Essay
Describe the three emissions, and the percentage of danger.
Liquid emissions such as lava usually moves slowly and doesn't cause that much deaths. However, some buildings may be destroyed. Gaseous emissions are extremely more dangerous such as pyroclastic flow. They most cause burns and suffocation. Solid emissions such as ash, cinders, blocks, and bombs also lead to suffocation, injury and even death.
VEI
Volcanic Explosivity Index
Name three solid emissions.
The most common volcano?
Stratavolcano
What else do we cal the Circum-Pacific Volcano?
The Ring Of Fire
Why do geysers and hot springs produce distinctive material deposits?
Because hot groundwater is very effective at dissolving materials in the rocks that flow over. When the hot water gets warmer and reaches and surface and the minerals deposits.
Thick layers of igneous rocks cover many places in the world, including the ocean for. These regions are called _________
Flood basalts
Name the main liquid emission.
Lava
Quiet eruptions of mostly runny, balastic lavas.
Shield volcanoes.
A depression at the top of a cone
Crater
Why is the name "stratovolcano" appropriate?
It unontiusoly releases lava and pyroclastic materials. And they composed of tephra and multiple layers and strata means layers
Three classifications of volcanoes
Structure, activity and explosivity.
Name a gaseous emission
Lahar or fumarole
Eruptions of bursts of gases that eject mostly pyroclastic materials.
Cinder cones
Huge craterlike depression is called a
Caldera
Compare old-earth and young-earth views of of volcanoes.
Composite cones
A layer of loose pyroclastic materials and ash covering the ground.
Tephra
An inactive but eroded volcano.
Dormant
Viscous lava has more _________
Silica
How can earth scientists help reduce the risks of natural hazards from vocanoes?
Limiting buildings
Warning pilots about ash clouds
Most iteneral heat comes from
Radioactive decay
Name the three emissions
Solid, liquid and gaseous.
A volcano that shows no signs of seismic or volcanic activiy.
Extinct volcano
What is the largest volcanic explosion ever?
The Yellowstone Caldera