While the racers follow a set course outlined by turning points, the trick is to identify and then use rising thermal currents to get to elevations high enough to allow them to glide the distances to their destinations.
12.
Common applications include gas scrubbing applications ( e . g ., flue-gas desulfurization where the smaller droplets often offer superior performance ) and fire fighting ( where the mix of droplet densities allow spray penetration through strong thermal currents ).
13.
On the other hand, biologists estimate that there are as many as 56 condors now riding thermal currents over Southern California and adjacent areas _ a remarkable recovery for the huge carrion eater that became extinct in the wild in 1987.
14.
Modern advances in turbine technology may eventually see large amounts of power generated from the ocean, especially tidal currents using the tidal stream designs but also from the major thermal current systems such as the Gulf Stream, which is covered by the more general term marine current power.
15.
The aircraft reached an altitude of no more than 500 feet when the airspeed suddenly dropped because of thermal currents it encountered during the climb out, causing the airplane to stall before traveling 5 km ( 3.1 mi ) away, crash and catch fire, killing all 156 passengers and 10 crew on board.
