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Exploring
Spectral Basics and Color Mixing
A
WebQuest for 11th and 12th Grade Physics
Designed
by
Wendy
Droke
e-mail
me
Introduction
| Task | Process | Evaluation
| Conclusion | Credits
Introduction
You have
been given the task of determining a stars origins and make up. To do this,
you must do research on light. We are unable to roll back in time to see
the birth of the star, and we can not simply send a probe to the star to
ask it questions, or find readings from the star itself, so you must utilize
the same methods modern astronomers use to determine information from the
star.
The
Task
Your task
is simple. For your given star or star cluster you must:
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Research the
location, age, makeup and any theories on its formation
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Figure out how
the scientists determined these things
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Create a 10-15
minute presentation to show the class about your star. You may use any
presentation method you so desire - powerpoint, a poster, or the whiteboard.
The
Process
To Complete
your project, you will work in a three person group. Each group member
will have a specific task in the research phase of yoru project. You must
have a history buff, a spectral scientist, and a color
export.
All participants
should start by spending time on the ExploraTour
about stars. At the top of the page is a forward button. Use it to get
to a topical index. Remember this site - you may find it useful on your
own specific tasks. As a matter of fact, you may find your specific star
there somewhere!!
Keep in mind
as you work that the resources provided are a great starting place, but
you are by no means limitted to the sites listed.
Specific
tasks for each participant:
HISTORY BUFF-
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Start by reviewing
the evolution of stars, looking at the birth and death of stars on the
stellar
life website
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Now that you
have an idea of the life cycle of a star, research your particular star
or cluster. You are looking for information specifically on what stage
of life your star is in and what, if anything, astronomers have discovered
about your stars origin. Check wikipedia,
see if they have any information. If they don't, consider adding information
if you find anything! Another reference to try is the Bright
Star Catalog. Make sure you understand how they came to the conclusions
they did!
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Find the exact
location of your star, and create a map of nearby stars. This may be as
simple as finding a good map online that you can print.
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Determine if
your star is part of a larger nebula. If it is, research surrounding stars.
Is your star young or old in the grand scheme of things?
SPECTRAL SCIENTIST-
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Start by reading
the information in the Quantum
Zone about what spectral lines are.
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Now, investigate
how scientists have used spectral lines over the years to determine the
makeup of a star at the Science
of Light.Make sure you are capable of explaining how you can look at
a spectral makeup of a star to determine what elements are present. For
a good explanation of the different classifications of spectral make up
go to the Regulus!
Papers
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Research at
the constellation
and star website to determine the spectral type of your given star
or cluster. Use what you learned before to figure out what this means approximately.
Make sure you know how the scientists before you determined these things.
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Consult with
the history buff. They should be determining the age of a star. See if
the makeup you have determined makes sense with the age of the star. Remember
that heavier elements cannot exist in a young star!
COLOR EXPERT-
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Start by investigating
the
tech site. Read up about color and light. Determine how mixtures can
determine the color that you see.
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Investigate
the Hertzsprung-Russell
Diagram, and how it has to do with stars. Make sure you can explain
how an astronomer would use it.
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Research into
the color make up of your star. One
fun resource uses internet color coding to give an approximate color
of a star. Where does it fit on an H-R diagram? Consult with the Spectral
Scientist and the history bugg to make sure your findings match up with
their's.
This brings
you through the first two tasks of your project. Finally, as a group work
to create a presentation. Each group member will present to the class their
part of the findings. Relate your discoveries to your specific star. Be
sure to include details on how astronomers researched your specific star
or cluster.
Include in
your presentation a bibliography, citing all resources you used to research
your star. Use rapid cite to create
your bibliography and use MLA formatting.
Practice
your part of the presentation for each other (possibly more than once!)
to make sure your presentation will flow smoothly, and will not repeat
itself in each section!
Evaluation
Describe
to the learners how their performance will be evaluated. Specify whether
there will be a common grade for group work vs. individual grades.
|
Beginning
2 |
Developing
4 |
Accomplished
6 |
Exemplary
8 |
Score |
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Students
contributed to presentation within their given role.
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One
student presented entire presentation.
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Two
students contributed to presentation.
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All
members contributed, but did not discuss specifically their part of project.
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All
members effectively related their specific material and worked together
to present all infromation.
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History
and formation of star accurate
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No
information on history or formation of stars.
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Some
infromation related to formation of stars, but not the specific star in
question.
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Detailed
infromation related to formation of stars, but not the specific star in
question.
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Accurate
information was given on the specific star, or stars similar to specific
star if information was not readily available.
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|
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Spectral
analysis infromation accurate
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No
information on spectral analysis of stars.
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Some
infromation related to spectral analysis of stars, but not the specific
star in question.
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Detailed
infromation related to spectral analysis of stars, but not the specific
star in question.
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Accurate
information was given on the specific star, or stars similar to specific
star if information was not readily available.
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Color
information accurate
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No
information on color of stars.
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Some
infromation related to color of stars, but not the specific star in question.
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Detailed
infromation related to color of stars, but not the specific star in question.
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Accurate
information was given on the specific star, or stars similar to specific
star if information was not readily available.
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Detailed
bibliography included
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No
bibliography - 0 points
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Bibliography
has more than 4 errors, and does not include all sources.
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Bibliography
present, with two or more errors in formatting.
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Thorough
detailed bibliography in appropriate formatting.
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Conclusion
From all
of this, you have seen how different pieces fit together to create the
make up of a star. You have seen the different things that an astronomer
must combine to research a new star or cluster, and seen how those puzzle
pieces fit together to see a project to completion.
An addtional
site you may have fun investigating is put out by NASA,
and has a way to view different areas of the sky. Have fun, and happy star
hunting!
Credits
& References
Most of the
information on this page comes from my college astronomy classes, so a
big thank you to Andrea Dobson for the patience she showed me in those
classes!
I found both
the background image and the prism picture at the top on free image websites.
Last
updated on December 31, 2005. Based
on a template from The
WebQuest Page
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