Across
- 2. An experimental model that you test
- 4. A drawing people use to get a rough idea
- 5. Drag cars need to this to decrease drag
- 7. a rules for something to make things fair
- 8. The opposite pull that slows cars down
- 9. a gas that you exhale
Down
- 1. An essential thing to use when designing airplanes to make move easily through air
- 2. A repeated design that you put on something
- 3. A small sum of the big picture
- 6. If too much weight is applied on a building beyond its _______, it will collapse