Ever wonder why the northern and summer hemispheres have opposite seasons? Or why the longest day of the year is considered the start of summer?
For elementary students, Enchanted Learning defines the terms solstice and equinox, and explains why we have four seasons.
With illustrations and animations, this online exhibit from the Liverpool Museums explains how the tilt of the Earth's axis causes the Earth's four seasons, and how a sundial works.
"The Earth spins on a tilted axis about once every 24 hours to create what we know as day and night. This axis is an invisible line through the center of the Earth."
For high school and college students, retired NASA physicist David Stern explains the earth's orbit around the sun, why we have seasons, and answers lots of related questions.
It is a common misconception that the seasons are caused by the Earth's changing distance to the sun, as it travels in an elliptical orbit around it.
GIve Your "STAR DAD" His Own Web Page Of Love And Appreciation! Free Features For "STAR DADS OF THE USA" In Honour Of Independence Day! Show Dads Home Or Abroad How Much They Are Loved! It Only Takes A Few Hours To Get Your "STAR DAD" Web Page!
Sonora Dodd first proposed her Father's Day idea in 1909. Dodd wanted a special day (much like Mother's Day) to honor her father, William Smart. Smart, a Civil War veteran, singlehandedly raised Dodd and her five siblings on a farm in rural Washington, af
"How is your father's life different from his father's? His grandfather's? Your's?" This thoughtful Father's Day site is quite different from most because of its focus on ideas -- rather than projects.
DLTK Kids specializes in print, color, cut and glue crafts, and their Father's Day collection is impressive.
"Histories, stories, and fun facts to share with Dad" include History of the Necktie, Father's Day Timeline and facts from the census bureau such as the number of U.
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