Show:
Forces
Parachutes and Hot Air Balloons
Space and flight
Theory of Flight
Parts of a Plane
100

Name the four forces of flight

Lift Thrust Drag Weight

100
Most parachutes are made of?
Nylon.
100
Describe what it means to be streamlined
To adapt the shape of an object or animal/person, so that they have less drag when moving against air resistance.
100
Which is lighter, hot air or cold air?
Hot air.
100
The rudder is a flap located on the plane's vertical stabilizer, what is the function of the rudder?
It allows the plane to change directions from right to left.
200

Describe the forces of lift and weight.

Lift is the force moving something upward, while weight is the force pulling something towards the earth.

200
Hot air balloons achieve lift because...
Hot air rises.
200
Name a similarity between aircrafts and spacecrafts
Both require fuel to fly, both are pressurized so that people can breathe inside, both can carry people, both are expensive to build, both are a fast form of transportation, etc.
200
Aircraft wings must be designed so that air moves... (discuss the speed of air)
More quickly across the top of the wing (to create a lower air pressure)
200
The main function of the fuselage is...
To hold the passengers/cargo and to anchor the plane
300
Any falling object has two main forces acting on it. These forces are?
1) Gravity 2) Air Resistance
300
Why does hot air rise?
Hot air rises because it is less dense and therefore lighter than cold air; when air is heated the molecules move apart from each other.
300
Name a difference between aircrafts and spacecrafts
Both require different types of fuel to fly, spacecrafts require a special launching site, many spacecrafts are uncrewed, airplanes have windows for viewing, etc.
300
The three basic movements of an airplane are?
Pitch, roll, and yaw.
300
The horizontal stabilizer is on the airplane's tail and looks like a miniature wing, what is its function?
To keep the airplane flying forward on an even flight path.
400

What causes Drag?

Friction


400
What is the purpose of making a hole in the canopy of a parachute?
To release air pressure and to keep the parachute from wobbling.
400
Give an example of a way that an animal can become streamlined
Geese lift their undercarriage up and point their necks forward, etc.
400

Bernoulli's Principle best explains flight and lift because it explains that... (discuss air pressure)

an increase in the speed of air occurs simultaneously with a decrease in air pressure

400
Ailerons are flaps on a plane's wings, what are their function?
To control roll (helps the plane turn).
500
Describe the forces of thrust and drag.
Thrust is the force moving something forward, while drag is the force pulling something back.
500
What 2 variables must be kept constant (the same) to ensure a fair parachute test?
Weight and height.
500

what is escape velocity?

The minimum speed that is required for an object to free itself from the gravitational force exerted by an object

500

What is Mach 1?

the speed of sound in air, approx. 760mph

500
Elevators are flaps located on the plane's horizontal stabilizers, what is their function?
To control the pitch of the plane.