bernoulli used ___ flowing through ___ for his experiments
Water flowing through pipes
100
Some birds like hawks are able to ___
Soar
100
If a planes lift is greater than its mass it will get a higher _______
Alltitude
100
To move forward you must create _____
Thrust, thrust can be made with an engine
200
name one of the gases that makes up air?
Nitrogen,oxygen,argon or trace gasses
200
Bernoulli's principle was key in the development of _____ ___
Human flight
200
Feathers give birds a _______ shape
Streamlined
200
What are the 4 forces
Lift,drag,thrust and gravity
200
Yaw controls
Side to side movement
300
How many gasses make up air?
4
300
Aircraft wings are designed so that
Air flows faster over the wing than it does under
300
____ ________ on birds give them the ability to steer in flight like the rudder on an air plane
Tail feathers
300
Thrust opposes ____
Gravity opposes ____
Thrust opposes Drag
Gravity opposes Lift
300
Are the propellers on a helicopter curved?
Yes because they are also air foils
400
Can air rust objects?
True air can rust when iron reacts with oxygen
400
If the speed increases the pressure?
Decreases
400
The hollow bones of a bird help reduce _____
Weight
400
If the 4 forces are balance the plane can _____
Hover
400
What are the manoeuvres of a plane?
Yaw,pitch and roll
500
Is this true? Air has traces of water in it.
True water is in the trace gases
500
Bernoulli's principle states that?
The state of a moving object increases, the pressure within a moving object decreases
500
___ ____ in the birds thorax and abdomen fill up with air and provide the bird with air during flight
Air sacs
500
How do the forces work together
without thrust a plane couldn't move,
without gravity a plane couldn't come down,
without drag a plane couldn't stop,
without lift a plane couldn't go up.
500
What is the angle of attack?
The difference between where the wing is pointed and the direction of the air flowing over the wing is the angle of attack