Natural Hazards Flashcards
(21 cards)
What is the name of the boundary where two plates are going alongside each other
Conservative plate boundary
What is the name of the boundary where two plates are going towards each other
Destructive plate boundary
What is the name of the boundary where two plates are going away from each other
Constructive plate boundary
Give an example of a destructive plate boundary
Nazca plate dives underneath the South American plate.
Give an example of a conservative plate boundary
Pacific plate NA plate
Give an example of a constructive plate boundary
Eurasian plate NA plate
What are the earths layer and in what order
Crust
Mantle
Outer core
Inner core
What are the state of matters of the layer of the earth
Crust: Solid
Mantle: Liquid
Outer core: semi molten
Inner core: solid
What is a hazard
An event that has the potential to harm people
What is a disaster
An event that has harmed people
What is a subduction zone
The subduction zone is the place where two plates come together, one riding over the other.
What is a fold mountain
Mountains formed by folding layers of the earth one upon the other, when tectonic plates clash
Give an example of a fold mountain range
Himalayas
What is an oceanic trench
A long narrow depression or hole on the sea floor
What is oceanic crust
Top layer of crust, about 4-7 miles thick, made of heavy rock like basalt
What is continental crust
Top layer of crust, 19 miles thick, made of light rock like granite
If oceanic and continental crust were to clash, who would go under
Oceanic, as it is heavier
What is the focus of an earthquake
The exact point where the earthquake originates from
What is the epicentre of an earthquake
The point above the focus of an earthquake
What is a seismograph
Seismographs are instruments that measure motions of the ground, in the Richter scale.
What is the Richter scale
a numerical scale, from about 1 to about 9, for expressing the magnitude of an earthquake
