Volcanoes Directions: Each of the sentences below is false. Make the sentence true by replacing the underlined word(s) with
a term from the list below. Use each term only once. NOTE: You may need to change a term to its plural form.

cinder cone composite volcano dissolved hot spot lava
magma shield volcano viscosity volcanic ash volcano
1. Molten rock erupts from a basalt.
2. Magma is molten rock that flows along Earth’s surface.
3. A shield volcano is not associated with any plate
boundary.
4. A cinder cone is large and steep-sided, occurs along
convergent plate boundaries, and results from explosive
eruptions.
5. Calderas have gentle slopes of basaltic lava; they are
commonly located along divergent plate boundaries and
ocean hot spots.
6. A composite volcano is small and steep-sided, and it
erupts basaltic lava.
7. Lava is present beneath Earth’s surface.
8. When magma erupts explosively, it can send particles
of rock and glass, or hot spots, into the air.
9. Magma’s resistance to flow is called its silica.
10. Magma contains solidified gases, including carbon