physics

2. - Ability of a material to return to its original shape after being stretched.
5. - Heat transfer by the movement of a fluid.
6. Hole - Region of space with gravity so strong that nothing can escape.
8. - Change in velocity over time.
10. Effect - Change in frequency or wavelength due to relative motion.
12. - Ability of a system to store electric charge.
13. - Maximum displacement from equilibrium.
15. - Path in which electrons flow.
17. - Mass per unit volume of a substance.
18. Momentum - Quantity of rotation of a body; mass times velocity times radius.
19. - Property of matter that causes it to experience a force in an electromagnetic field.

1. Wave - Wave of electric and magnetic fields.
3. - Bending of waves around obstacles.
4. Field - Region around a charged particle where an electric force is exerted.
7. - Upward force exerted by fluid, opposing the weight of an immersed object.
9. - Negatively charged subatomic particle.
11. - Ability to do work.
13. - Basic unit of a chemical element, consisting of a nucleus and electrons.
14. - Ability of a material to conduct electric current.
16. Angle - Angle of incidence beyond which total internal reflection occurs.