Today's Report Includes:
- This
Week's: Data, Questions
and Journal
- Predict:
What Will Your Graph Look Like?
- The
Longitude Clues:
Coming
Next
Week!
- Journaling:
How Sunlight Strikes the Earth
- Links:
This Week's Mystery Class Resources
 |
|
 |
| Sunrise/Sunset Data for Monday, Mar 3 | New
each week! This Week's Questions (Handout) |
Mystery Class Journal (Journal page) |
| After
six weeks of data can you tell where the photoperiod graph lines
are heading? |
|
In
today's Handout above, predict the way your graph will look at the
end of March. |
Expecting the Longitude Clues in today's report? Well, have no fear, they are near and will be in next week's report, March 14th.
For now, as you plot the changes on your graph, think about how the Sun's light is also changing the way it strikes the Earth.
Explore this
in your journal after studying the photos below. This will help you to
better understand how to use the Longitude Clues to estimate each site's
longitude.
Draw an imaginary longitude line in both photos running from the North to the South Pole right down the middle of the United States (about 95 degrees west).
Look at the December photo and describe when sunrise occurs along the line (e.g. pick two places north of, and two south of the equator). Is sunrise occurring at the same time at all these locations along the line, or at different times?
Then look at the March photo and describe when sunrise occurs at the same locations along the line. Is there a difference between the two dates? Why?
December
21
March
20
| There's
still time to conduct
this eggceptional experiment. |
|
Are There Special Powers on the Equinox? >> |
Seasonal Cycles:
- Viewing the Earth from Space: The 12-Month Cycle Viewed from Space >>
Materials and More:
- Quick links to weekly updates, data, tips and resources >>
Mystery Class Deadlines:
- Know What to Expect and When -- Mark your Calendars >>
The Next Mystery Classs Update Will Be Posted on March 14, 2008.
© 1997 – 2024 Journey North. All rights reserved.
