Across
- 3. form of measuring sound
- 4. a device for finding sources of sound underwater
- 6. to find things by finding the time for an echo to return and the direction from which it returns
- 7. a measure of the rate of decrease in the intensity of electromagnetic radiation as it passes through a given substance
- 8. a compound substance
- 10. the transmission of acoustic energy through a medium
- 11. allowing water to pass through
- 13. aspects of a stimulus; what are perceived after a stimulus
- 14. relating to sound
- 15. a cluster of soil particles
Down
- 1. inorganic, typically ceramic, alumino-silicate forming long-range, covalently bonded, non-crystalline networks
- 2. a dampening of sound
- 5. make softer
- 9. percentage of void space in a solid
- 12. a polymer with elastic properties