問題一覧
1
This is a hot, molten rock that reaches the surface of the earth through a volcanic vent
Lava
2
It is the most harmful volcanic hazard
Pyroclastic flow
3
It is a special kind of tephra that produces bombs and blocks
Balistic projectiles
4
Flammable gas and smells like a rotten egg
sulfur dioxide
5
It refers to the component of a magma which determines its viscosity
silica
6
It is the fastest flowing lava because of its relatively low viscosity
Basaltic lava flows
7
Usually associated with violent eruptions involving pyroclastic flows and with very steep landforms
rhyolite
8
This term reference to volcanic rocked and lava materials that are ejected into the air by explosions or carried upward by irruption columns, hot gases
tephra
9
It refers to a hot, glowing, broken piece of lava with collapse caused by gravity
Nuee Ardente
10
Which of the following health effects Of pyroclastic ash refers to the fibrous reaction of the lungs caused by inhalation of crystalline silica
silicosis
11
This term refers to hot molten rock and is stored in the earths crust
Magma
12
It is the movement of the mantle that caused basaltic lava comes out of divergent plate, margins or mid oceanic ridges
Mantle convection
13
It is a large horseshoe like shape of the Crator left behind by the volcanoes collapse
amphitheater
14
Volcanic gases is a natural product of respiration
carbon dioxide
15
These are moving masses of rock, soil, and snow that occur when the flank of a mountain or volcano, collapses, and slides down slope
Volcanic debris avalanche
16
It is a violent type of mud flow or debris flow composed of a slurry of pyroclastic material, rocky debris and water
Lahars
17
It is the source of heat that contributes to the heat inside the earth
Radioactive decay
18
This type of lava formed by the sudden cooling of lava that is deposited underneath
Pillow lava flow
19
Involves the collapse of an eruption column associated with eruption of mount pinatubo and mount Mayon
Soufriere
20
It is a natural way of sorting fragments of deaf and ballistic projectiles during volcanic eruption
Winnowing process
21
Type of lava composed of thin flows with smooth surface, sometimes feature ropey folds
Pahoehoe