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Active
Astronomy: Classroom Activities for Learning About Infrared Light
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Instructions for Downloading:
Active Astronomy files are in PDF format and require Acrobat
Reader Plug-in (free). Activity sheets,
student tests and answer sheets are also available in Microsoft Word™
to allow you to modify these materials to best suit your students. |
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Materials: Active
Astronomy requires common classroom materials as well as specific electronic
components and color filters (gels). For details, see the "Suggested
Vendor List" available in Section 1 of Active Astronomy or as
a separate PDF file. |
Suggested
Vendor List |
Errata List : If
you have the Active Astronomy Classroom Activities CD-ROM, you should download
the Errata pdf file. Some of the URL links in the CD-ROM documents have
changed since the CD-ROM was created. This Errata List gives the correct
links for the documents on the disk. |
76K Errata
List |
Link to information about the University of Chicago Yerkes Observatory's implementation and modification of the Active Astronomy kits targeted especially for students with visual or auditory impairments:
astro.uchicago.edu/yerkes/outreach/activities/Explorations/sofia/SOFIA-kit_files/frame.htm
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Download Complete File of Active Astronomy:
Three files make up the complete set of materials for
Active Astronomy. |
1. |
Sections
1-5 Activity sheets, tests, and answer sheets 2.7MB
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2. |
Image
file for Section 2 592K |
3. |
Image
file for Section 5 876K |
If you have
a slow connection or printer, you may wish to download each section separately
(below). |
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Download individual
sections of Active Astronomy: |
Section 1 |
Overview
and Assessment 572K
This section contains an overview of the activities, including materials
and preparation, relevant portions of the National Science Education
Standards and AAAS's Benchmarks for Science Literacy, common student
misconceptions, the student test, and the role of infrared light in
astronomy. The PDF file contains parts 1.1 through 1.5.
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1.2 |
Modifiable Word Documents:
Learning About Infrared Light Student
Test 32K |
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1.3 |
Learning About Infrared
Light Student Answer Sheet 32K |
1.4 |
Learning About Infrared
Light Teacher Answer Key 32K
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Section 2 |
What's
Getting Through? 300K
Students are introduced to light and colored gels (filters). Students
make and test predictions about light and color using gels, by looking
at messages written with differently colored crayons on differently colored
paper with differently colored gels. Students then learn about the importance
of gels (filters) to astronomers by looking at an astronomical image through
red and blue gels and comparing the parts of the image that are enhanced
by the gels. Then, they analyze images taken with regular and infrared
cameras to see that objects opaque to light at one wavelength may be transparent
to light of a different wavelength.The PDF file contains parts 2.1 through
2.3.
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2.2 |
Modifiable Word Documents:
Student Activity Sheet 92K |
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2.3
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Teacher Answer Key
156K
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2-Images |
Images:
Images to support activities in Section 2 592K
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Section 3 |
Sensing
the Invisible 632K
Just as our ears cannot hear all wavelengths of sound, our eyes cannot
see all wavelengths of light. Students build a photocell detector, and
use it to detect different colors of light in a spectrum. Then they place
the detector just outside the red region of the spectrum and see that
the detector detects the presence of light there, even though there is
no color visible. Students learn that "invisible light" exists and that
we can detect this light with instruments other than our eyes. In a final
part of the activity, students investigate the IR signals emitted by TV
and VCR remote controls. The PDF file contains parts 3.1 through 3.3. |
3.2 |
Modifiable Word Documents:
Student Activity Sheet 632K |
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3.3 |
Teacher Answer Key
632K
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Section 4 |
Reflection
248K
Students learn that infrared light is reflected in the same manner as
visible light. Students align a series of mirrors so that they can turn
on a TV with a remote control when the remote is not in a direct line
with the TV. As a result of their experiment with reflection, students
deduce that infrared light is another form of light and is a part of the
electromagnetic spectrum. The PDF file contains parts 4.1 through 4.3. |
4.2 |
Modifiable Word Documents:
Student Activity Sheet 36K
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4.3 |
Teacher Answer Key
36K |
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Section 5 |
Listening
to Light 608K
Students learn that light carries information and that infrared (IR)
radiation is a form of light that in some cases behaves like visible light
and other cases behaves very differently. Students first see how a photocell
(solar cell) can be used to detect the presence of light. They then learn
how the photocell reacts to light from a laser pointer (or other laser)
and a remote control, and see that information, for example a message,
can be transmitted by visible and infrared light. They listen as an infrared-emitting
diode is used to transmit music from an audio source (like a CD player)
to the photocell with a speaker connected to it. Finally, students test
the effects on the transmission of music when various objects are placed
in between the infrared emitting diode and the photocell. They learn that
some objects that block visible light allow infrared light to pass through.
The PDF file contains parts 5.1 through 5.3.
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5.2
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Modifiable Word Documents:
Student Activity Sheet 40K
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5.3 |
Teacher
Answer Key 44K |
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5-Images |
Images:
Images to support activities in Section 5 876K |
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(Aug 25, 2003)
5.4 |
Supplementary
Information - for teachers and students interested in delving more
deeply into electronics, here is supplementary information about electrical
components in the Infrared transmitter circuit:
- Reference material about capacitors, the crucial component in this
circuit 303K
- The IR transmitter circuit re-drawn with text explanation by Yerkes
Observatory (U. Chicago) electrical engineer Jesse Wirth
41K
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Related Laboratory
Experiment: |
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Perform a version of the experiment
of 1800, in which a form of radiation other than visible light was discovered
by the famous astronomer Sir Frederick William Herschel. The experiment
appears on the Spitzer website; it involves
using a prism and thermometers to detect infrared light in the same manner
as Herschel. Go
to the Spitzer website for details |
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