1. Tornadoes and How They Affect the Earth
By: Robyn Hsieh and Justin Preciado

2. Outline What Is a Tornado Tornado Damages How Tornadoes are made
How Tornadoes Affect the Air
Where Do Tornadoes Occur
References
Credits

3. What Is a Tornado
A Tornado is a natural disaster. The natural ingredients that help make up deadly twisters.
A tornado is a powerful storm, which is created when moist, warm air gets trapped beneath a stable layer of cold air.

4. Tornado Damages
Twisters can cause thousands to millions of dollars in damage.
The Oklahoma City tornado on May 3, 1999, was one of the most expensive tornadoes in U.S history.
Once a tornado strikes, the severity can vary; the land that is destroyed is often hard to restore.

5. How Tornadoes Are Made
Tornadoes are created when moist, warm air gets trapped beneath a stable layer of cold air.
Tornadoes are formed when a rotating column of air extends from the base of a thunderstorm cloud to the ground.

6. How Tornadoes affect Air
The most fundamental thing you have to understand is that heavier gases weigh more than lighter gases.
Different chemical elements, as you know, have different atomic weights.
Those which form gases (like nitrogen, oxygen, etc.) often combine two atoms at a time to form a gaseous molecule - like N2 (two nitrogen atoms) or O2 (two oxygen atoms).

7. Where Do Tornadoes Occur
Tornadoes have hit all fifty states, but this does not occur often.
Most tornadoes occur in what is know to many of us as “Tornado Alley”.
Many of those states within the alley thrive on those weather conditions during spring and summer.

8. References

9. Credits
This presentation was made by: Robyn Hsieh and Justin Preciado but most of the work was done by Justin. Robyn did the typing also!
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