What are dust devils?
Dust devils are like mini tornadoes. They are caused when very hot air near the ground rises quickly through cooler air. The funnel of air begins to spin and whips up dust, leaves, and other objects in its path. Dust devils are usually small and might be no wider than your outstretched arms. These whirlwinds usually occur during hot, dry weather or in hot, dry places such as deserts. Dust devils occur on Mars, too. Other names for dust devils include dancing devils, whirlies, and willy willys.
