Hot air balloons

Hot air Balloons have a Pilot and the Pilot can control the Hot air Balloon. The Balloonists do not fly at night. The people that are on the ground they follow the Hot air Balloon. Many are used for sight-seeing and the fun of flying. Before the Hot air Balloon flies they put hot air inside. The first flight was in 1783 in france. There are hot air inside so the Hot air Balloon can fly. It is 70 kilograms and it is 154 pounds. The balloon is called a envelope. The rope is called cables. Hot  air  Balloons  are  large  flying  machines  that  lift  people  off  the  ground. People  have  been  flying  in  Hot  air  Balloon  for  more  then  two  hundred  years. To  keep  flying  in  the  air  in  the  envelope  must  stay  hot. The  burner  heats  the  air. The  envelope  and  the  basket  are  driven  in  a  truck  to  take-off  field. A  team  of  people  unload  the  balloon  and  get  it  ready  to  fly. People  hold  the  bottom  of  the  envelope  for  it  to  stay  open. Hot  air  Balloons  go  where  the  wind  pushes  them. Pilots  try  to  take  the  balloon  to  a  hight  where  they  can  find  a  wind  that  takes  them  where  they  want  to  go. Balloons  might  get  caught  up  in  power  lines. It  is  difficult  to  find   a  place  to  land. As  hot  air  escapes  through  the   vent  cool  air  is  sucked  in  through  the  bottom  of  the  envelope. The  cool  air  makes  the  balloon  heavier  and  it  starts  to  lose  height.