natural hazards

Cards (10)

what happens at a conservative plate boundary  
the plates slide past each other at different speeds.
what is a natural hazard?
extreme natural events that can cause loss of life, damage property & disrupt human life
what are the 2 types of natural hazards?
tectonic and climatic hazards
what are tectonic hazards?
when the earths crust moves. e.g plates move, tension builds, causing a earthquake
what is a climatic hazard?
When a region has certain whether conditions e.g heavy rainfall = flooding
what is oceanic crust ? 
found underneath the ocean is denser than continental crust and can be subducted.
what is continental crust ?
found under landmasses, or continents, older than oceanic crust and less often destroyed.
what is the distribution of earthquakes? 
earthquakes are found along all types of plate margins.
what is the distribution of volcanos ?
volcanoes only occur along constructive and destructive plate margins.A lot of volcanic activity occurs in the 'ring of fire'.
what is atmospheric pressure ?
the general air movement around the Earth due to pressure and temperature.