Card Set Information
geology core knowledge 4th grade
Earth, Earthquakes, Volcanoes, Types of Mountains
What is a tsunami?
a wave caused by an underwater earthquake
What is a fault? (Earthquakes)
it's a crack in the earth's crust where movement has occurred
What is the famous fault in CA?
San Andreas Fault
How do you measure the intensity of an earthquake, and what is the name of the scale used to measure it?
A seismograph (machine) measure intensity
the Richter Scale is the name used to measure
What is a dormant volcano?
A volcano with no recent activity, but scientists believe will erupt again
What is an extinct volcano?
A volcano with no signs of activity over a very long period of time, thought to be unlikely to erupt in the future
What is the name of the theory of how the continents were once grouped into one large land mass that broke apart because of plate movement?
What is the movement of plates?
The idea that the earth's crust is broken into a number of plates that are slowly moving.
Name 3 famous volcanoes.
Mount St. Helens (WA state)
Parts of a volcano: (label on a diagram)
magma chamber, magma, vent, lava, ash and gases
Label a diagram of the interior of the earth. (what are the four parts?)
crust, mantle, inner core, outer core
What type of mountain is it when two plates collide, and the crust bends and buckles?
What type of mountain is it when there are sections of rock that are separated by faults, lifts up
What type of mountain is it in which magma explodes out of an opening in the crust?
What type of mountain is it when magma builds up and pushes on rock above?