1
2
100
volcano eruption
Event in which molten rock spews out from the mantle to the surface of Earth as ash, lava, and gases
100
Forecast
A prediction or estimate of future events
200
Atmospheric Conditions
The temperature, wind, clouds, and precipitation in the atmosphere
200
Geologic Forces
Forces resulting from processes occurring within Earth’s crust
300
Catastrophic Events
Extreme weather events such as floods, hurricanes, and tornadoes; classified by the extent and intensity of their impact on the ecosystem
300
Natural Hazard
An event in nature that may have a negative effect
400
Earthquake
Major geological event that occurs when plates shift suddenly and release stored energy; a frequent occurrence along all types of plate boundaries
400
Seismic Waves
Waves of energy that travel through Earth and are the result of an earthquake, volcano, or explosion
500
Flood
A rising body of water that submerges normally dry land
500
underground lava
magma