Air & Bernoulli
The number of basic forces that act on a flying object
What is four?
True or false, airplane wings are designed after bird wings?
What is true?
What are Helicopter wings called?
Rotor blades
Upward motion needed to get an object into the air.
What is lift.
IN ALPHABETICAL ORDER, these are the four forces acting on a flying object
What are drag, gravity, lift, and thrust? OR What are drag, lift, thrust, and weight?
Birds have smaller hearts to pump less oxygen to their muscles, true or false?
What is false?
The ability to take off and land this way is part of a helicopter's value
What is vertically?
Which of the force(s) effecting a flying object are due to natural phenomena?
What are gravity and drag.
Some birds need to run before they can achieve lift, true of false.
What is true?
This is similar to a helicopter, but made of paper
What is a rotocopter?
Air always flows from ____ to ____ _____.
What is high to low pressure.
Bernoulli's discovery
What is "As air moves FASTER, it has LESS pressure"
This bird's chest muscles allow it to what?
What is flap it's wings very hard and fast?
These three are needed in hot air balloons:
What are envelope, burner, and basket?
Lift and thrust forces in a paper airplane are caused by this.
What is a throw or toss.
When a plane flies, air moves ? under the wing than over it.
What is "slower?"
These adjust drag on a plane
What are wing flaps?
This a word for "air-filled", which describes a bird's bones
What is hollow?
When hot air is heated and becomes less dense and floats on top of colder air, this is called:
What is buoyancy?
What are flat bottoms and curved tips.