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The seasons are the result of Earth's axial tilt; describes solstices and equinoxes.

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Shrinking Shadows
Teacher Contributed

Shrinking Shadows

Why It Matters

Is it possible to not have a shadow?

Where on earth would you experience no shadow cast by the sun at noon?

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  1. Shadows are affected by the location of the sun. Where is the sun in relation to the bike that is casting a shadow?
  2. What is unusual about the following image? What does this tell us about the location of the sun?
  3. What can make the location of the sun change other than the time of day? Why is the size of Shaq’s shadow changing over the course of a week? http://science.nasa.gov/science-news/science-at-nasa/2002/21jun_shadows/
  4. Here is an investigation that you can do to explore the changing of seasons further: http://www.exploratorium.edu/ancientobs/chaco/HTML/TG-shadows.html
  5. What do you think? Where should we be standing to experience absolutely no shadow at noon?

Resources Cited

Stian Martinsen. Flickr. http://www.flickr.com/photos/vorty/148420150/

Drain. Flickr. http://www.flickr.com/photos/stuffandnonsense/15402500/

Matt Benton. Flickr. http://www.flickr.com/photos/z-two/4436536543/sizes/z/in/photostream/

NASA. http://science.nasa.gov/science-news/science-at-nasa/2002/21jun_shadows/

Exploratorium. http://www.exploratorium.edu/ancientobs/chaco/HTML/TG-shadows.html

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