Unit+3+Materials

__//**Shrinking the SS!**//__


Here's the handout we completed (on the football field) with the scaled diameters and distances included. Look at the first question (with a direct inches to miles conversion, which a couple of you asked about - this skips the inches-feet-miles fence posting step that we did in class for point of illustration) and how to arrive at this number of approx. 65 billion, which is the factor by which we shrunk the sun. In other words, if we had ~65 billion golf balls, we'd have the approximate size of the sun!

//__**Earth-Sun-Moon Interactions; Planetary Motions**__//
Here are the first two sets of Power Point slides for Unit 3:


 * 1) Planetary Motions.ppt
 * 2) Sun Moon Interactions.ppt

And here's the ppt on our review of the solar system:



Check out these online resources to learn more about our solar system and the motion of the moon:

Phases of the Moon

Why does only one side of the moon face Earth?

And here's info. on the progress of the Voyagers!

Where are the Voyagers?

You can access the Shrink the SS handout here: Shrink the SS handout

//__**Seasons Lab**__//
Here's a good resource to check out online for seasons info:

NOAA Seasons Online Resource

And here are two interactive sites that will help you visualize the Earth's position during each of the seasons:

Earth-Sun Relationships

McGraw-Hill Interactive

Seasons lab and diagram (for Part 2):



=__//TIDES//__=

//Creating a Tide Curve! Due FRIDAY 12/6.//

Read through the instructions on handout #1 of 2 provided in class (the double-sided sheet with the graph on one side). Each of you has been assigned a number in class that corresponds to a week of tidal data that starts on a Sunday and ends on a Saturday as indicated on handout #2 of 2 - you can access this handout here if you've misplaced it:



The website that you need to get tidal data for Boston, MA is here (do NOT use the link provided in the the tide instructions above):

Water Level Data for Boston, MA

> Moon phase data
 * Enter your date range in the "Options" (on the left-hand side of the page). Click the "H/L" button to search for the High/Low tides for your date range. Click the blue "Data Only" button. You do not need to change anything else.
 * You now have the data for your week: on your graphs, plot the high and low tides for each day using the **Verified Data** provided in the data listing. You should see 2 high tides and 2 low tides per day occurring at approximately 6-hour intervals. Remember that 0:00 is 12 midnight; 06:00 is 6 a.m.; 12:00 is 12 noon; 18:00 is 6 p.m., & so on......
 * When you've plotted all of your points, connect all of the high tide points and all of the low tide points, and color in the area above/below each of these curves. Use any color you choose!
 * Next, use this site to determine the moon phase for your week, and fill in the phase of the moon at the top of your chart:
 * NOTE THAT ON YOUR GRAPH THE DOUBLE LINE TOWARDS THE BOTTOM OF THE PAGE MARKS THE POINT AT WHICH THE NUMBERS GO FROM POSITIVE TO NEGATIVE (in other words, all of the numbers, or 1 through 11, starting at the double line near the bottom of the page are positive).
 * We'll be connecting all of the grids together when we meet again on Friday to create a tide curve!

Tides Lecture Material: