Quiz 7 Buoyant & Mechanical Flight

There are two types of flying machines, aerodynamic machines, and aerostatic machines.

• True

• False

Buoyancy is an upward force exerted by a fluid that opposes the drag of a partially or fully immersed object

• True

• False

An airship is a type of aerostat or lighter-than-air aircraft. Aerostats gain their lift from a lifting gas that is _______ dense than the surrounding air.

• more

• less

• equal

• zero

For a neutrally buoyant balloon, the lift is __________ the weight.

• more

• less

• equal

• zero

Which is the correct combination of basic parts of a hot air balloon.

• Burner, Flaps, Envelope

• Basket, Gear, Burner

• Basket, Envelope, Rotor

• Basket, Parachute valve, Burner

Moon and Earth are natural satellite

• True

• False

The balance between lift and gravity makes the satellite orbits the Earth?

• True

• False

How does satellite get their energy?

• Self-powered generator

• Lithium-ion batteries

• Fuel powered generator

• Solar panel energy

If the rotor of the helicopter is being spun clockwise by the engine, the helicopter itself will begin to spin ________

• At the same place

• Clockwise

• Counter-clockwise

• Up and down

Which Newton’s Law applied into the tail rotor design of a helicopter?

• Newton’s 0^th Law

• Newton’s 1^st Law

• Newton’s 2^nd Law

• Newton’s 3^rd Law