Show:
Earthquakes
Waves
Volcanoes
Continental Drift
Plate Tectonics
100
is the location inside Earth where an earthquake starts
What is the focus?
100
They are surface waves, secondary waves, and primary waves(P-waves, L-waves and S-waves)
What are the types of seismic waves
100
The movement of tectonic plates produces three distinct types of volcanoes
What is composite volcanoes, shield volcanoes and rift eruptions?
100
Continents have not always been in their present locations but have "drifted" there over millions of years
What is Continental drift theory?
100
Crust and upper mantle
What is lithosphere?
200
the point on Earth's surface directly above the focus
What is the epicentre?
200
Ground squeezes and stretches in direction of wave travel
What is Primary wave?
200
These types of volcanoes occur in ocean basins
What is shield volcanoes?
200
He proposed the continental drift theory
Who is Alfred Wegener?
200
plates that collide
What is converging plates
300
depth of focus is 0-70km
What is shallow focus?
300
the study of earthquakes and waves
What is seismology?
300
Found near subduction zones
What is composite volcanoes?
300
millions of years ago all the continents were joined together
What is supercontinent
300
a partly molten layer in the upper mantle
What is asthenosphere
400
has helped scientists understand where and how often earthquakes occur
What is plate tectonic theory?
400
These types of graphs can determine the distance from a particular earthquake monitoring station to the epicentre of the earthquake
What is time-distance graphs
400
The most recent volcanic eruption in the area occured about 70,000 years ago
What is Yellowstone National Park
400
Fossils of Mesosaurus have been found here (2 places)
What is found in southeastern South America and southwestern Africa?
400
plates that are spreading apart
What is diverging plates?
500
An area where large earthquakes can occur
What is Juan De Fuca?
500
A wave that disappears at the bottom of the mantle
What is S-waves (secondary)?
500
The least explosive or violent
What are rift eruptions?
500
refers both to the extent of ancient glaciers and to the rock markings they have left behind
What is Paleoglaciation
500
A deep underwater valley
What is a trench?