WorksheetsVolcanos 9.2
Total questions: 10
Worksheet time: 5mins
____________is a vent in earth crust through which milted or molten rock flows.
magma
volcanos
lava
hotspots
The Cascade volcanoes are formed by the subduction of an oceanic plate under a continental plate.This statement indicates that they were formed at which of the following location ?
mid-ocean ridge
hotspot
convergent plate boundary
divergent plate boundary
Rhyolite-forming magma has more silica ?
True
False
Which layer of Earth is liquid and made up of nickel and iron ?
inner core
crust
mantle
outer core
Which kind of volcanos flow is also called Lahar.
lavaflow
midflow
waterflow
pyroclastic flow
____________involve an oceanic and a continental crust.Fill the blank.
Convergent boundaries
Plate boundaries
Divergent boundaries
What type of volcano is Kilauea , Which is located in Hawaii ?
caldera
composite volcano
shield volcano
Which volcanic gas can block out sunlight ?
hydrogen
oxygen
nitrogen
sulfur dioxide
A very hot area below Earth crust is called composite volcano ?
True
False
What is a characteristic of low silica magma ?
light color
low viscosity
high viscosity
ash
