon phases

-Humans see the moon at different angles every night. 

-At each different angle we see more or less of the lighted half of the moon.

-These are called "phases" of the Moon. 


Moon phases

http://www.niehs.nih.gov/kids/lunar/why_phases.gif


Moon phases

-One revolution of the moon around the Earth lasts 29,5 days.

-The Moon passes through four major shapes during one cycle.

-The phases are always in the same order:

  • New moon

    1ª)

    2) First quarter

    2a)

    3) Full moon

    3a)

    4) Third quarter

    4a)


New moon

New Moon

-The Sun, Earth, and Moon are almost in a straight line. The Moon is between the Sun and the Earth.

-The lighted side of the Moon faces the sun, not the Earth. 

-We see the part of the moon that is NOT lighted, so we see almost no moon.


New moon1

New Moon


First quarter moon

First Quarter Moon

-The right half of the Moon appears lighted. The left side of the Moon appears dark. 

-The lighted part of the moon gets bigger and bigger every day from the New Moon to the First Quarter Moon. It will continue to grow until the Full Moon.


First quarter moon1

First Quarter Moon


Full moon

Full Moon

-The Earth, Sun, and Moon are almost in a straight line. The Earth is in the middle. 

-All of the lighted side of the Moon is facing the Earth. 

-The Moon that we see is very bright from the reflection of the sun.


Full moon1

Full Moon


Third quarter moon

Third Quarter Moon

 -The left half of the Moon appears lighted, and the right side of the Moon appears dark. 

-The lighted part of the moon gets smaller and smaller every day from the Full Moon to the Third Quarter Moon. It will continue to get smaller until the New Moon.


Third quarter moon1

Third Quarter Moon


There are also four other phases of the moon sometimes used

There are also four other phases of the Moon sometimes used.


Crescent moon

Crescent Moon

This moon is smaller than a quarter.

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


Crescent moon1

Crescent Moon

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


Gibbous moon

Gibbous Moon

This Moon is bigger than a quarter moon.

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


Gibbous moon1

Gibbous Moon

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


Moon phases1

Moon phases


Moon phases

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


Waxing waning

Waxing & Waning

http://www.nasm.si.edu/apollo30th/moontheater/phasepage4.html


Moon phases

http://www.nasm.si.edu/apollo30th/moontheater/phasepage4.html


Moon phases

http://www.calvin.edu/~lmolnar/moon/images/phases.gif


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