Across
- 3. copy animals features to make something that works the same
- 4. a strong force that pushes something
- 5. what pushes you back
- 8. how easy it is for air to flow around something
- 9. the curved surface on airplane wings
- 10. air that pushes wings up
Down
- 1. particles that build up and push out inside a container
- 2. push an object forward
- 6. the force that pulls you down to the earth
- 7. a measure of how heavy something is