Across
- 4. - The axle that receives power from the rubber band
- 7. - The round part of the car that rolls along the ground
- 8. - The rubber band system that stores energy and powers the car
- 14. - How straight and correctly positioned parts are compared with each other
- 15. - A small part used to keep a wheel from rubbing against the chassis
- 17. - The ability of a material or structure to resist bending
- 19. - The center part of a wheel where it connects to the axle
- 22. - A cylinder that something can wind around as the axle turns
- 23. - A rule or limitation that a design must follow
- 24. - An early version of a design built to test ideas
- 25. - The location where one end of the rubber band attaches to the car
- 26. - A force that resists movement when two surfaces rub against each other
- 30. - The distance between the front axle and rear axle
- 31. - Energy stored when a rubber band is stretched or twisted
Down
- 1. - The distance between the wheels on opposite sides of the car
- 2. - Requirements used to judge whether a design is successful
- 3. - The outer surface of a wheel that grips the ground
- 5. - The movement of energy from the rubber band to the axle wheels and car
- 6. - A rod that connects the wheels and allows them to rotate
- 9. - A tube or sleeve that supports an axle and reduces friction
- 10. - The main frame or body of the car that supports all other parts
- 11. - The grip between the wheels and the ground
- 12. - A new or improved version of a design
- 13. - How well a design turns stored energy into useful movement
- 16. - The amount of matter in an object
- 18. - The distance across the center of a circle or wheel
- 20. - A part that helps an axle rotate with less friction
- 21. - How quickly an object increases its speed
- 27. - A twisting force that causes an axle or wheel to rotate
- 28. - Something that can be changed during an experiment or test
- 29. - When improving one part of a design may make another part worse