Hurricanes and tornadoes
how does a tornado form
1. Wind moves in 2 directions. 2. Spinning air is turned into a virticle position 3. A spinning column of air forms a funnle. 4. Becomes a tornado when a funnel touches the ground.
list the five stages of a hurricane
1. tropical wave 2. tropical depression 3. tropical disturbance 4. tropical storm 5. hurricane
wind speeds for tropical storm
39 mph
what is a thunderstorm
a storm with lighting and thunder produced by a cumulobus cloud
what is the main difference between the us scale and the austtrainan scale
australian scale has only 2-5 and us has 1-5
eye of the hurricane
core of warm, calm air with low pressure at the center of the hurricane
in the indian ocean a hurricane is called a
cyclone
what scale is used to measure the intensity of hurrcanes in australia
enhanced saffer simpson scale
why dont hurricanes form on the equator
hurricane need the coriolis effects to start spinning.
hail forms when........freezes
rain
what scale is used to measure hurrancanes.
saffer simpson scale
how are hurricanes and tornadoes similar
strong winds, warnings and watches, cause property damage and can kill people
hurricane eye wall
surrounds the eye and contains most violent wind and rain
what is the fujita scale
the scale used to measure a the stength of a tornado.
how are tornadoes different from hurricanes
tornado - forms over land, fujita scale, no precip just wind hurricane - forms over water, saffir-simpson scale,usually has rain or hail
more layers of ice are added to hail when strong .........are formed in cumulonimbus clouds
wind
To determine the intensity of a tornado, what factor is analyzed.
wind speed
tropical depression
wind speed less than 38 mph
tropical storm
wind speeds between 39 and 73 mph
hurricane
wind speeds of at least 74 mph