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Chris L Peterson wrote:
There was some discussion here a few months ago about the Boy Scout Astronomy Merit Badge requirements. As it happens, I'm helping my niece with her Girl Scout requirements, which make the Boy Scout requirements look like graduate school in comparison. The errors are horrid. On the bright side, which age group is this badge for? I've also helped with the Cub Scout astronomy achievements. They're extremely basic, but pitched for 7-10 year old boys. The Boy Scouts get into their merit badges at age 12 or older. -- Glenn Holliday |
#12
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Chris L Peterson wrote in
: On Thu, 28 Jul 2005 21:18:01 +0000 (UTC), (Brian Tung) wrote: Assuming a scale height of 8 km (5 mi), it's about a third of a millibar. Less than what you get on Mars. About 0.1 mb at 64 km (40 miles). But that probably feels like a pretty stiff wind at 15,000 mph! Does the effect scale up and down evenly? ie: does a 15,000 mph wind at 0.1 mb feel just like a 1.5 mph wind at 1000 mb???? |
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GD wrote:
Chris L Peterson wrote in : On Thu, 28 Jul 2005 21:18:01 +0000 (UTC), (Brian Tung) wrote: Assuming a scale height of 8 km (5 mi), it's about a third of a millibar. Less than what you get on Mars. About 0.1 mb at 64 km (40 miles). But that probably feels like a pretty stiff wind at 15,000 mph! Does the effect scale up and down evenly? ie: does a 15,000 mph wind at 0.1 mb feel just like a 1.5 mph wind at 1000 mb???? The momentum carried in the wind would be the same, but they would feel very different. The energy delivered would be 100,000,000x more. Frictional drag scales as the square of vehicle velocity. And worse at these sorts of speeds and densities you generate a hot shockwave with all sorts of horrible non-linear effects as well. Regards, Martin Brown |
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Marty" wrote in
message news:18504-42E84C67-55@storefull-333 7.bay.webtv.net... That is depressing. You'd think they could do MUCH better than that. And then later, the magazines aimed at these girls will be chock full of astrology, numerology, psychics, etc. And people wonder why females are under represented in the scientifically oriented professions... =A0=A0=A0=A0=A0=A0=A0=A0.. doesn't explain why they're pouring into law and medicine =A0 or why more females attend college then males in the U.S. -- Hilton Evans I'm definitely not implying that females are in any way intellectually inferior to men, and I don't claim to know if any differences in interests and aptitudes are caused by nature or nurture. It's undeniable that for whatever reasons, females and males tend to gravitate toward different areas of study. (Thank God I'm not the president of Harvard... this is verboten discussion...) ANYWAY, I'm surprised, and almost offended, that the feminist organizations haven't raised more hell about what girls are exposed to in their popular magazines. Maybe oppression by all males is just an easier, more satisfying target. Marty |
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Chris L Peterson wrote:
There was some discussion here a few months ago about the Boy Scout Astronomy Merit Badge requirements. As it happens, I'm helping my niece with her Girl Scout requirements, which make the Boy Scout requirements look like graduate school in comparison. Here are some activities for the boy scout merit badge requirement (ages 11-17), which is publically available on the net at - http://www.usscouts.org/mb/mb022.html For boys 11-17: ===================== 3. With the aid of diagrams (or real telescopes if available), do each of the following: a. Explain why binoculars and telescopes are important astronomical tools. Demonstrate or explain how these tools are used. b. Describe the similarities and differences of several types of astronomical telescopes. c. Explain the purposes of at least three instruments used with astronomical telescopes. .. . . . 5. Do the following: a. list the names of the five most visible planets. Explain which ones can appear in phases similar to lunar phases and which ones cannot, and explain why. b. Find out when each of the five most visible planets that you identified in requirement 5a will be observable in the evening sky during the next 12 months, then compile this information in the form of a chart or table. Update your chart monthly to show whether each planet will be visible during the early morning or in the evening sky. ===================== The analogous merit badge at the girl scouts is for a different age group - the Junior Girl Scouts ages 8-11 and is titled "Sky Search". Compare - http://www.girlscouts.org/program/gs...ist/junior.asp with http://www.girlscouts.org/program/gs...list/11_17.asp The requirements for the junior girl scout merit badge apparently are unavailable on the web. It appears the GSA wants you to buy the Junior GSA Handbook to find out. From one outstanding web based program at the Alder Planetarium of Chicago, Ill., one can infer that the requirements are similar - http://hou.lbl.gov/~vhoette/GirlScouts/actaquay.html http://hou.lbl.gov/~vhoette/GirlScouts/ For girls 8-11: ===================== 6. Learn about the differences in the brightness of stars. a. Distinguish stars by their brightness. b. Model the magnitude system used by astronomers to classify star brightness. c. Compare the brightness of stars with auto aperture, an image analysis tool. d. Find stars and their brightness counts by using an image analysis tool called 'FIND'. In one requirement, Activity #6, the Junior GSA program appears to exceed the Eagle Scout merit badge program - girls study star colors and observe stars through different colored filters. http://hou.lbl.gov/~vhoette/GirlScou...l#Star%20Color http://hou.lbl.gov/~vhoette/GirlScouts/StarColor/ 6. Learn about the differences in the color of stars. a. Notice the color of stars in photographs. b. Experiment with filters to see how they block colors or let colors pass through. The Alder program even has an imaging processing program to process FITS images. http://sunra.lbl.gov/~vhoette/ToolBox/ The Girl Scout program for age 11-17 does not have an analogous "Sky Search" merit badge. The activity for that age group is called "Space Exploration" - which focuses in part on science career exploration. I was unable to find any trustworthy lists of the activities for that age bracket. For either Boy Eagle Scouts or Girl Scouts, the Hands-On-Universe site at the Alder Planetarium looks like a good activity resource. http://hou.lbl.gov/~vhoette/Explorations/ I am not involved with either boy or girl scouting. Should I be speaking out of ignorance of both fine programs, any corrections or clarifications would be appreciated. Chris, hope the Alder site helps with your niece. - Canopus56 P.S. - At the bottom of this page of requirements are three images- one of which is horribly wrong: http://www.cloudbait.com/misc/gscoutastro.jpg You mean the terminator rising south to north instead of east to west? LOL! |
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On 31 Jul 2005 18:33:59 -0700, "canopus56" wrote:
The analogous merit badge at the girl scouts is for a different age group - the Junior Girl Scouts ages 8-11 and is titled "Sky Search". Yes, the requirements I gave are for the Junior Girl Scouts Sky Search Badge, from the current printing of the Junior Girl Scout Badge Book. From one outstanding web based program at the Alder Planetarium of Chicago, Ill., one can infer that the requirements are similar - http://hou.lbl.gov/~vhoette/GirlScouts/actaquay.html http://hou.lbl.gov/~vhoette/GirlScouts/ Thanks. They will be doing an overnight at my observatory next week. We will deal with the basic requirements, but will go considerably beyond them. At the bottom of this page of requirements are three images- one of which is horribly wrong: http://www.cloudbait.com/misc/gscoutastro.jpg You mean the terminator rising south to north instead of east to west? LOL! No, I mean that the image doesn't show moon phases at all, but a lunar eclipse. I call that a glaring mistake- you can't possibly get phases that look like what the picture shows. _________________________________________________ Chris L Peterson Cloudbait Observatory http://www.cloudbait.com |
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