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science Vocab
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17
Astronomy
6th Grade
04/27/2011

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Term
lift
Definition
upward force caused by the flow of air above and below an airfoil
Term
propeller
Definition
device made of blades that spin around a shaft, used to produce thrust fir an airplane
Term
rocket
Definition
engine that burns fuel in a chamber with an open end making hot gases that produce thrust whten they rush out of the chamber
Term
rotor
Definition
device made of blades that spin around a shaft, used 2 produce lift fir a helicopter
Term
stability
Definition
ability of an aircraft to stay on cource
Term
thrust
Definition
force that moves an object forward
Term
wieght
Definition
force caused by gravity pulling down on an object
Term
drag
Definition
force acting on a moving object in the oppistie direction of the objects movement slowing the object down
Term
bernoouliis principle
Definition
scinitific idea that states that the faster air flows the less pressure it pushes with
Term
aerodynamics
Definition
study of how air pushes and pulls on objects
Term
aeronautics
Definition
science of flight
Term
glider
Definition
aircraft without an enigine that is carried along by air currents
Term
gravity
Definition
force that pulls objects towards earth
Term
helicopter
Definition
aircraft without wings that is liftes and kept in the air by rotors
Term
airfoil
Definition
object such as wing whose shape and tilt or angle help lift an airraft
Term
streamlined
Definition
streek smooth shape to have as little air resistence as possible
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