Beem
Volcanoes are openings in Earth’s crust (or plates) that allow ____ from below the plates to be released.
melted rock, steam, and other gases
Volcanoes are most often found close to a boundary between ________.
oceanic and continental plates
Oceanic plates have _______ at the top of the plate.
water soaked into the sediments
Volcanoes can slowly create new land or land forms as lava pours out and ________. These ____ build up over time as eruptions continue to bring lava to the surface.
solidifies into new layers of rock
Volcanoes can also quickly destroy mountains and other landforms when lava, steam, and gases __________.
explode with great force from within Earth
Mt. St. Helen's shrunk by ________ft.
1,314 ft
Oceanic plates are more dense than continental plates, so when they collide, the ______ will move below the ________.
oceanic plate will move below the continental plate
As an oceanic plate moves under a continental plate, the rock and sediments melt and the water boils and becomes _______. These melted materials and ______ from the oceanic plate move upward through the openings in the continental plate and out of Earth through volcanoes
steam
The two types of forces are ___________ and _________.
Constructive forces and destructive forces.