How can volcanic ash help the environment?
Magma leaves a volcano through a______________.
The greater the amount of silica, the higher the:
The sticky or viscous lava does not allow gases trapped in the volcano to:
As the basic lava flows more, it forms a:
These rising columns of magma are found in fixed locations deep within the:
In some eruptions,mudflows are forced over the?
A.earths mantle
B.ocean bed
C.earths surface
D.earths core
Lava that contains high amounts of iron and magnesium, but low amount of silica is known as
Fluidity of lava is determined by amount of
Volcanism that takes place when columns of molten magma in mantle rises from hot spot to Earth's surface, melting crustal plate directly above it, is known as
World's underwater ridges and islands were formed as a result of
Volcanoes that haven't erupted in historic times are known as
Compared to acid lava, basic lava travels