LESSON FOUR: TECTONICS AT WORK
Pages 45-46:
http://pubs.usgs.gov/publications/text/dynamic.html

LESSON EIGHT: EARTHQUAKE PREDICTION AND PREPAREDNESS
Pages 83-84:
http://quake.wr.usgs.gov/

LESSON TEN: TYPES OF VOLCANOES
Page 113:
http://volcano.und.edu
Pages 115-116:
http://volcano.und.edu

LESSON ELEVEN: THE RING OF FIRE!
Page 119:
http://volcano.und.edu
Page 121:
http://volcano.und.edu

LESSON TWELVE: SCIENTISTS WHO DARE
Page 127:
http://volcano.und.nodak.edu/vwdocs/planet_volcano/lunar/Overview.html
http://volcano.und.nodak.edu/vwdocs/planet_volcano/mars/Overview.html
Page 130:
http://volcano.und.nodak.edu/vw.html
Page 131:
http://www.soest.hawaii.edu/GG/ASK/askaseismologist.html

RESOURCES
(See page 148.)

United States Geological Survey—Earthquake Information
http://quake.wr.usgs.gov

University of North Dakota—Volcano World
http://volcano.und.edu

University of North Dakota—Plate Tectonics
http://volcano.und.nodak.edu/vwdocs/vwlessons/plate_tectonics/introduction.html

University of North Dakota—Volcanoes of Other Worlds
http://volcano.und.nodak.edu/vwdocs/planet_volcano/other_worlds.html

Global Earthquake Response Center
http://www.earthquakes.com/teachers.html

USGS Fact Sheet: Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines
http://geopubs.wr.usgs.gov/fact-sheet/fs113-97

USGS Fact Sheet: Mobile Response Team Saves Lives in Volcanic Crises
http://geopubs.wr.usgs.gov/fact-sheet/fs064-97

USGS Fact Sheet: Living on Active Volcanoes—The Island of Hawai
http://geopubs.wr.usgs.gov/fact-sheet/fs074-97

U.S. Geoglogical Survey Group Volcano Hazards Program
http://volcanoes.usgs.gov/main.html