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Archive for the ‘Color and Light’ Category

CLASS ALERT *If there is extreme weather tomorrow I will e-mail or call you to let you know if we are cancelling class.*

Homework for Color and Light:

1.  Make a rainbow with a garden hose.  Choose a sunny day and stand with the sun at your back.  Late afternoon is usually a good time.  Use a garden hose with a fine spray setting or put your thumb over the end of the hose to make a fine spray.  Look for the rainbow.  If you are having trouble, make sure that the sun is behind you (coming over your shoulder).  Review the idea that white light (sunlight) is made up of all colors.  When the waves of sunlight hit the waterdroplets they bend, and we can see the different wavelengths as different colors.

2.  There are several experiments to do with the UV detecting bracelets we made.  First, have the kids demonstrate to their parents, friends, siblings, or anyone they can how effective sunblock is in preventing UV radiation from damaging your skin.  Use a stopwatch to show how quickly the beads change color in sunlight.  Then place the beads in a ziplock baggie and spray on some sunblock.  Watch how slowly (if at all) they change.  Next, be ready to report back in our next class about these two experiments:

a.  when is UV radiation the strongest?  Have the kids time how quickly their beads turn bright colors in the early morning, at noon, and in the evening.

b.  are some UV beads more sensitive than others?  That is, do some beads change color quickly and others need more time or more sunlight to become dark?  How could you use this information to tell you about how strong the UV radiation is today?

 Prep work for the next class (tomorrow 6/13):

Vocabulary

Mass

Buoyancy

Density

Displacement

Websites

Bill Nye the Science Guy on buoyancy.  This is a 20 minute video, but it has lots of great parts.  Try to watch as much as you can- you can take breaks or watch different parts on different days.

http://www.youtube.com/watch?v=-U1YVZMifMM

This is a very short and basic interactive website: http://www.bbc.co.uk/schools/digger/5_7entry/8continue.shtml

This is a bit more complicated explanation of buoyancy, but it introduces some good vocabulary: http://www.pbs.org/wgbh/nova/lasalle/buoybasics.html

TEXTS USED IN WILDLIFE BIOLOGY CLASS

I have been asked to provide the text names for resources we’ve used in the wildlife biology class. My two main resources are:

Introduction to Wildlife and Fisheries, an Integrated Approach. Willis, Scalet, and Flake. Department of Wildlife and Fisheries Sciences, South Dakota State University. W.H. Freeman and Company, NY. 2009.

The Wild Mammals of Missouri. Schwartz and Schwartz. University of Missouri Press and Missouri Department of Conservation. 1981 (any version will do).

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