Properties of Air
The pressure air has when it moves faster than the air around it
What is lower air pressure?
Birds have _____ bones that contribute to why they are able to fly.
What is hollow?
lift, weight, drag, thrust
When you blow between two pop cans they move together.
What is: faster air equals lower air pressure, so the surrounding air pushes the cans together.
An invisible mixture of gases which make up the earth's atmosphere.
What is air?
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 weight.
It is shaped to allow fast moving air to move on top of it and slower moving air on the bottom.
What is an airfoil?
The force that moves things forward.
What is thrust?
When you drop two parachutes, but one is crumpled up, the crumpled one falls faster.
What is drag/streamlining/aerodynamics.
The most abundant gas in the atmosphere
What do you learn about air by blowing up a balloon.
That air occupies space.
A scientist observed birds and came up with the theory that fast moving air has low pressure and slow moving air has high pressure. What is this called?
What is Bernoulli's principle?
What does thrust have to overcome?
drag
When you leave an unpeeled banana out on the counter it browns.
What is oxidation.
No fixed shape, flows easily
What is a fluid?
What do you learn about air pushing in a syringe with the end closed off?
What is air is compressible
Humans can not fly because...
They can not produce enough lift!
Anna watched a robin fly across her yard. What observation could she make about the bird's wings?
Wings are curved outward on top and are flat or slightly curved inward on the bottom.
When you bend both elevators on your paper airplane upwards
You increase drag which does not allow it to go as fast or as far
the part of an experiment you keep the same?
What is controlled/constant variable?
Name two experiments we did in class that prove Bernoulli's principle exists.
Answers may vary
Both insects and birds have adaptations for flight. Name a similarity between the two.
They both have wings which are used to create lift.
Upward force which acts against the force of gravity
What is lift
Pumping air into a bicycle tire (what is happening to the air?)
What is compressing air
The part of an experiment you change on purpose
What is manipulated variable?