Volcanoes on the Earth's Crust

My name is Kim Allen and I'm a second grade teacher at Augusta Prepratory Day School and this web page lesson helps teach my second graders about volcanoes.

 

A volcano erupts when molten rock and gases-called magma- flow through a crack in Earth's crust.  Volcanos mostly happen where the Earth's moving plates open up cracks and weak spots in the crust.  When a volcano erupts, the gases escape into the air and lava pours out.  Around the volcanoes opening a cone is formed.  These cones can turn into mountains over time.





Go back to the Home Page Go to Earth Structure Page

Go to other Websites
 
 


http://rpsec.usca.sc.edu/Classwork/731sp2001/Lesson/Allen/earth3.html (January, 2001)

"The views expressed on this page are not necessarily those of the University of South Carolina."