plate tectonics
who came up with the theory of plate tectonics
Alfred Wegener
name the 3 kinds of earth quakes
explosive
tectonic
volcanic
what kind of rock is present around subduction zones, is it a strong kind of rock?
igneous rock is very hard
valcanoes are always made of what kind of rock
igneous
what plate boundary has the youngest rock
divergent/spreading
what is the driving force that moves the plates
convection curents
earthquakes at subduction zones might form what disaster in the ocean?
tsunamis
what kind of shape is the most stable
triangles
what are the 3 kinds of volcanoes
strato, cinder cone, shield
what plate boundary forms a deep ocean trench
convergent/colliding
what feature forms the chain of Hawaiian islands and volcanoes
a hot spot
what plate boundary forms the most devastating earthquakes
sliding
what is your best bet to surviving an earthquake
duck and cover and hang on
what is the largest volcanic system on earth
Yellowstone super volcano
what feature of the sea floor is in the middle of the atlantic
midocean ridge
which plate are we located on here in Minnesota
North american
what is the most dangerous part of a powerful earthquake
falling buildings, debris, fires
what was the main cause of the great dying
describe how devils tower was formed
answers may vary
what is a middocean ridge
underwater mountain range at a separating plate
what are the 3 requirements of being an index fossil
widespread
distinctive
only appearing in one geologic time period
A 8.0 earthquake is how much stronger that a 7.0 on the Richter scale
10 times stronger
what is the status of mount fuji in japan
active, dormant, extinct
dormant
what kind of basaltic lava is much more liquid and flows
pahoehoe
what was the loudest sound ever heard?
the eruption of krakatoa