http://www.sharinglinks.com/tags/earth Recent Earth bookmarks posted to SharingLinks.com. SharingLinks.com is an online bookmark manager and a community of parents and teachers. 60 http://www.surfnetkids.com/seasons_of_the_year.htm 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? surfnetkids Tue, 17 Jul 2007 22:21:46 +0000 earth kids science seasons surfnetkids teachers http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Seasons.shtml For elementary students, Enchanted Learning defines the terms solstice and equinox, and explains why we have four seasons. surfnetkids Tue, 17 Jul 2007 22:19:46 +0000 earth science seasons http://www.liverpoolmuseums.org.uk/nof/sun/ 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. surfnetkids Tue, 17 Jul 2007 22:18:03 +0000 earth science seasons http://ksnn.larc.nasa.gov/k2/s_seasons.html "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." surfnetkids Tue, 17 Jul 2007 22:16:16 +0000 earth science seasons http://www.phy6.org/stargaze/Sseason.htm 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. surfnetkids Tue, 17 Jul 2007 22:12:53 +0000 earth science seasons http://www.windows.ucar.edu/tour/link=/the_universe/uts/seasons1.html 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. surfnetkids Tue, 17 Jul 2007 22:10:55 +0000 earth science seasons http://kids.earth.nasa.gov/ adelphia Fri, 16 Mar 2007 00:33:20 +0000 earth nasa http://www.surfnetkids.com/earth_day.htm April 22, 2006 is the thirty-sixth celebration of Earth Day. This year's theme is Climate Change as Earth Day Network embarks on a three-year campaign focusing on solutions to global warming. Although ideally everyday should be Earth Day, the annual holid surfnetkids Wed, 21 Feb 2007 10:00:00 +0000 day earth kids surfnetkids teachers http://www.earthday.net/resources/2006materials/ EcoKids is Canada's environmental youth education program, and even though site membership is restricted to Canadian youth groups, there's oodles of material for non-members. surfnetkids Wed, 21 Feb 2007 10:00:00 +0000 day earth http://www.kidsdomain.com/holiday/earthday/ "In 1963, former Senator Gaylord Nelson began to worry about our planet. surfnetkids Wed, 21 Feb 2007 10:00:00 +0000 day earth http://www.kidsforsavingearth.org/ Clinton Hill succumbed to cancer at age eleven, but before he died he channeled his passion for the environment into a kids' club dedicated to saving planet Earth. surfnetkids Wed, 21 Feb 2007 10:00:00 +0000 day earth http://kids.earth.nasa.gov/ "Can scientists predict the global impacts of increased levels of pollutants in the atmosphere? Will the planet warm because increased levels of greenhouse gases, produced by the burning of fossil fuels, trap heat and prevent it from being radiated back i surfnetkids Wed, 21 Feb 2007 10:00:00 +0000 day earth http://earthday.wilderness.org/ "What can you do this Earth Day? Learn about the Arctic Wildlife Refuge in Alaska. surfnetkids Wed, 21 Feb 2007 10:00:00 +0000 day earth