Unit 2 Exam Study Guide

flapped its wings like a bird

was powered by steam engines

used jet propulsion

was designed for underwater travel

To conduct a test flight of an aircraft without effects of weather

To test scale models of airfoils and aircraft

To study why an airplane crashes or malfunctions

To correct any human errors made during manufacturing

Scientific concepts related to flight

Early flight techniques

Inspiration for human flight

Earliest designs of airplanes

Buoyancy

Density

Gravity

Weight

The curve of the wing

The straight line that connects the leading edge to the trailing edge of the wing

The distance between the top and bottom of the wing

The symmetry of the wing

It lowers the weight of the basket by warming the balloon.

It warms the air just outside the balloon causing it to rise.

It warms passengers at high altitudes.

It heats the air inside the balloon causing it to rise.

Beak

Wings

Head

Tail

evaporates

starts to cool

becomes less dense

becomes heavier

An airplane’s wing is an obstacle to the oncoming air. As the air meets the wing, its path widens

The speed of the air is faster as it hits the top of the wing causing an increase in pressure and creating lift. This permits flight of the glider.

Air slows down as it hits the top of the wing, which increases pressure and creates drag. This permits the flight of the glider.

Air moves faster over the top of the wing than air moving below the wing. This creates an area of low pressure on top of the wing, which lifts the glider up.

As air inside the balloon gets warmer, the density of the air in the balloon decreases, causing it to rise.

It is a measure of how much air there is surrounding the balloon to help support it.

It is a measure of how much drag there is surrounding the balloon to help stabilize it.

Density of cold air is less than hot air. The cold air presses against the balloon on the outside, pushing it up.