Properties of Air
Birds and Insects
Forces of Flight
What is happening?
Definitions
100
The property of air that is demonstrated by hot air molecules expanding, and cold air molecules contracting.
What is air has temperature?
100
Birds have _____ bones that contribute to why they are able to fly.
What is hollow?
100
This downward force on an aircraft is caused by gravity.
What is weight?
100
When you pump air into a bicycle tire.
What is compressing air?
100
An invisible mixture of gases which make up the earths atmosphere.
What is air?
200
What you discover if you were to blow up one balloon and tie it on one side of a meter stick, while the other side has an uninflated balloon.
What is that air has mass?
200
It is shaped to allow fast moving air to move on top of it and slower moving air on the bottom.
What is a birds wing?
200
The upward force that is created by the movement of air above and below a wing.
What is lift?
200
When air flows faster on the upper surface (less pressure) than the lower surface of an airfoil (more pressure), creating lift.
What is Bernoulli's Principle?
200
The science of moving through air.
What is aerodynamics?
300
What property do you learn about air by lifting up something with a balloon?
What is air exerts pressure?
300
The purpose of a bird's strong chest muscles.
What is stronger muscles means that the bird can flap it's wings more often?
300
The force that moves a plane forward through the air. This may be created by a propeller or jet engine.
What is thrust?
300
When manufacturers shape an object such as a vehicle so it will move faster through the air.
What is streamlining?
300
Resistance or friction that acts to slow down an object as it moves through air.
What is air resistance?
400
The "tissue in a cup" experiment demonstrated this property of air. The tissue did not get wet because...
What is air takes up space?
400
Both insects and birds have adaptations for flight. Name a similarity between the two.
What is they both have wings which are used to create lift?
400
The air resistance that tends to slow the forward movement of an airplane.
What is drag?
400
When you blow air between two strips of paper. (Hint: use high and low pressure in your answer)
What is: faster moving air in between the papers, creating lower pressure, slower moving air outside the papers, creating higher pressure
400
A streamlined shape, usually with a rounded leading edge and a sharp trailing edge.
What is an airfoil?
500
The property of air that is demonstrated when air is blown around a bottle and the flame of a candle on the other side goes out.
What is air in motion behaves like a fluid?
500
Name two special adaptations that insects have for flight.
What are: light weight and small, may have one or two sets of wings, strong pectoral muscles that allow them to move wings, wings shaped like an airfoil, aerodynamic shape, wings are very thin with a network of veins.
500
When all four forces are equal, this will happen.
What is hovering?
500
An aircraft descends and slows down.
What is: drag and weight are increasing, lift and thrust are decreasing?
500
The amount of matter in an object.
What is mass?
M
e
n
u