D LETTERS
Directions: Arrange the junbled letters to form the word that is being defined or
described. Write your answers in your notebook.
1.1ANLIPN
Excessively explosive type of eruption of gas and
pyroclastics
2. ACINLUVAN
Characterized by tall eruption columns that reach up to
20 m high with pyroclastic flow and ash fall.
3.STORMNAILOB A periodic weak to violent eruption characterized by
fountain lava.
4.CREATHIP
A steam-driven eruption as the hot rocks come in contact
with water.
5. GHAMMACITPEARO A violent eruption due to the contact between water and
magma
6. CONITTEC
They are large pieces of the Earth's crust which can
move towards, away from or alongside one another,
2
Directions: Arrange the junbled letters to form the word that is being defined or
described. Write your answers in your notebook.
1.1ANLIPN
Excessively explosive type of eruption of gas and
pyroclastics
2. ACINLUVAN
Characterized by tall eruption columns that reach up to
20 m high with pyroclastic flow and ash fall.
3.STORMNAILOB A periodic weak to violent eruption characterized by
fountain lava.
4.CREATHIP
A steam-driven eruption as the hot rocks come in contact
with water.
5. GHAMMACITPEARO A violent eruption due to the contact between water and
magma
6. CONITTEC
They are large pieces of the Earth's crust which can
move towards, away from or alongside one another,
2
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Answers & Comments
1. Pelean and Plinian- eruptions are the most dangerous and explosive of the eruption types.
2. Vulcanian- eruptions are small to moderate explosive eruptions, lasting seconds to minutes. Ash columns can be up to 20 km in height, and lava blocks and bombs may be ejected from the vent.
3. Strombolian and Hawaiian-eruptions
These are the least violent types of explosive eruptions. Hawaiian eruptions have fire fountains and lava flows, whereas Strombolian eruptions have explosions causing a shower of lava fragments.
4.Phreatic eruption
An eruption driven by the heat from magma interacting with water. The water can be from groundwater, hydrothermal systems, surface runoff, a lake or the sea. Phreatic eruptions pulverise surrounding rocks and can produce ash, but do not include new magma.
5. Phreatomagmatic- is a violent eruption due to the contact between water and magma.
6.Tectonics
The Earth's crust is broken up into a series of massive sections called plates. These tectonic plates rest upon the convecting mantle, which causes them to move.