Web Surf (7th): Catastrophic Events

Part 1: Hurricanes

http://spaceplace.nasa.gov/hurricanes/

Part 2: Tornadoes

http://www.nssl.noaa.gov/education/svrwx101/

Part 3: Floods

http://www.nws.noaa.gov/os/brochures/FloodsTheAwesomePower_NSC.pdf

Science Web Surf (7th): Organism Energy Transfers

Part 1: Energy Story
http://www.energyquest.ca.gov/story/chapter01.html

Part 2: How the Body Uses Energy
http://ironman.memorialhermann.org/performance-improvement/sports-science/nutrition/how-the-body-uses-energy/

Part 3: Chemical Energy
http://epiphanyvideoworks.com/Science/Hughes/Units/EnergyChemical.htm

Science Web Surf (7th): Physical & Chemical Changes

Part 1: Physical and Chemical Changes

http://www.ric.edu/faculty/ptiskus/chemical/

Part 2: Your Digestive System

http://kidshealth.org/PageManager.jsp?lic=1&article_set=54048&cat_id=20607#

Part 3: Identify Physical vs Chemical Changes

http://vital.cs.ohiou.edu/?page_id=161