| Basics of Waves | ||
| #1 | The distance between successive waves is called this. | wavelength |
| #2 | sound is this type of mechanical wave | longitudinal |
| #3 | The source of all wave motion | vibrations |
| #4 | region on a longitudinal wave that corresponds to a trough on a transverse wave | rarefaction |
| #5 | what is the frequency of a wave if it has a speed of 12 cm/s and a wavelength of 3 cm | frequency = 4 Hz |
| Properties of Waves | ||
| #1 | A wave with large amplitude carries more _________ than a wave with small amplitude | energy |
| #2 | The unit that means one cycle/sec | Hertz |
| #3 | An example of a wave that doesn't require a medium | electromagnetic waves |
| #4 | What is the relationship between wavelength and frequency? | The shorter the wavelength, the higher the frequency |
| #5 | What does wave speed depend on? | The medium that the wave is traveling in |
| Waves are Interacting! | ||
| #1 | Why are reflected light rays important? | They allow us to see |
| #2 | The bending of waves around a barrier is _________________. | diffraction |
| #3 | During constructive interference, the ____________ of the resulting wave increases | amplitude |
| #4 | In this type of interference, the amplitude of the new wave is the difference between the amplitudes of the original waves. | destructive interference |
| #5 | The portions of a standing wave that do not move are called________. | nodes |
| Resonance + other things | ||
| #1 | A resonating object absorbs ___________ from another vibrating object. | energy |
| #2 | The frequencies at which standing waves are produced are called ___________ | resonant frequencies |
| #3 | Explain in terms if resonance how an earthquake can cause buildings to collapse. | It causes them to vibrate at their resonant frequencies |
| #4 | What was Galloping Gertie? | The Tacoma Narrows bridge |
| #5 | Name two interactions that can occur when a wave encounters a barrier | reflection, interference, diffraction |
| Miscellaneous stuff about waves | ||
| #1 | A wave that is a combination of longitudinal and transverse | surface wave |
| #2 | What do waves transfer? | energy |
| #3 | What is the formula for wave speed? | wave speed = frequency x wavelength |
| #4 | A __________ is a substance through which a wave can travel. | medium |
| #5 | How do particles in a transverse wave vibrate? | perpendicular to the direction of the wave |
| Final Question | |
| The crests of a wave are 0.4m above the troughs. The wavelength of the wave is 2m and the frequency is 4 Hz. What is the amplitude and wave speed? | Amplitude= 0.2m, wave speed = 8 m/sec |