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The Phases of the Moon

The Phases of the Moon

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Author: Shannon Finn
Description:

Third Grade Science Content Standard for California Public Schools

Earth Science:

4. Objects in the sky move in regular and predictable patterns. As a basis for understanding this concept:  

b.Students know the way in which the Moon’s appearance changes during the fourweek lunar cycle. 


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Tutorial

There are different phases of the moon?

Yes, there are different phases based on the way the light from the Sun illuminates the moon. The amount of light that hits the moon depends on the moon's location around the Earth during each monthly orbit. 

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

How long does a lunar cycle last?

The complete phases of the cycle lasts 29.5 days on average rotation. Because the length of the lunar cycle is shorter than the length of a month, sometimes there are two full moons in a month.  The second full moon in a month is generally called a "Blue Moon," however, this doesn't happen very often.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

New Moon

You are looking at the side of the moon that is unilluminated by the sun.  The Earth is blocking the sunlight from hitting the moon.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Waxing Cresent

The moon is now about a quarter illuminated. The light is slowly spreading onto the moon.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

First Quarter

There is at least half of the moon illuminated by the Sun.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Waxing Gibbous

A little over half of the moon is illuminated by the sun, but still not fully illuminated.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Full Moon

This is when the entire disk of the moon is completely illuminated.  This is done by the direct sunlight.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Waning Gibbous

The moon is now losing the direct sunlight, causing a fraction of the moon to become unilluminated.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Last Quarter

About half of the moon is losing light, causing one half of the moon to be unilluminated.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Waning Crescent

The moon is less than one-half illuminated by the sunlight.  After this stage, the phases of the moon restart and a New Moon is seen.

Source: Cidadao, A. (2014, March 27). Phases of the Moon and Percent of the Moon Illuminated. Retrieved July 26, 2017, from http://aa.usno.navy.mil/faq/docs/moon_phases.php

Click to view a fun video on the phases of the moon!

Source: M. (2014, September 03). Learning About The Moon and Its Phases. Retrieved July 26, 2017, from https://www.youtube.com/watch?v=UhhSmpFtg7k

Wanna know more? Click on the following websites to gain more information!

For the current lunar phase: https://www.timeanddate.com/moon/phases/

General Lunar Phase information: https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question3.html

A helpful website to help you remember the different phases of the lunar cycle:  http://earthsky.org/moon-phases/understandingmoonphases

Big Question...

Why is knowing the phases of the moon so important?  What is so beneficial about understanding the phases of the moon?

Go here and give me your answer!

https://docs.google.com/forms/d/e/1FAIpQLScivwKff-AuvNEJkJqhBW9yXYUynA43MnAC5QMJefuaFt_Yww/viewform?usp=sf_link

Big question...

Why is knowing the phases of the moon so important?  What is so beneficial about understanding the phases of the moon?


Go here to input your answer!

https://docs.google.com/forms/d/e/1FAIpQLScivwKff-AuvNEJkJqhBW9yXYUynA43MnAC5QMJefuaFt_Yww/viewform?usp=pp_url&entry.1418142336&entry.620901881