3rd Flashcards
what are volcanos?
a vent or opening in hot gasses, rocks and lava are ejected
how are volcanoes formed?
through convergence and divergence of plates
where are volcanoes commonly found?
the pacific ring of fire
part of a volcano where its the site of erruption
volcanic vent
circular depression around the vent (the hole)
volcanic crater
crater that widens due to the collapse of the walls
caldera
underground reservoir of molten rocks (magma)
magma chamber
aka magma when it reaches the surface of the earth
lava
cloud ash, lava fragments carried through air and vapor
pyroclastic material
3 volcanos according to shape
cinder cone
shield
composite
built from cinders, a steep/tall hill formed above a vent. its explosions are only pyroclastic material
cinder cone (taal)
have gentle slopes due to the spreading of lava (short volcano), its explosions are only lava, no pyroclastic material
shield volcano (mauna loa)
aka stratovolcano, a mix of cinder cone and shield ejects both lava and pyroclastic materials
composite volcano (mt fuji
found alongside composite volcanos
lava dome
3 volcanos according to activity
active
dormant
extinct
exploded in the recent times and is capable of exploding
active (taal-smallest)
exploded in historical times but are now quiet and inactive (still capable of erupting)
dormant (mt fuji)
no record of activity by scientists (do not have enough lava supply in the chamber
extinct (mt taranaki)
science that deals with the atmosphere
meteorology (meteorologists)
condition in the atmosphere for a short period of time
weather
average pattern of weather condition (long period of time)
climate
factors that climate depend on
latitude, altitude, topography, presence of bodies of water, wind systems
used for classifying the world’s climates
koppen-geiger classification map
based on the Koppen Geiger map, what climate the does majority of the Philippines have?
tropical rainforest