what causes tornadoes

hot and cold combind

"Tornadoes are usually the extreme result of a very large thunderstorm called a supercell. During the storm cold air and warm air combine. The cold air goes drops as the warm air rises. The warm air eventually twists into a spiral and forms a funnel cloud. The sky turns a very dark green color and the tornado begins its destruction."

they are form in a large storm. its called a supercell. when the warm air meets the cold air the warm riss the cold drops


i larned that tornadoes can happen at any ponit in time

"How Are Tornadoes Formed."

Step 1: Like all winds and storms, tornadoes begin when the sun heats up the surface of the land. As the warm, less heavy air begins to rise, it meets the colder, heavier air above it. Note that wind shears make it even easier to set them off. A wind shear is when two winds at different levels and speeds above the ground blow together in a location.

Step 2: The faster moving air begins to spin and roll over the slower wind. As it rolls on, it gathers pace and grow in size.

Step 3: At this stage, it is an invisible, horizontal wind spinning and rolling like a cylinder. As the winds continue to build up, stronger and more powerful warm air forces the spinning winds vertically upward, causing an updraft.

Step 4: With more warm air rising, the spinning air encounters more updraft. The winds spin faster, vertically upwards, and gains more momentum.

Step 5: At this stage, the spinning winds, creates a vortex and the the wind has enough energy to fuel itself.

Step 6: The tornado is fully formed now and moving in the direction of the thunderstorm winds. When the pointed part of the tornado touched the ground from the cloud, it is often referred to as 'touch down' As it moves it rips off things along its patch.

tornadoes all start with with the same then

work sited

"How Are Tornadoes Formed." Universe Today. N.p., 25 Aug. 2010. Web. 29 May 2015.