Hazards Flashcards
volcano
A rupture in the crust of Earth that allows hot lava volcanic ash and gases to escape
tsunami
a large sea wave caused by an earthquake
earthquake
a violent shaking of the ground, typically causing great destruction, as a result of movements of the earth’s tectonic plates
Richter scale
the scale used to measure the magnitude of an earthquake
seismic waves
waves of energy that travel through the earth as a result of an earthquake, volcanic eruption or explosion
subduction zone
where one tectonic plate slips below another
rift zone
a large area of the earth in which tectonic plates are moving away from each other
hotspot
an area of the earth’s surface where the crust is thin and there can be volcanic activity
sheild volcano
a domed volcano with gently sloping sides
Cinder Cone Volcano
Cinder cone volcanoes form when lava erupts from a single opening in the ground. The eruption forms a hill with a crater in the center.
Dome Volcano
a volcano that forms when thick, viscious lava erupts, hardening into a dome shape
Composite Volcano
a composite volcano, is a conical volcano built up by many layers of hardened lava
weathering
the breaking down of bare rock mainly by water cooling and freezing as a result of temperature change
erosion
the wearing away and removal of soil by natural forces such as wind, water and human activity
deposition
the laying down of material carried by rivers, wind, ice and waves.