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LIGHT AND SOUND
STUDY AIDS FOR LIGHT AND SOUND
| Question | Answer |
|---|---|
| Light waves can be represented best by _____________________ (a rope being shaken up and down / a spring being released so that sections travel down the spring in a straight line). | a rope being shaken up and down |
| Compared to all of the other parts of the electromagnetic spectrum, visible is a _____________________ part of the spectrum. (large / small) | small |
| In longitudinal waves, the particles travel ____________________ (back and forth in the direction of the wave / up and down). | back and forth in the direction of the wave |
| If sound is being represented by a spring the squeezed together section of the spring would be the ________________ of the sound wave. (compression / rarefaction) | compression |
| If a sound has a frequency of 65 Hz and a wavelength of 10 meters, the speed of the sound wave is _______________ (REMEMBER: Speed | 650 m/s |
| What part of the electromagnetic spectrum can cause sunburns? | ultraviolet or UV radiation |
| Constructive interference will cause the amplitude of sound to _________________ (decrease / increase) and the sound will be _______________________ (louder / softer). | increase |
| ______________________ is the number of waves that pass by a meter each second. | frequency |
| If there is a decrease in the frequency of waves it usually means that the waves’ wavelengths are __________________________. | longer |
| ______________________ are measured from crest to crest or trough to trough. | wavelength |
| In order to produce sound objects must _____________________. | vibrate |
| Concave lens curved so that they are thickest through the __________________ (center / edges). | edges |
| When light rays pass through a convex lens they ______________________ (directed to a signal center point / fanned out in different directions). | directed to a signal center point |
| Objects appear bent when they are placed in water. This is an example of _______________. | refraction |
| What kind of waves are sound waves, longitudinal, transverse, or surface waves? | longitudinal |
| If sound is being represented by a spring the stretch out section of the spring would be the ________________ of the sound wave. (compression / rarefaction) | rarefaction |
| Of the two types of waves only _________________ waves can travel through the vacuum of space. (light / sound) | light |
| Of the different types of electromagnetic radiation which one has the least amount of energy, lowest frequency, and longest wavelength? | radio waves |
| Sound can travel the fastest through ________________. | solids |
| A _____________ lens would be found in microscopes and telescopes. (concave / convex) | convex |
| Lens ________________ most light. (diffract / reflect / refract) | refract |
| Convex lens curved so that they are thickest through the __________________ (center / edges). | center |
| Doctors can bounce sound waves off of organs inside a person to _______________ (correct damage to the organs without surgery / get a picture of the organs) | get a picture of the organs |
| Temperature and density of matter both affect the __________________ of sound. | speed |
| What two parts of the electromagnetic spectrum can be used to kill cancer cells? | x rays and gamma rays |
| Of the different types of electromagnetic radiation which one has the greatest amount of energy, highest frequency, and shortest wavelength? | gamma rays |
| When light rays pass through a concave lens they ______________________ (directed to a signal center point / fanned out in different directions). | fanned out in different directions |
| When an object starts to vibrate because something else is vibrating at its natural frequency it is called ___________________________. | resonance |
| To locate objects under water fishermen often use _______________________. | sonar |
| Resonance causes _____________________ (constructive interference / destructive interference) and makes the sound louder. | constructive interference |
| What kind of waves are light waves, longitudinal, transverse, or surface waves? | transverse |
| A ____________lens would be found in cameras. (concave / convex) | concave |
| Destructive interference will cause the amplitude of sound to _________________ (decrease / increase) and the sound will be softer. | decrease…softer |
| If a musical instruments starts to vibrate on its own you know that ___________________ (it was exposed to its natural frequency / it was exposed to destructive interference) | it was exposed to its natural frequency |
| In transverse waves, the particles travel ____________________ (back and forth in the direction of the wave / up and down). | up and down |
Created by:
weathersbee
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