Grade 8 Unit 5 Vocabulary Crossword

2. A change in a living thing that helps it survive in its environment.
7. To move smoothly through the air without using power or flapping (like a paper airplane).
8. To move wings up and down quickly in order to fly.
9. The distance from the tip of one wing to the tip of the other.
11. How heavy something is; in flight, this is the force of gravity pulling an object down.
12. To hold something up or keep it from falling.
13. A noticeable part or quality of something (like a bird’s beak or a plane’s tail).
15. Happening near the beginning of a process or period of time.
16. Using energy (like muscles or an engine) to create movement.

1. Kept within a certain boundary; not having full freedom or power.
3. Having an empty space inside (Example: Many birds have hollow bones to stay light).
4. To make it possible for something to happen.
5. The ability or power to do something specific.
6. The process of moving through the air using wings.
10. Being very good at a difficult task through practice.
12. To fly high in the sky by riding rising air currents, often without flapping.
14. To change gradually over many generations.