Fluid Properties
A fluid is anything that
Flows
Is hot air more dense or less dense?
Less dense
Name all 4 forces of flight
Gravity, lift, thrust, and drag
What does Bernoullis Principle say?
Fast air = low pressure
Slow air = high pressure
What was the name of the guy in the videos showing us demonstrations (ex: tea bag). Double points.
Jared/Jarett
Fluids do what when heated
Rise
What happens when a hot air balloon starts to take flight?
The warm air rises and the particles spread out (less dense).
Thrust
What does aerodynamic mean?
Something that has a shape which reduces drag
How many breathes does it take to fill up a huge plastic bag?
Only 1 if you use Bernoulli's principle
Is air a gas or a liquid?
BOTH. Air flows.
Give an example of something lighter than air (not a hot air balloon)
Blimp
Helium balloons
What force pulls airplanes to the center of the Earth?
Gravity
What is the best shape for a wing for double points?
Airfoil (curved on top, straight on bottom)
How many school days until winter break?
14
Fluids expand when heated and "what" when cooled
"contract"
Is cold air more dense or less dense?
More dense
What force is the opposite of gravity?
Lift
Why does the ping pong ball fall faster than the piece of paper
Air resistance
Guess Ms. Owens's favourite food
Sushi
Name a property of fluids that hasn't been mentioned
Fluids take up space
Fluids exert pressure
Fluids have weight
Fluids can be compressed
YOU GOT LUCKY! FREE POINTS
Nice
What force pushes against the plane (backwards)
Drag
Thrust must overcome "what force" and lift must overcome "what force"
Drag and gravity
If your team can tell me what 5x6 is you get free 500 points.
30