The pressure air has when it moves faster than the air around it
What is lower air pressure?
100
Birds have _____ bones that contribute to why they are able to fly.
What is hollow?
100
lift, thrust, drag and weight
What are the forces of flight
100
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.
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 weight.
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 force that moves things forward.
What is propulsion?
200
When you drop two parachutes, but one is crumpled up, the crumpled one falls faster.
What is drag.
200
A force of attraction that every mass in the universe exerts on other masses
What is gravity?
300
What do you learn about air by blowing up a balloon.
That air occupies space.
300
Bernoulli was a scientist who observed birds and came up with the theory that fast moving air has low pressure and slow moving air has high pressure. This is called...
What is Bernoulli's principle?
300
Proppeller or engine
What is two ways a plane can fly.
300
When you leave an unpealed banana out on the counter it browns.
What is oxidation.
300
The force that resists motion of one body over or through another
What is friction?
400
A machine that floats on a cushion of air.
What is a hovercraft
400
Humans can not fly because...
They can not produce enough lift!
400
Anna watched a robin fly accross 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.
400
When you bend both elevators on your paper airplane upwards
Your paper airplane goes up
400
The force exerted on the surface of objects by the weight of air particles
What is air pressure?
500
Name three experiments we did in class that prover Bernoulli's principle exists.
1) Popcans- blow in between, they come together
2)tunnel -caves in
3)tent- sides collapse
4) blow dryer and balloon
500
Both insects and birds have adaptations for flight. Name a similarity between the two.
They both have wings which are used to create lift.
500
Upward force which acts against the force of gravity
What is lift
500
Pumping air into a bicycle tire (what is happening to the air?)