science 3rd quarter Flashcards
large, nearly perfect slope structure from alternate solidification of both lava and pyroclastic deposit
composite cone or stratovolcano
build from ejected lava fragments
cinder cone
has a steep slope, wide crater and most abundant of the three volcano types
cinder cone
three volcanic cones
shield cone
cinder cone
composite cone
formed by accumulation of lava that oozes out from the volcano
shield cone
formed from a non-viscous lava that flow freely, producing a broad, slightly domed structure that looks like a warrior’s shield
shield cone
what are these volcanic materials ejected from the volcano
lava
broken rocks
lava bombs
fine ash
dust
a period weak to violent eruption characterized by fountain lava
strombolian
types of volcanic eruptions
phreatic or hydrothermal
phreatomagmatic
strombolian
vulcanian
plinian
a stream-driven eruption as the hot rocks come in contact with water
phreatic or hydrothermal
short-lived, characterized by ash columns
phreatic or hydrothermal
a violent eruption due to contact between water and magma
phreatomagmatic
a large column of very fine ash and high-speed and sideway emission of pyroclastic called base surges
phreatomagmatic
characterized by tall eruption columns that reach up to 20 km high with pyroclastic flow and ashfall tephra
vulcanian
excessively explosive type of eruption of gas and pyroclastics
plinian or vesuvian
sign of impending volcanic eruption
drying up of springs/wells around the volcano
increase in the temper of hot springs
magmas with low silica content are
less viscous
magmas with high silica content are
more viscous
property of the material’s resistance to flow
viscosity
the higher the temperature the magma
the less viscous the magma
the lower the temperature of magma
the more viscous the magma
magma with low amount of gas
is more viscous
magma with high amount of gas
is less viscous
built in an area where it is particularly hot just below the surface such as near the geysers, hot springs or volcanic activity
power plants
imaginary lines on a globe or map that measure distance in degrees north or south of the equator. They are parallel to the equator
latitude
usual weather condition in a particular place or region for a long period of time
climate
near the equator
tropic zone
receives a lot direct sunlight
tropic zone
temperatures are high most of the year
tropic zone
land here can be desert or tropical rainforest
tropic zone
three main climate zones
polar zone
temperate zone
tropic zone
farthest from equator
polar zone
indirect sunlight all year long
polar zone
coolest temperature of all the climate zones
polar zone