Biological evolution has allowed some animals to fly. Find out exactly how their wings work to achieve this.
- Flight occurs when the upward force is greater than the downward.
- Flight is explained by Newton's third law.
- The shape of an animal's wing is important in achieving flight.
- Heavier birds require a large wingspan.
Soaring through the sky unaided is an experience that many people would enjoy, but only some animals have this amazing ability.
Flight is possible by creating an upward force – known as lift – greater than the gravitational downward force of their weight.
It's how animals create this upward force of lift …
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