1) When were hot air balloons created a) September 19 1781 b) November 18 1752 c) September 19 1783 d) October 7th 1984 e) January 17th 1823 2) How is Bernoulli's Principle shown in hot air balloons a) They fly b) They use hot air and ascend c) because Bernoulli's Principle says that the pressure decreases inside a stream of flowing air. d) because Bernoulli's principle has to do with flight and lift 3) How do hot air balloons descend  a) The hot air is let in through the vent which helps it desend b) There is a vent at the top of the balloon which is opened to let in cool air to help the balloon descend. c) idk d) they pop open the ballon 4) How do hot air balloons achieve lift a) The hot air on the out side of the balloon helps it achieve lift b) heating the air inside the balloon with the burner, it becomes lighter than the cooler air on the outside. c) The cold air on the inside of the balloon balances out with the hot air on the outside and helps it achieve lift d) Sand bags are released which lets the balloon float into the air 5) Do hot air balloon pilots control where they fly a) No, they use the speed and direction of the wind. b) yes they have a cock pit that controls it

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