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Sound
Chapter 2 Edelman
| Question | Answer |
|---|---|
| All waves carry __________ from one location to another. | Energy |
| Different types of waves are... | Heat, sound, magnetic and light |
| Sound is what type of a wave? | Mechanical |
| Can sound travel in a vacuum? | No |
| What must sound travel through? | A medium |
| When molecules are squeezed together it is called what? | Compression |
| When molecules are stretched apart it is called what? | Rarefication |
| Does sound travel in a straight line? | Yes |
| Are sound waves transverse or longitudinal? | Longitudinal |
| The effects that a medium has on a sound wave is called what? | Acoustic propagation properties |
| The effects that the sound wave has on the tissue it travels through is called what? | Biologic effects |
| The three acoustic variables that distinguish a sound wave from other types of waves are what? | Pressure, density and distance |
| Pressure is the concentration of force in an area and is measured in what? | Pascals |
| Density is the concentration of mass in a volume and is measured in what? | kg/cm cubed |
| Distance is the measure of particle motion and is measured in units of what? | cm, mm |
| Which type of waves have particles that move perpendicular to the direction that the wave propagates? | Transverse |
| In longitudinal waves, the particles move __________ or ____________ that the wave propagates. | parallel to or in the same direction |
| A pair of waves are considered _____ __________ when their peaks occur _____ ______ _________ _____________. | in-phase; at the same time |
| In contrast, out-of-phase waves' _________ and _________ occur at different times. | Peaks; troughs |
| When two waves arrive at the same destination at the same time, the waves lose their individual characteristics. This is called what? | Interferance |
| In-phase waves traveling simultaneously create what type of interference? | Constructive, resulting in a wave that is larger than either of the two original waves |
| Out-of-phase waves traveling simultaneously create what type of interference? | Destructive; where the resulting wave is smaller than the two original waves |
| When waves of different frequencies interfere, they create both constructive and destructive interference at different times. |
Created by:
gillybruursema
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