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Across 3. is a push or pull upon an object 5. an object placed on a tilted surface will often slide down the surface 7. waves are the only electromagnetic waves we can see 10. an object that has motion whether it is vertical or horizontal motion 11. creation and destruction of chemical bonds 13. the standard metric unit of power 16. of an object is determined by its motion and position 17. has a high energy and very short wavelength 18. the standard unit of work or energy 19. increases the strength of aluminum and magnesium alloys 20. what melts things with a liquid 21. an educated guess 22. uses high frequency sounds that are higher than the human ear can hear 23. the quantity of people or things in a given area or space 24. exerted on the object by the fluid

Down 1. the stored energy of position possessed by an object 2. term used by scientists to describe the entire range of light that exists 4. when a ray of light strikes a plane mirror 6. originates from the splitting of uranium atoms in a process called fission 8. is a pressure wave when an object vibrates, it creates a mechanical disturbance in the medium 9. which are the compounds associated with life processes 12. have the smallest wavelengths and the most energy of any wave in the electromagnetic spectrum 14. is the energy a substance or system has related to its temperature 15. decay occurs in unstable atoms nuclei