air and aerodynamics Flashcards
what is propulsion
the action of driving or pushing forward
why does a balloon exert pressure
because the are pressure inside of the balloon is the same as the air pressure outside of the balloon
what would happen if the air pressure on the inside of the balloon was greater then the air pressure on the outside of the balloon
the balloon would burst
what would happen if the air pressure on the outside of the balloon was greater then the air pressure inside of the balloon
the balloon would collapse
air also has…and…
mass
density
what is mass
mass is amount of of matter in an object
what is density
how tightly or how loosely packed the molecules inside a object is
when you are under water is there more air pressure or low air pressure
more air pressure
when you are on top of a mountain is there high or low air pressure
low air pressure
what is the meaning of compressed
means squeezed together
what is Bernoulli’s principle
states that as speed of a moving fluid increases, the pressure within the fluid decreases
what are the four forces of flight
lift, drag, thrust, gravity
