Earthqukaes/ Tsunami/ Volcanoes Flashcards
What does “Shock waves” mean?
Seismic activity generated by the earthquakes.
What does Epicentre mean?
The point in the earth’s surface directly above the focus
What is a Earthquake?
A sudden and brief periods of intense ground shaking
What is a Richter scale?
A scale which measures earthquake based on scientific recording of the amount of movement
What is a Mercalli scale?
A means of measuring earthquakes by describing and comparing the damaged done.
What does “Focus” mean when talking about earthquakes?
The point in the earth’s crust where the earthquake originates
How many types of volcanoes are there?
Four “well we only learning two types of volcanoes”
What are the types of volcanoes called?
Composite volcano
Shield volcano
Describe a Shield volcano!
Low, wide cone Fast running lava, thin Frequent, but smooth, gentle eruptions Gentle slope On a Constructure boundary normally and found near or in the sea Large vent
Describe a Composite Volcano!
Cone shaped volcano Violent eruptions Frequent Vents. Find on a Destructive boundary. Has one large vent. Lava is thick like treacle Volcano is built on layers of rock,ash and lava ( dry out)
What is a Tsunami?
A long, high sea wave caused by an earthquake or other disturbances