Ineed with this !
1. when light is scattered a is created.
2. describe how we see using the 6 parts of the eye.(list 6 parts of the eyes)
3. describe how we hear using the 8 parts of the ear (list 8 parts of the ear)
4. what do we call the material any wave travels through?
5. sound are caused
6. sound travels in .
7. a sound will travel in a denser medium.
8. what happens to the molecules when they are heated?
9. what are 3 ways heat transfer energy?
10. how does convection in the earth's mantle move plates?
11. what happens during thermal expansion?
12. how radiation is related to em waves?
13. what is contraction? what would cause it to happen?
i would very apprecieate if you guys me all of 13 questions

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.