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The more viscous or "stiff" types of magma usually contain more trapped gasses. When the magma reaches lower pressure near the surface, the gasses expand explosively, blasting ash and pumice into the air.
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What are two reasons that magma with a high silica content tend to cause explosive eruptions?
Magma with a high silica content tend to cause explosive eruptions because it has a stiff consistency and blocks the vents. When magma pushes from behind it more pressure happens which means the eruption will be explosive. It also prevents gas and water vapor from getting out. The gases will expand until it explodes.
List 5 potential hazards from computers in personal safety?
The potential safety hazards of active volcanoes are eruption, gas and ash clouds, lava flow and magma flow. The computer should be properly shut down if possible and loaded into a vehicle for transport out of the volcano zone.
What are dark colored igneous rocks called?
Granitic igneous rocks are light colored rocks of a low density. Granitic magma is thick and stiff and contains a lot of silicon and oxygen. Granitic magma can build up a great deal of pressure, which is released during violent volcanic eruptions.
What are the four types of lava that form at hot spots and their characteristics?
Aa is lava that forms a thick ,brittle crust . Pahoehoe is a lava that forms a thin crust. Pillow lava forms when lava erupts underwater. Blocky lava is kool, stiff lava that does not travel far from thr eruption site.
What is stiff bristle grass called?
Stiff bristle grass has many common names, including foxtail. That scientific name is Setaria viridis.
What are two reasons that magma with a high silica content tend to cause explosive eruptions?
Magma with a high silica content tend to cause explosive eruptions because it has a stiff consistency and blocks the vents. When magma pushes from behind it more pressure happens which means the eruption will be explosive. It also prevents gas and water vapor from getting out. The gases will expand until it explodes.
What eruptive style has a composite cone volcano?
Composite volcanoes typically erupt with explosive force: the magma is too stiff to allow easy escape of volcanic gases. As a consequence, tremendous internal pressures mount as the trapped gases expand during ascent, before the pent-up pressure is suddenly released in a violent eruption.
List 5 potential hazards from computers in personal safety?
The potential safety hazards of active volcanoes are eruption, gas and ash clouds, lava flow and magma flow. The computer should be properly shut down if possible and loaded into a vehicle for transport out of the volcano zone.
What forms when the gases in stiff magma expand rapidly and walls of gas bubbles explode?
ummm..i don't know!
What are four types pyroclastic material?
Volcanic bombs, large blobs of magma that harden in the air, lapilli, pebblelike bits of magma that harden before they hit the ground, volcanic ash, forms when the gases in stiff magma expands, and volcanic blocks, large angular pieces of solid rock.
Identify four types of pyroclastic material and the characteristics of each type of material?
Volcanic bombs, large blobs of magma that harden in the air, lapilli, pebblelike bits of magma that harden before they hit the ground, volcanic ash, forms when the gases in stiff magma expands, and volcanic blocks, large angular pieces of solid rock.
What is a sentence with the word stiff?
The dead body was already stiff when I found it there.
Are the stiff dylans gay?
of course stiff dylans are gay.It does not make a difference if they are stiff or not.
When was Be Stiff created?
Be Stiff was created in 1977.
What is a stiff sentence?
when my friend was bad she was stiff
What is a sentence using the word stiff?
The leather dried stiff and hard. She had a stiff, formal demeanor.
How do you use the word stiff in a sentence?
he was very stiff from working out too much. she was stiff from sitting too long. i was stiff from sleeping.....ect,ect.
