Tornadoes are _____________ of violent, swirling winds that usually form along the edge of a _____________. Another name for a tornado is a _____________ cloud. When a tornado hits an area, it usually _____________ everything in its path. Three conditions must be present in order for a tornado to form. First, there must be a large amount of _____________ and _____________ air. There must also be _____________ in the atmosphere to promote upward movement. Finally, in order to form, a tornado must have _____________ fronts. Most tornadoes that form in the United States occur in _____________.
Tornadoes form when strong _____________ tilt _____________ in severe storms. When the two air _____________ meet, _____________ quickly decreases with _____________. This allows the warm, moist air to rise _____________, producing a rotating funnel cloud that is pulled _____________ to the ground. The rain, hail, and cold downdraft of the _____________ pull the funnel cloud to the ground. Scientists measure tornadoes with the _____________ scale.
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Calculate the rate of photosynthesis when the lamp is 50mm away from the beaker and the distance traveled by air bubble is 7mm
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