Tectonic Plates
Plates move towards each other
What is convergence?
Man-made and Natural
What are the two types of disaster that we have studied?
Oceanic and Continental
What are the two types of tectonic plates?
Why do tectonic plates move?
Steep slopes, made from high viscosity lava and very powerful eruptions
What is a strato volcano?
Plates move away from each other.
Meteorological
Australian and Pacific
What are the names of the two plates that New Zealand sits on the boundary of?
Circular movement patterns in fluids (liquids and gases) driven by temperature differences
What are convection currents?
Conical shape
Smaller than stratovolcanoes
Bowl shaped crater
Usually shaped from a single eruption
What are the features of a cinder cone volcano?
Plates move in an opposite direction from each other
Geological
What is the type of disaster that is caused by the earth moving?
Volcanoes and earthquakes
What is produced by a subduction zone?
Warm, less dense fluid rises, while cool, lighter fluid sinks.
How do convection currents work?
Broad, gentle slopes.
Formed by low-viscosity lava.
Not very tall.
What are the features of a shield volcano?
What is subduction?
Biological
What is a disaster that is caused by things that make people sick?
Mountains
What does a continental collision produce?
At conversion plate boundaries, when subduction occurs, the oceanic plate melts, leading to a build up of magma and gases. This erupts through a crack in the earth's crust
A dangerously fast flow of liquid, volcanic material, rocks and debris that flows down the side of a volcanic mountain, towards lower-lying areas.
What is a lahar?
New crust
What is formed when tectonic plates move apart (divergence)?
Hydrological
What is a disaster to do with water?
Ring of Fire
What is the other name for the boundary of the Pacific Plate with the other plates?
Strato, cinder cone, shield
What are three types of volcano?
Snow melt
Lots of rain (especially after an eruption)
Crater lake collapse
How does a lahar form?