Earthquakes 1
Volcanoes 1
Volcanoes 2
Surprise Questions 1
Surprise Questions 2
100
Define Earthquake
Violent trembling or shaking of the earths surface
100
define volcanoe
opening in earths crust through witch multon rock gasses and ashes escapefom the mantel on to the earths surface
100
define cone
hill around vent of volcanoe
100
Define Richter Scale
measures force of earthquakes on a scale of one to ten
100
define geyser
a naterual sprong that shoots columns of steam and hot water high into the air
200
What Causes an Earthquake?
shifting of crustal plates
200
where do volcanoes form
on land or ocean floor
200
define active volcanoe
still errupting over 500 in world
200
define cinder cones
erupt violently hot ashes cinders volcanic bombs fly into air sticky lava wear away easily
200
where are they usually found
near volcanoes
300
Define Fault
crack in the earths crust
300
define magma
mass of melted rock that begines in earths crust called lava when it reaches the surface
300
define dormant
sleeping most volcanoes are dormant
300
define composite cones
like a layerd cake ( cinders and lava sticky lava that hardens quickly builds into steep sided volcanoe
300
what are the 3 soil types
topsoil subsoil bedrock
400
Where is a fault?
San Andres Fault, California
400
define volcanic ash
full of nutrient that enrich the soil
400
define extinct
shown no signs of life for over 1,000 years eventually erode
400
define rocks
combinatoin of 2 or more minerals
400
what are the 4 layers of the earth
crust mantle outer core inner core
500
Define Tsunami
Giant waves caused by underwater earthquakes or volcanoes near faults
500
define volcanic bombs
huge lumps of rock that blast up from errupting volcanoes can weigh up to 2 tons
500
define sheild volcanoe
gentle slpoes like a sheild erupts quietlyrunny lava get to be very large
500
define weathering
natural breakdown of rock material into smaller size
500
wegeners theroy about pangea
continantal drift
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