Vocabulary
Flight
What is the action or process of flying through the air?
Blowing up a balloon makes it expand
What is air takes up space
(properties of air) the higher you are, the lower the air pressure
what is air is affected by altitude
makes it easier to achieve lift
what is lightweight
Air is a fluid
Bernoulli's Principle
What is fast moving air creates low pressure while slow moving air creates high pressure
an empty balloon weighs less than a blown up balloon
What is air has weight/mass
force that propels the plane forward
what is thrust (or propulsion)
makes the birds lighter
what is light bones
False - the weight is overcome by lift + the thrust overcomes the drag
Newton's Theory for Lift
when air heats up, the particles move faster
what is air is affected by heat
force that acts on an object in the opposite direction that it's moving
what is drag
allows for flapping of wings
what is strong flight muscles
Rockets carry people into space.
False - rockets are the engines - they will detach and fall back to earth. Spacecrafts are what carry people to space.
Gravity
force of attraction that pulls together all matter
air exerts the same amount of force in al directions on an object
what is air exerts pressure
force that sends an aircraft in the air and holds it there
what is lift
creates force needed for lift
what are wings
Drag is never good.
False - it is important when we need to slow objects down as they are falling. Ex. for skydivers
Parachute
what is a device used to slow down an object that is falling towards the ground
air particles have lots of space between them so they can be squeezed together
what is air can be compressed
force of gravity that acts in a downwards direction
what is weight
reduces drag
what is a streamlined body
Parachutes increase air resistance.
True - this slows us down by increasing drag and countering the force of gravity