SOF Lesson 1

What mechanism was used to aid a human being in successfully flying?

• hot-air balloon

• kite

• glider

• propeller-driven airplane

Where did flight by balloon first occur?

• China

• Japan

• France

• United States

What do aerodynamic characteristics affect?

• speed

• motion

• type of aircraft

• aircraft landings

What do you need for an object to fly?

• an engine

• gasoline

• wings

• a force to lift it

What types of force can an airfoil exert?

• either a descending force or a force that pushes
• either a ascending force or a force that pulls
• either a force that pushes or pulls depending on speed
• either a lifting force, or a force that pushes or pulls

Which edge of an airfoil cuts through the air ahead?

• chord
• camber
• leading
• trailing

What did aircraft designers use to test models of new aircraft?

• airfoils
• wind tunnels
• chords
• cambers

How many wing shapes did the Wright brothers test in designing their successful 1902 glider?

• 2
• 20
• 100
• 200

What laws are fundamental to our understanding of flight today?

• Quest’s Laws of Airlift
• Newton’s Laws of Motion
• Paine’s Laws of Force
• Wright’s Laws of Flight

What is sometimes called the Law of Inertia?

• Newton’s first law of motion
• Newton’s second law of motion
• Newton’s third law of motion
• Bernoulli’s principle