Both. In the bottom few thousand feet of a tornado air is drawn inward. The air is then released upward and then finally outward at the top of the storm.
No. Tornadoes can be very destructive, but they do not cause air pollution.
Tornadoes demonstrate the enormous amount of energy that Earth's atmosphere has the potential to release, and that even something as seemingly benign as air can turn violent.
Tornadoes are made of air necause they are a weather phenomenon and occur within Earth's atmosphere, which is made of air.
Tornadoes most often form where cool dry air and warm moist air collide. This does not directly produce tornadoes but rather produces the thunderstorms that, given a few other factors, can sometimes produce tornadoes. Additionally, such a meeting of air masses is not absolutely necessary for tornadoes to form.
Guam has been the site of tornadoes before. Tornadoes can form anywhere cold and warm air collide, causing an imbalance in air pressure.
Tornadoes form most often when warm moist air collides either cool air or dry air. This produces thunderstorms. Other conditions are needed for those storms to produce tornadoes.
Antarctica is too cold for tornadoes to form. Tornadoes need energy from warm air.
No. The common description of tornadoes forming from a collision of hot and cold air is a gross oversimplification. The collision of air masses often produces the storms that spawn tornadoes, but is not a direct cause of the tornadoes themselves. The storms do not necessarily arise from such a collision either. However, the presence of hot, humid air is one of the most favorable factors for tornadoes to form as that is when the air holds the most latent energy.
Tornadoes themselves are made of violently moving air and form from interactions of various moving parcels of air in and around a thunderstorm.
Tornadoes often form when a cool air mass and a dry air mass collide with a warm, moist air mass. This collision produces strong thunderstorms. Under the right conditions these thunderstorms can produce tornadoes.
In this oversimplified scenario, the cold dry air meets warm, moist air. However, this is not quite the case. The collision of these two air masses is not what directly causes tornadoes. Rather, this collison produces thunderstorms, which can in turn produce tornadoes. Such a collision is not always necessary for tornadoes to form either.
Tornadoes are often associate with a collision between cool, dry air and warm, moist air. This however is not the direct cause of tornadoes. Such collisions produce thunderstorms, which, given the right conditions, can produce tornadoes.