Earthquakes
What is Magnitude?
The strength of an earthquake
What is a fault line?
The space between tectonic plates
What kind of boundary is this?
Two plates moving away from each other?
Divergent boundary
List the names of the two(2) bedrock samples you looked at in class
Basalt
Granite
True or false: Volcanic activity and earthquake activity are not related to each other
false
What is an epicenter?
Exactly where in the crust the earthquake began
What is a tectonic plate made of? BE SPECIFIC
large pieces of oceanic/continental crust
What kind of boundary is this?
When two plates slide past each other
Transform boundary
List the names of the two(2) samples of sedimentary rock we looked at in class
Limestone
Sandstone
What happens to the temperature the further underground you go?
it gets hotter
Where do earthquakes tend to occur?
Along fault lines/plate boundaries
What happens to DENSER crust when it collides with LESS DENSE crust?
the denser crust sinks underneath the old crust
What type of boundary is new crust formed at?
Divergent boundaries
What are sediments?
tiny particles of rock, sand, dirt, and gravel.
Where is old crust recycled?
Convergent boundaries (when dense crust goes under less dense crust)
What causes an earthquake to form?
pressure building between tectonic plates releases suddenly due to plate movement
What happens when LESS DENSE crust (continental) collides with LESS DENSE (continental) crust?
Mountain ranges form
Earthquakes
What causes tectonic plates to move?
the convection currents of the magma under the plates pulls them
Describe what Creeping means
When heat and pressure causes rock to change shape
Pangea
Daily Double! (double points if you get this correct!)
What magnitude was the greatest earthquake ever recorded in HUMAN history?
9.5 Mag. Great Chilean Earthquake - 1960
What is causing Mount Everest to move 4cm to the NE every year? BE SPECIFIC
While colliding with the Eurasian plate, the Indian plate is taking the Mountain with it
What is causing Mt. Everest to grow 2cm each year? BE SPECIFIC
two plates colliding in a convergent boundary. These cause mountains to form
Everywhere on Earth, this type of rock is found.
Bedrock
Describe how a convection current in Earth's mantle moves. BE SPECIFIC