Properties of Air
Name three properties of air:
air has mass
air takes up space
air exerts pressure
air has temperature
air can be compressed
air is affected by altitude
What are the four forces of flight?
weight, lift, thurst, and drag.
What is the first law?
A body continues to be at rest or in motion unless an external force is applied to it
What are the 3 key terms associated with flying a plane?
roll, pitch, and yaw
What is the property of air present in this scenario: Zara looks out her window and notices a hot air balloon in the sky.
Air is affected by temperature
What is thrust?
Thrust is the force that moves an object forward, which can be provided by muscles, engines, or gravity
What is the second law?
The greater the mass of a body, the greater the force needed to accelerate it.
What is roll, what does it use, and how does it work?
Roll allows plans to roll left or right. It involves the use of ailerons. One of the ailerons on one wing needs to be raised, and it needs to be lowered in the other wing. The wing with the lowered aileron will rise.
Air is affected by altitude
What is lift?
Lift is a force that acts against weight caused by air moving over and under the wings
What is a third law?
For every action, there is an equal and opposite reaction
What is pitch? What does it use? How does it work?
Pitch allows the plane to go up and down using elevators on the tail of the plane. Lowering elevators will cause the tail to lift, causing the plane to descend. Raising elevators will cause the tail to go down, causing the plane to ascend.
What property of air is evident in this scenario: Lalo feels his ears pop when his airplane takes off into the sky
Air exerts pressure
What is weight?
Weight is the force that pulls everything toward the earth due to gravity
According to Newton, an airplane would continue to move forward and upward if it were not for the opposing forces of....
What is yaw? What does it use? How does it work?
Yaw allows the plane to turn left or right. It uses a rudder attached to the tail of the plane. When the rudder turns left, the plane's nose will point left. When the rudder turns right, the plane's nose will point right.
What is the property of air evident in this scenario: Sheldon goes to a gas station and uses a machine to inflate her car tires.
Air can be compressed
What is drag?
Drag is the force that acts against thrust caused by the resistance of air
According to Newton, large airplanes that have to carry more people need a more powerful engine because...
greater mass, needs more acceleration to get it to move forward.
It needs to use the elevators. The pilot will lower the elevators, causing the tail end of the plane to lift, causing the plane to descend.