Hot air balloons were used for reconnaissance during the civil war.
Hot air balloons float because hot air displaces cool air in the atmosphere
Hot Air Balloons work because of the hot air.The hot air rising stays in the balloon and carries it upward.
People think that hot air balloons where made for battles.
hot air rises
Hot air balloons have a device at the top called a parachute to let the hot air out, controlling their decent.
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The first use of hot air balloons was in the American Civil War for surveillance of troop movements.
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telegraphs hot air balloons spies/couriers telegraphs hot air balloons spies/couriers
Hot air balloons
The Civil war
To spy on the enemy
Hot air balloons
Hot air balloons
the civil war of which country?
They were used for reconnaissance of troops in the civil war. They were the first type of "spy" from the air.
Hot air is used for hot air balloons.