Physical Science 15 Online - Chabot College - Scott Hildreth
HW#3: Observation: The Initial Step of Science - Full Moon Madness?
Soon as the evening shades prevail,
The moon takes up the wondrous tale,
And nightly to the listening earth
Repeats the story of her birth.
- Joseph Addison
50 points total - 30 for your post, 20 for your replies/questions.
| One of the first observations we can make of nature - and
one that certainly demonstrates a process of scientific inquiry, is
about the phases of the Moon. Every "moonth" we see a similar
sequence of moon shapes, visible to (almost!) everyone on Earth.
(You might wonder what locations on Earth might not be able to see
the moon regardless of weather, and why? A great thing to research
and explore!) Many cultures around the world believed the Sun and
Moon as "self-luminous" beings or gods, able to influence us from
far away with their power and light. And to this day, there is
belief that the full moon influences human behavior. In this homework you'll explore this question, and more.
1. (Opinion & Analysis) Do Full Moons really affect people on Earth? For the second part of your assignment, please share your opinion on the question about whether full moons affect people on Earth. Then read:
What do you think after reading both sources? Which author do you think is being "scientific", and why? How can you evaluate whether that article is indeed "scientific"? What qualities do you think make an article scientific? Aim for another 1-2 paragraphs here (about 250 words). Please be sure to include your bibliographic citation for both articles and any others you consult answering this quesiton.
2. (Investigation) What does the Moon look like in Timbuktu when it is full in Hayward? Most people who have not taken a science course mistakenly believe that the moon appears in a different phase at different places on Earth (on the same day) - for example, that when the moon is full in the San Francisco Bay Area, it might be in the first quarter phase in Hawaii, or maybe a crescent over Japan. This isn't true - the Earth rotates once a day, while it takes the moon almost 30 days to repeat its cycle of phases, so in just one rotation of our planet, everyone will have a chance to see the moon in the same general shape. This moon this week should be a lovely waxing crescent phase, visible in the west after sunset. Contact a friend or family member this week who lives somewhere else in the US, or even better, the world! (Please choose someone who lives far away - at least 500 miles. Los Angeles is OK, but San Jose is not!) Ask them to go outside and view the moon, and to tell you what the moon looks like. In particular, ask them what (local) time it is when they viewed the moon, and whjch side (left or right) is lit, and which is dark. Note that the moon this week will be visible before and after sunset, but set well before midnight, and it should be visible everywhere (weather permitting). IF you don't know anyone who lives far away, you have a bit more work to do - use the web to find a lunar phase table or newspaper for this week in a city outside of the US, or go to the library and find a paper from another city or country and search for the local moon phase on that day. Compare what people there should see, and when, to what we can see. Record in your response who you talked with, where they were, and what they saw.
Did they see the same shaped moon as you? Could you see the moon at the
same moment? Where they surprised when you shared that the moon was the
SAME shape for you? How did YOU explain why the Moon is the same phase no
mater where you are on Earth? (And if you don't understand why this is,
think carefully about how long it takes the moon to change its phases and how
long it takes the Earth to spin!) Aim for a paragraph on this question.
3. Extra Credit For extra credit, please locate another article on the subject of the full moon and human behavior, and evaluate it as to its scientific credibility as best you can. Be sure to include all proper citation information, including author, date, title, publishing institution, and URL if found online. Look at Chabot College's website on citing online resources, available at: http://www.chabotcollege.edu/Library/onlineref/Citing_Online_Resources.htm Additional Extra Credit Activity: Research the
Solar and Lunar Eclipses that will occur this year. Consider using the excellent
website by Fred Espanak, at
http://sunearth.gsfc.nasa.gov/eclipse/OH/OH2008.html.
Note specifically:
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