21 terms

unit II

STUDY
PLAY
tectonic plates
pieces of the earth crust that move around
earthquake
violent movement of the earth
seismograph
a device that is used to detect when an earthquake occurs
epicenter
the point directly above the focus on the earth's surface
richter scale
a device used to measure the magnitude of an earthquake
tsunami
a giant wave caused by an earthquake or volcanic explosion
volcano
a mountain or hill that is formed around a vent where magma and ashes are expelled
ring of fire
an area around the Pacific Ocean where many tectonic plates come together and cause earthquakes and volcanoes
weathering
physical or chemical processes that break rock into smaller pieces
glacier
a large, long-lasting mass of ice
weather
the condition of the atmosphere over a short period of time
climate
the condition of the atmosphere over a long period of time
precipitation
water from the atmosphere such as rain, sleet, or snow
hurricane
a tropical storm that rotates around an eye and occurs in the Atlantic Ocean
cyclone
a tropical storm that rotates around an eye and occurs in Asia
tornado
a powerful, funnel shaped column of spiraling air
tundra
a flat, treeless plain located in high latitudes
permafrost
permanently frozen subsoil underneath the tundra
coniferous
trees with needle leaves
deciduous
trees with broad leaves that lose their leaves in the fall
savanna
a general term for grasslands located in the low latitudes that have a tropical wet and dry climate