L2 | Volcanic Erruptions Flashcards
TRUE OR FALSE :
The magma that reaches Earth’s surface is called caldera.
FALSE
[CORRECT ANSWER] LAVA
An extinct volcano is a regularly erupting volcano.
False
A vent is the opening on the Earth’s surface from which volcanic materials are expelled.
True
A volcano that is not currently erupting but still capable of doing so is said to be dormant.
True
One of the instruments used to predict an eruption is a Richter Scale.
False
CORRECT ANSWER : Seismic Waves
TRUE OR FALSE :
The rock material deep within the Earth’s crust is in a solid state.
FALSE :
The rock material deep within the Earth’s crust is in a MOLTEN state & under great pressure from the weight over it.
causes the formation of volcanoes over time
MELTED ROCK deep within the Earth’s crust
TRUE OR FALSE :
Tremendous heat and pressure cause the volcano to spew out molten rocks, thus making it active.
TRUE
volcanoes that erupt or have erupted during the past 1000 years
ACTIVE VOLCANOES
volcanoes in the Philippines that have erupted in the last few years
- Taal Volcano
- Mayon Volcano
- Mt. Pinatubo
- Mt. Bulusan
from volcanic eruption that reaches many areas farther to neighboring towns
ASHFALL or ASH DEPOSIT
- molten rocks that rise from below the ground to the surface of the eart due to very high temperature & pressure
- liquid composed of oxygen, silicon, calcium, iron, aluminum, magnesium, sodium, potassium, titanium, ang manganese
MAGMA
contents of magma
- crystals
- fragments of rocks
- gases
- superheated molten material (magma) flows out to the surface
- flows as red, gray or black out of vents
LAVA
TOP opening of a volcano where lave flows out
CRATER
