Online Geography Resources |
Tornadoes - What and Why? |
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Starter |
MYP Aims and Objectives |
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Task One |
Watch the following video clip. What conditions are necessary for the formation of a tornado? |
![]() | Activities |
Stage 1 |
Stage 2 |
Stage 3 |
Stage 4 |
Stage 5 |
Stage 6 |
Stage 7 |
Stage 8 |
Stage 9 |
Animated guide: Tornadoes |
A visible cone or funnel drops out of the cloud. |
When the warm, moist air meets cold dry air, it explodes upwards, puncturing the layer above. A thunder cloud may begin to build. |
A tornado can last from several seconds to more than an hour and may travel tens of kilometres. |
Intense or unseasonable heat. |
A storm quickly develops - there may be rain, thunder and lightening. |
The Fujita damage scale is used to estimate the wind speed from the damage caused. |
Upwards movement of air becomes very rapid. Winds from different directions cause it to rotate. |
The vortex of wind reaches the ground. They vary in size and shape and can be hundreds of metres wide. |
As the ground temperature increases, moist air heats and starts to rise. |
Task Two |
Cut out the nine images that represent the different stages of tornado development. Glue them into your exercise book in the correct order leaving enough space to write the correct statement from above by the image. |
Task Three |
Cut out the following two maps out from the resource sheet, stick them into your exercise book and then answer these questions:
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Regions of the world with increased likelihood of experiencing tornadoes |
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A map of the frequency of F3 and greater intensity tornadoes by area. The darker colours highlight the area typically known as Tornado Alley. |
Task Four |
Cut out the following map out from the resource sheet, stick it into your exercise book and then answer these questions:
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World Tornadoes and Agricultural Areas |
Task Five |
Cut out the following graph out from the resource sheet, stick it into your exercise book and then answer these questions, in full sentences:
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US Tornado Deaths 1950 - 2008 |
![]() | Review |
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