hurricane
tornado
volcano
earthquake
100

how long do hurricanes last normally 

1 week

100

what is a tornado

a tornado is a violent rotating column of air extending from a thunderstorm to the ground 

100

how are volcanos formed

volcanos are formed when there is an opening in the earths crust which exposes hot melted rock and gas that is stored beneath the earth

100

what is a earthquake

earthquakes are when the earths surface shakes or rolls or has a sudden shock 

200

where do hurricanes form

they form above water

200

how do people measure tornados

they use the fujita scale to find the severity of the tornado on a scale from gale tornado with winds of 64 - 112 km to a incredible tornado with wind speeds of 420 - 511 km

200

what are volcanos responsible for 

volcanos are responsible for the formation of igneous rock and a igneous rock is formed by the cooling and solidifying of molten materials 

200

how long do earthquakes normally last

earthquakes normally last a minute

300

how big can hurricanes get

1000 kilometers 

300

what environment do tornados form in

tornados form in hot and humid environments 

300

what is the aftermath of a earthquake

the aftermath of a earthquake can be devastating due to loss of life or structure damage

400

how do hurricanes form

they form over ocean water when winds come together to force air upward

400

how do tornados form

tornados form when humid air rises and colder air rushes underneath it

400

how are earthquakes formed

earthquakes are formed when the edges of tectonic plates brush against each other which cause huge rock shifts with great force that cause a earthquake

500

what are storm surges

storm surges cause sea water to rise due to pressure changes and wind in the storm

500

where are tornados most common 

tornados are most common in the united states and canada