Sound Waves

7. What traveling through and object allows waves to move faster.
8. The most common way through which sound waves travel
11. because there are not any ______, sound does not travel through outer space.
12. What having to do with sound depends on how close together the particles of the substance are in the medium.
16. The apparent change in _______ as a wave source moves in relation to the listener
17. The type of wave sound travels
18. How much matter there is in a given amount of space
19. Temperature is the degree or ______ of heat present in a substance or object
20. Solid materials are usually more elastic than ____ or gases.
21. What changes with frequency
24. Frequency is the number of vibrations that occur per
25. What you hear when vibrations reach the air near your ears.
26. sound travels fastest through this medium

1. what is created when the back and forth motion pushes air particles together.
2. What the energy in sound waves are carried through.
3. Longitudinal waves are generated when what is forced by energy to vibrate
4. The ability of a material to bounce back after being disturbed
5. Pitch is a description of how high or low the sound ______ to a person
6. How sound waves that travel through the air or other media.
9. what is created when the back and forth motion pushes air particles apart.
10. second through a unit of area is called intensity
13. the speed of sound depends upon this type of property
14. What you actually hear is ______ as loudness.
15. the amount of _____ a wave carries
22. This increases with increased energy
23. Sound waves travel slower when the temperatures are what