Day 12 Puzzle (Review of Day 5 & 6)

3. friction is a ___ that resists the motion of one surface sliding or rolling over another
6. the chemistry book was newer because the physics book’s surface had been ___ out over time, as shown by its evenly-spread out particles
8. friction works ___ the pushing/effort force
9. the chemistry book had more friction because its uneven surface had more ___ that resist motion
11. the wood ruler represented this in our last lab
12. one of a paraplegic's limitations include a lack of leg ___ (difficulty or inability to walk, run, or climb)
16. the force that slows things down when an object rolls across a surface, like a wheel or ball, and usually causes less resistance than sliding friction
17. a force that pulls things down towards Earth
18. how many different types of levers exist
19. a ___ is a push or pull
20. every type of surface has this
22. we draw these to represent the size and direction of a force
23. distance from the fulcrum to the point where you apply the effort force

1. if something is able to move across a surface, then the pushing/effort force is ___ than the friction/resistance force
2. another way of saying friction force
4. the force that slows things down when one surface slides directly over another
5. when particles bump into each other, they transfer energy, move faster, and produce this
6. a lever is a type of this
7. the closer the load is to the fulcrum, the ___ effort is needed to lift it
10. we use arrows to represent the size & ___ of a force
13. a Class 2 lever requires less effort than a Class 1 lever because its effort arm is ___
14. physical condition where a person loses movement and/or sensation in their legs and lower body
15. friction ___ things down
20. the Crayola marker represented this in our last lab
21. the materials caddy represented this in our last lab