Question

how does a hot air balloon control its direction in flight? (2.b)
question 9 (1 point)
a hot air balloon rises when (2.b)
question 10 (1 point)
what were some of da vincis lasting impacts on aviation? select three correct answers. (2.a)

Explanation:

For the first question, hot - air balloons use wind at different altitudes to change direction as they have no direct steering mechanism like an airplane. For the second question, a hot - air balloon rises because hot air is less dense than cold air, and the less dense air inside the balloon causes it to be lifted off the ground. For the third question, da Vinci developed the idea of the parachute and the "air screw" which had impacts on aviation; painting the Mona Lisa has no relation to aviation and the inclinometer is not directly related to aviation in the context of his contributions.

Answer:

Question 8: A. By using the wind at various altitudes to fly to desired locations
Question 9: B. the less dense air inside the balloon causes the balloon to be lifted off the ground
Question 10: A. Developed the idea of the parachute, D. Developed the "air screw"