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PS Ch. 10 Review
DHS PS Ch. 10 Review
| Question | Answer |
|---|---|
| What type of waves does matter in the medium move back and forth at right angles to the direction the wave travels? | tranverse |
| A material through which a wave transfers energy is called a? | medium |
| Some examples of waves would be? | water, sound, light, seismic, etc. |
| Sound would not travel through this type of medium? | vacuum |
| What type of waves are sound waves? | compressional |
| A repeating disturbance that transfers energy through matter or open space is a? | wave |
| What do waves carry? | energy |
| In what type of waves does matter in the medium move back and forth and in the same direction the wave travels? | compressional |
| What type of wave can travel through outer space? | light or radio waves |
| A combination of compressional and transverse waves are called? | seismic or water waves |
| What is a measure of the energy in a wave? | amplitude |
| What are the highest points of a transverse wave called? | crests |
| _________ is how many wavelengths pass a fixed point each second? | frequency |
| The lowest points of a transverse wave are called? | troughs |
| What is the less dense region of a compressional wave called? | rarefaction |
| Transverse waves do not have? | compressions or rarefactions |
| As the frequency increases, the wavelength _____ ? | decreases |
| As the frequency decreases, the wavelength _____ ? | increases |
| Molecules pass energy on to? | neighboring molecules |
| All waves are produced by something that? | vibrates |
| A material through which a wave travels is called a? | medium |
| A medium may be what type of matter? | solid, liquid, gas, or any combination of these |
| What type of waves can travel only through matter? | mechanical waves |
| What are the two types of mechanical waves called? | transverse and compressional |
| What type of waves does the matter in the medium move back and forth at right angles to the direction that the wave travels? | transverse waves |
| What is an example of a transverse wave? | Part of a water or seismic wave, "the wave", shaking a rope, snake in the grass, etc. |
| What type of waves does the matter in the medium move in the same direction that the wave travels? | compressional waves |
| An example of a compressional wave is? | Part of a water or seismic waves, sound waves, dominoes, slinky, spring, accordion, etc. |
| How can waves differ? | energy, speed, and appearance |
| What type of waves have crests and troughs? | transverse waves |
| The highest point in a transverse wave is called? | crests |
| The lowest points in a transverse wave is called? | troughs |
| What type of waves have compressions and rarefactions? | Compressional waves |
| The dense regions in waves are called? | compressions |
| The less dense regions in waves are called? | rarefactions |
| The distance between one point in the wave and the nearest point just like it is called? | wavelength |
| How many wavelengths pass a fixed point each second is called? | frequency |
| Frequency is expressed in? | hertz (Hz) |
| The frequency of a wave equals the rate of? | vibration of the souce that creates it |
| How fast a wave moves forward is called? | wave velocity |
| Wave speed equals? | wavelength x frequency |
| Light waves travel _____ than sound waves? | faster |
| Sound waves travel faster in this than in a gas? | liquids and solids |
| Light waves travel faster in _____ than empty space than in liquids and solids? | gases |
| A measure of the energy in a wave is called? | amplitude |
| The more energy a wave carries, its amplitude will be? | greater |
| Amplitude of compressional waves is related to how? | tightly the medium is pushed together at the compression |
| The denser the compressions, the ______ the amplitude is and the more energy the wave carries | larger |
| The less dense the rarefactions, the ______ the amplitude and the more energy the wave carries. | larger |
| In a thunderstorm, why do you see the lightning before you hear the thunder? | Light waves travel much faster than sound waves |
| When does reflection happen? | when a wave strikes an object and bounces off of it |
| What types of waves can be reflected? | all waves |
| The angle of incidence of a wave is always equal to the angle of? | reflection |
| An imaginary line perpendicular to reflective surface is called? | normal |
| The angle formed by the wave striking the surface and the normal is called? | angle of incidence |
| The angle formed by the reflected wave and the normal is called? | Angle of reflection |
| The bending of a wave caused by a change in its speed as it moves from one medium to another is called a? | refraction |
| The greater the change in speed is, the wave bends? | more |
| When a wave passes into a material that slows it down, the wave is bent how? | toward the normal |
| When a wave passes into a material that speeds it up, the wave is bent how? | away from the normal |
| An object that causes a wave to change direction and bend around it is called a? | diffraction |
| If the obstacle is smaller than the wavelength, the wave diffracts? | around it |
| If the obstacle is much larger than the wavelength, the wave diffracts? | not at all, it reflects |
| The ability of two or more waves to combine and form a new wave is called? | interference |
| Waves pass right through each other and continue in? | their original direction |
| New, or composite, waves exist only while the two original waves continue to? | overlap |
| This is when waves add together? | constructive interference |
| This is when waves subtract from each other? | destructive interference |
| What type of wave is a wave pattern that stays in one place? | standing waves |
| What type of waves from when waves of equal wavelength and amplitude that are traveling in opposite directions continuously interfere with each other? | standing waves |
| The places where two waves always cancel each other is called? | nodes |
| What is the ability of an object to vibrate by absorbing energy at its natural frequency? | resonance |
| T/F: AM radio waves have longer wavelengths than FM radio waves making their reception much better around tall buildings and mountains | True |
| If you stand next to a swimming pool and see an object under water, it will seem to be? | closer to the surface than it really is |
| For a given wave, if the frequency doubles, the wavelength? | is halved |
| If a wine glass produces a 330 Hz tone when struck, what frequency tone would be used to break it? | 330 Hz |
Created by:
basmith
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