Science worksheets for class 11
Access printable science worksheets for class 11
The long tube in the ground that connects the magma chamber to Earth's surface is called the _____________.
Crater
Pipe
Vent
Magma Chamber
Once magma reaches the Earth's surface it is called.......
Silica
Lava
Rock
Molten
Magma leaves a volcano through a....
Sill
Vent
Chamber
Crater
Explosive eruptions occur if a volcano's magma is
high in viscosity
Mafic
Low in viscosity
Extremely hot
When a volcano erupts quietly, what kind of mountain forms?
A Shield Volcano
A Cinder Cone Volcano
A Composite Cone Volcano
TRUE or FALSE: A volcano that erupts quietly will produce a lot of cinders, ash, and bombs
TRUE
FALSE
What provides the force that causes a volcano to become explosive?
Mafic flows
Magma density
Dissolved gases trapped in magma
Extreme heat
The main hazard from a quiet volcanic eruption is _____________
Volcanic gases
Lava Flows
Pyroclastic Flows
Geysers
Volcanoes with steep sides made of layers of ash is called......
Cinder Cone
Shield Volcano
Composite Volcano
Tall, cone-shaped mountains made of both cooled lava layers and layers of ash are called
shield volcanoes
composite volcanoes
lava plateaus
cinder cone volcanoes
What do we call molten hot liquid rock while it is still below the Earth's surface?
Magma
Igneous
Cinder
Lava
What volcanoes are described as having a wide base?
Shield Volcanoes
Cinder Cones
Composite Volcanoes
Calderas
At what type of plate boundary are most above sea volcanoes found?
Divergent
Convergent
Transform
Between what 2 types of crust are most above sea volcanoes located? (throwback to Unit 1)
Continental - Continental
Oceanic - Oceanic
Oceanic - Continental
This is where the volcanic materials that erupt are stored
Vent
Conduit
Side Vent
Magma Chamber
How fast a lava is able to flow is based on its
Location
Viscosity
Amount
Weight
A fluid's thickness and resistance to flow is called....
Viscosity
Consistency
Thickness
Magma
From what layer of the earth would volcanic magma come from?
Crust
Inner Core
Upper Mantle
Lower Mantle
Which is the hotter lava?
Mafic
Felsic
A common mafic lava flow?
Blocky
A'a
Pahoehoe
Lahar
This picture is most likely what type of lava?
Mafic
Felsic
When volcanic ash mixes with water, it forms violent mudflows called ______________
Rolling Ash
Lapilli
Ash Flood
Lahar
One of the biggest risks of volcanic ash is
Breathing it in
Being burned alive
Warming the planet
Destroying aircraft
Chunks of magma that are cooled into rocks as they are thrown in the air are
Volcanic bombs
Pyroclastic Flow
Lahars
Blocks
What happened to the people in the picture from Pompeii
Covered by a lahar
Coated in lava
Coated in pure ash
Choked by volcanic gases
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