Show:
Earthquakes
Plate Boundaries
Properties of Magma
Types of Volcanoes
Volcanic Eruptions
100
What causes earthquakes?
As the plates move it applies STRESS on rock.
100
Where do ALMOST ALL earthquakes and volcanoes occur?
On the edges of plate boundaries
100
What is the vocabulary term that means "a fluids resistance to flow."
Viscosity
100
What are the three types of volcanic landforms?
Shield Composite Cinder Cone
100
What are the two types of eruptions?
Quiet and Explosive
200
What ocean is surrounded by the RING OF FIRE?
Pacific Ocean
200
What is the most common COMPOUD found in highly viscous magma?
Silica
200
Which volcano has gently sloping sides and quiet eruptions?
Shield
200
What are some characteristics of a quiet eruption?
Low viscosity, High Temp, Low silica content
300
What type of stress occurs at a CONVERGENT boundary?
Compression
300
If lava is very HOT, will it have high viscosity or low viscosity?
LOW
300
Which volcano erupts a mixture of ashes, cinders, and bombs?
Cinder cone
300
What are some characteristics of an explosive eruption?
High Viscosity, Low Temperature, High Silica Content
400
What type of stress occurs at a TRANSFORM boundary?
Shearing
400
What two things affect the viscosity of magma?
Silica content and temperature
400
Which type of volcano has alternating eruption types?
Composite
400
What is the type of flow that comes from an explosive eruption?
Pyroclastic
500
What type of stress occurs at a DIVERGENT boundary?
Tension
500
Why do we need to call magma something different when it reaches the surface (lava)?
because a chemical reaction starts to occur: -a solid forms as the lava cools
500
What type of volcano erupts through the middle of a tectonic plate and not on the boundary?
Hot spot volcano
500
What type of eruption is likely to occur at a shield volcano?
Quiet