Matching Pairs Natural disasters unit 4Online version vocabulary unit 4 by Javi Alejandra 1 Hurricanes happen in the... 2 A tornado is... 3 A drought ocurrs when... 4 A tsunami... 5 Blizzard... 6 Earthquakes are... violent shakings of the Earth's crust that may cause destruction to buildings. is a series of enormous waves created by an underwater disturbance usually associated with earthquakes occurring below or near the ocean is a severe snowstorm with high winds and low visibility. a windstorm occurring over land. Atlantic Ocean, whereas typhoons happen in the Pacific. there is a long period with little or no rain.