Birds 2 Flashcards
1
Q
What does Newton’s Law and Bernoulli’s principal concern?
A
Physics & flight.
2
Q
What are feathers used for?
A
- Flight
- Insulation
- Waterproofing
- Display
- Camouflage
- Eye and nostril protection.
3
Q
Describe adaptions for flight.
A
- Pneumatic bones
- Feathers attached on hand (primaries) and arm (secondaries)
- Fused carpals and reduced digits
- Large flight muscles attached to keel
4
Q
How do birds minimise drag during flight?
A
- Streamlining - lack of external ears, feet tucked in, feathers, wing shape
- Flying in the wake of other birds e.g. Birds
5
Q
What is the purpose of primary and secondary feathers?
A
- Primary = propulsion
* Secondary = lift.
6
Q
What is the wing loading?
A
Mass/wing area.
7
Q
What is the aspect ratio?
A
Wing length:Wing Breadth.
