Volcanoes
BrainPop "Volcanoes - Movie." BrainPOP. Web. 10 Feb. 2016.
World Book Online "Volcano." World Book Kids. World Book, 2016. Web. 10 Feb. 2016.
Encyclopedia "Volcano." UXL Encyclopedia of Science. 2002. Encyclopedia.com. 10 Feb. 2016
Tsunamis
BrainPop "Tsunami - Movie." BrainPOP. Web. 10 Feb. 2016.
World Book Online -Kids "Tsunami." World Book Kids. World Book, 2016. Web. 10 Feb. 2016.
World Book Online - Student Ward, Steven. "Tsunami." World Book Student. World Book, 2016. Web. 10 Feb. 2016.
Encyclopedia.com Petroff, Catherine M.. "Tsunamis." Water:Science and Issues. 2003. Encyclopedia.com. 10 Feb. 2016
Earthquakes
BrainPop "Earthquakes- Movie." BrainPOP. Web. 10 Feb. 2016.
World Book Online - Student Stock, Joann. "Earthquake." World Book Student. World Book, 2016. Web. 10 Feb. 2016.
Encyclopedia.com "Earthquake." World of Earth Science. 2003. Encyclopedia.com. 10 Feb. 2016
Grand Canyon
PBS Learning Media
World Book Online - Kids
World Book Online - Student
BrainPop "Volcanoes - Movie." BrainPOP. Web. 10 Feb. 2016.
World Book Online "Volcano." World Book Kids. World Book, 2016. Web. 10 Feb. 2016.
Encyclopedia "Volcano." UXL Encyclopedia of Science. 2002. Encyclopedia.com. 10 Feb. 2016
Tsunamis
BrainPop "Tsunami - Movie." BrainPOP. Web. 10 Feb. 2016.
World Book Online -Kids "Tsunami." World Book Kids. World Book, 2016. Web. 10 Feb. 2016.
World Book Online - Student Ward, Steven. "Tsunami." World Book Student. World Book, 2016. Web. 10 Feb. 2016.
Encyclopedia.com Petroff, Catherine M.. "Tsunamis." Water:Science and Issues. 2003. Encyclopedia.com. 10 Feb. 2016
Earthquakes
BrainPop "Earthquakes- Movie." BrainPOP. Web. 10 Feb. 2016.
World Book Online - Student Stock, Joann. "Earthquake." World Book Student. World Book, 2016. Web. 10 Feb. 2016.
Encyclopedia.com "Earthquake." World of Earth Science. 2003. Encyclopedia.com. 10 Feb. 2016
Grand Canyon
PBS Learning Media
World Book Online - Kids
World Book Online - Student
Books:
Benoit, Peter. The Krakatau Eruption. New York: Children's, 2011. Print.
Simon, Seymour. Wild Earth. New York: Scholastic, 2009. Print.
Furgang, Kathy, and Carsten Peter. Everything Volcanoes & Earthquakes. Print.
Watts, Claire. Natural Disasters. London: DK Pub., 2006. Print.
Kalman, Bobbie. Volcanoes on Earth. New York: Crabtree Pub., 2008. Print.
Austin, Elizabeth. "Earthquakes, Volcanoes, and Tsunamis." Reading A-Z. Web. 10 Feb. 2016.