By Libby and Robert Strong and Richard Pollack
Now that the school year has been in full swing for about a month and the days are growing shorter, we are more likely to see a sunset before bedtime. Have you ever wondered why the setting sun looks orange or red? For that matter, have you ever wondered why the clear sky looks blue and the Sun high in the sky looks yellow?
Safety Warning: never look directly at the Sun. Viewing
the Sun can result in serious and permanent damage to the eyes.
Using any filters, binoculars, or even telescopes with filters
can cause permanent eye damage. Consult an astronomy expert
before doing any daytime solar observing.
Sky Colors
To make an experimental “sunset” model, you will need the following:
A: Permission from your parents – There is water involved, water is heavy, and you need someone big and strong to carry the water for you and be a part of the fun and discovery of learning something new.
B: An unused aquarium (no fish - just water) 10 gallons (about 38 liters) or less in size.
C: A working flashlight with fresh cells (some people call these batteries, but a battery is really two or more cells).
D: Access to powdered milk or creamer. You will need just a few pinches.
F: Access to water, and a way to carry the water to fill the aquarium.
G: A room that can be darkened.
Procedure:
Step 1: Place the aquarium in the room you wish to do the experiment in and fill about 2/3 full (6 or 7 gallons or about 25 liters) with tap water.
Step 2: Darken the room and shine the flashlight from one
side of the aquarium to the other. Look at the color of the
beam from the side and the color of the flashlight beam projecting on a
white surface or wall. Talk about the color you see.
Let everyone see the color.
Step 3: Sprinkle a single small pinch of powdered milk or creamer into the water; gently stir the water with you hand. Repeat the flashlight observation and color discussion. After everyone has seen and discussed what color is observed, add another small pinch and repeat the experiment. When the light from the flashlight dims greatly stop adding the powdered milk or creamer.
PHOTO (Aquarium flashlight 1 from the side)
In this modeling experiment of a sunset what do you think happened to
the brightness and color of the flashlight light?
In the real world, what do you think the water, powdered milk
or creamer, and the flashlight represents?
If you added too many pinches, you can always take out a few
gallons of your water and replace them with clear water.
PHOTO (Aquarium flashlight 2 and or 3 projected on the wall)
To learn more about colors of light, sunsets, the blue sky, the color of the Sun, and safety tips for safe solar viewing, visit our website at http://smartcenter.org/ovpm/lightandcolor
Tenth Planet? Name the Tenth Planet Contest
On July 29, 2005 the announcement came that an object was discovered
beyond and slightly larger than Pluto. If confirmed, this may
be our tenth planet!!! This object has an official astronomical
name of 2003 UB 313. The staff of the WLSC SMART-Center thinks
2003 UB 313 is a lousy name for our new planet. What do you
think the tenth planet should be called? Send your name idea
for the tenth planet to: e-mail:
strongro@wlsc.edu
Or mail the information to:
Name the Tenth Planet
WLSC SMART-Center
1610 Warwood Avenue
Wheeling , WV 26003
We will post our 10 favorites on our web site.
The staff of the WLSC SMART-Center will come to your school
to present a free science program if your name idea is selected as our
top favorite. Dead line is December 15, 2005.
All you need to send is:
Your First Name and Last Initial:
Grade Level: (K-12)
Teacher Name
School
County
State
Name for Tenth Planet
100 words or less why you chose this name
What’s Up? Magnificent Mars
Speaking of planets, during the month of October, 2005, the planet Mars
will conclude it’s closest approach to the Earth since
August 27, 2003.
Throughout October, Mars will appear brighter (to the eye) and
larger (in a telescope) than usual. This is the best Mars view
for the next 13 years!! On the evenings of October 28 and 29
(the evening of closest approach), 2005 the members of the local astronomy
club ASTROLABE, the Near Earth Object Foundation, and staff of the WLSC
SMART-Center will bring their telescopes to the Cardinal Shelter at Brooke
Hills Park for a MarsWatch event – FREE to the public. While
we gaze at the planet Mars through telescopes, the original 1952 movie
version of The War of the Worlds will be playing. Program starts
at
7:00 p.m.. For more information on the MarsWatch and other
upcoming free astronomy events at Brooke Hills Park , visit our website:
(http://smartcenter.org/whatsup)
PHOTO (NASA Mars image HST August 2003)
Mars Astronomy Project
An excellent fall / winter Mars astronomy project is easy. Find Mars in the Eastern Sky (check our website for details) and sketch on paper the stars around Mars. Place a mark where Mars is when you start. Once every few days to a week locate Mars on your chart and mark its location and the date and time of the observation. Continue this project during October, November, and December 2005, and into January 2006. You will (if careful) observe a remarkable astronomical phenomenon.
Libby and Robert Strong work at the West Liberty State College SMART-Center.
Libby is the director of the West Virginia Handle On Science Program that
brings hands-on science kits into the classrooms of K-6 grade public schools
in the five counties of West Virginia ’s Northern Panhandle.
Robert is the Director of the WLSC SMART-Center, the hands-on science center
of northern West Virginia .
Richard serves as the Assistant Program Coordinator at the SMART-Center.
Libby, Robert, and Richard invite you to visit the SMART-Center website
at www.smartcenter.org