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Stack #4550814
| Question | Answer |
|---|---|
| Light is a form of _______ emitted by the _______ or a light source. | energy and sun |
| Light is a type of ____ that travels as an electromagnetic _____. | energy and wave |
| Electromagnetic waves don't require a ____ to travel. | medium |
| Light travels faster in the _____ of space than it does in _____ (such as air and gas). | vacuum and matter |
| Light travels as a ______wave, in an ____ and _____ motion. | transverse, up, down |
| Light travels ______ and _______. | fast and straight |
| A beam of light as it travels outward from its source. | straight-line |
| All waves can be deflected, distorted or changed when they come in contact with a boundary. | wave disturbance |
| Occurs when light waves bounce off an object | reflection |
| Occurs when light waves transfer energy to particles of matter. | Absorption |
| Occurs when light waves pass through an object without interacting. | Transmission |
| The change in direction of a wave when it changes speed as it travels from one material to another. | Refraction |
| Occurs when waves bend around a barrier. | Diffraetion |
| When light scatters in all directions | scattering |
| no light can pass through | opaque |
| some light can pass through | translucent |
| light can pass through easily | transparent |
| Highest energy wave (ex: treating cancer) | gamma waves |
| higher energy (ex: dental check) | X ray waves |
| produced by the sun (ex: tanning beds) | UV waves |
| only waves that humans can see (ex: photography) | visible light |
| produced by hot bodies (ex: remote control and heaters)) | infared waves |
| considered low energy (ex: heating/cooking) | microwaves |
| lowest energy EM wave (ex: cell phone) | radio waves |
| can be used by humans to communicate, entertain, treat medical issues, cook, etc... | electromagnetic |
| the finding pf an object using reflected sound | echolocation |
| a reflected sound wave | echo |
| the softer the surface, the more sound is ______. | absorbed |
| The harder the surface, the more the sound is _____. | reflected |
| The disappearance of a sound wave into a surface. | absorption |
| The bouncing of a sound off a surface. | reflection |
| The further away the sound, the ____ the pitch | lower |
| the closer the sound, the ____ the pitch | higher |
| The change in pitch (frequency) as a sound gets closer to you. | Doppler Effect |
| a substance through which a wave can travel | medium |
| Sound waves are a _____ wave caused by vibrations that travel through a medium. | longtidudinal |
| The vibrations of waves travel ________ from an object. | away |
| a back and forth movement | vibrations |
| a form of energy | sound |
| sound is created by ______ that produce _____ pf energy that moves through _____. | vibrations, waves, matter |
| pitch is measured by | hertz |
| loudness is measured by | decibels |
| sound travels fast through ______. | solids |
Created by:
tiffany103