Page 58 - (DK) Danger! Open with Extreme Caution!
P. 58

MIGHTY WIND


                  CARNIVAL





                             Come one, come all! The carnival
                             has blown into town. There’s
                             stormy weather ahead, so batten
                             down the hatches. Step right up
                             and feel the power of the mightiest
                             winds: hurricanes, tornadoes,                            Hurricane
                             and other deadly windstorms.                      This intense rotating storm is born over warm
                             The stories behind these storms            ocean waters. Bands of tall rain clouds form and grow
                                                                           around a low-pressure system. Wild winds begin to
                             will blow you away.                         swirl around the calm central zone, called the eye.
                                                                          Hurricanes can be up to 400 miles (650 km)
            Twister            Tornado                                  to 200 mph (320 km/h) can rage for days.
                                                                          in width, and their destructive winds of up
                               This twisty storm forms in warm, moist
                               air ahead of a cold front. The collision
                                between the high- and low-pressure
                                                                           Wild
                                systems causes the winds to circulate
                                around each other in a tight spiral.
                                                                    Waterspout
                                The tornado appears as a spinning,
                                funnel-shaped cloud. When
                                the twister touches down
                                 on the ground, its winds can                                                 Katrina
                                 fling cars, cows, trees, and
          Tornado                and reduce buildings to rubble.
                                 people through the air

                                     Waterspout
                                     A weak type of
                                     tornado that forms over
                                     water, a waterspout is
                                     a spinning column of
                                     tiny water droplets
                                     stretching from
                                     a cloud to the sea.
                                     The spout leaves
                  Going up!          and waves as it
                                     behind bubbles
                                     zips across the
                                     ocean. Waterspouts
                                     are hazardous to swimmers,
                                     boats, and small aircraft.
                                                                          Fujita scale
                                                                          Tornado winds can spin at 318 mph (512 km/h)—
                                                                          almost half the speed of sound. The Fujita scale
                                                                          is used to measure their destructive power by
                                                                          studying the aftermath of a twister. It runs from
                                                                          FO (little or no damage to buildings and vegetation)
                                                                          to F5 (everything is as flat as a pancake).






      58
                                           (c) 2011 Dorling Kindersley. All Rights Reserved.
   53   54   55   56   57   58   59   60   61   62   63