Science & Waves?
Im trying to put together a study guide, could someone answer these questions.What property of both longitudinal and transverse waves increases the am
I'm trying to put together a study guide, could someone answer these questions.
What property of both longitudinal and transverse waves increases the amount of energy transferred?
What happens to the medium as a wave moves through it?
How are frequency and wavelength related?
Which color in the visible spectrum has the most energy?
Why isn't the sky orange?
What is the correlation between the length of a light wave and its frequency?
What is a wave?
Identify properties (parts) of waves. ( e.g., crest, trough, wavelength, resting place,
amplitude, frequency)
Describe how energy influences frequency, or amplitude
Describe and/or make observations regarding the relationship between wavelength and frequency.
Compare/contrast the two main groups (types) of waves: mechanical and electromagnetic.
Compare/contrast various waves in the electromagnetic spectrum.
Describe the importance/uses for each wave in the electromagnetic spectrum.
Compare/contrast the 3 types of mechanical waves: longitudinal (compressional), transverse and surface in terms of direction of energy, direction of particle motion and materials through which each wave travels (just solids? or through all phases? or?)
Explain why electromagnetic waves are significant to study of astronomy.
Explain how seismic waves (primary and secondary) are used to determine layers of the Earth’s interior.
Sound waves: what type of wave, through what materials, speed, change in speed in
different materials, frequency/pitch, amplitude/volume, …
Human ear: identify major parts (inner, middle, outer; auditory canal, stirrup, hammer, ear drum, cochlea…)
Wave Behavior: reflection and refraction
define
describe
give examples
identify in different scenarios whether sound or light
make predictions regarding reflection of light
make predictions regarding refraction of light
or:I'm trying to put together a study guide, could someone answer these questions.What property of both longitudinal and transverse waves increases the amount of energy transferred?What happens to the medium as a wave moves through it?How are frequency and wavelength related? Which color in the visible spectrum has the most energy? \tWhy isn't the sky orange? \tWhat is the correlation between the length of a light wave and its frequency?What is a wave?Identify properties (parts) of waves. ( e.g., crest, trough, wavelength, resting place, amplitude, frequency)Describe how energy influences frequency, or amplitudeDescribe and/or make observations regarding the relationship between wavelength and frequency.Compare/contrast the two main groups (types) of waves: mechanical and electromagnetic.Compare/contrast various waves in the electromagnetic spectrum.Describe the importance/uses for each wave in the electromagnetic spectrum.Compare/contrast the 3 types of mechanical waves: longitudinal (compressional), transverse and surface in terms of direction of energy, direction of particle motion and materials through which each wave travels (just solids? or through all phases? or?)Explain why electromagnetic waves are significant to study of astronomy.Explain how seismic waves (primary and secondary) are used to determine layers of the Earth\u2019s interior.Sound waves: what type of wave, through what materials, speed, change in speed in different materials, frequency/pitch, amplitude/volume, \u2026Human ear: identify major parts (inner, middle, outer; auditory canal, stirrup, hammer, ear drum, cochlea\u2026)Wave Behavior: reflection and refractiondefinedescribegive examplesidentify in different scenarios whether sound or lightmake predictions regarding reflection of lightmake predictions regarding refraction of light
or:Energy of mechanical waves are proportional to the square of the frequency and the square of amplitudeAs a wave propagates, the medium of the wave oscillatesvelocity = frequency * wavelengthviolet (which is actually blue) is the higher energy end of the spectrum, having higher frequencyDue to Rayleigh scattering the sky is orange only during sunrise and sunset and is usually predominantly blue (except in dust storms and such). Since blue light has a higher frequency, thus shorter wavelength, it is more easily \"hit\" by the air particles in the atmosphere, and scatters. At the beginning/end of the day, the sunlight has to travel further through the atmosphere to reach our eyes. This results in the redder part of the spectrum having more chance to be scattered, and while the bluer part has already been filtered out.- repeated question- see above-a wave is a transfer of energy from one point to another through oscillation of media (i.e., the electromagnetic field in case of EMR), where there are no permanent displacement of mass.crest - highest point, peak - known as compression in a longitudinal wavetrough - lowest point, wavelength - the distance over which the shape of the wave repeatsresting place - no idea - this may refer to the antinodes of a standing/stationary wave - or the equilibrium positionamplitude - The maximum displacement of a particle in the wave from the equilibrium or rest position (to the crest or trough)frequency - The reciprocal of the periodPeriod - The time it takes for the wave to complete a cycle (the shape repeats)- repeated question - - repeated -mechanical - can be longitudinal or transverse - require a traditional medium, id est, a medium made of matter - cannot travel in \"vacuum\" - speed is affected by the density of medium - denser medium -> faster waveelectromagnetic - is transverse, the electric and magnetic components are orthogonal to each other and the direction of propagation - does not require a traditional medium - can travel in \"vacuum\" - speed is affected by the density of medium - denser medium -> slower wave - is quantizedThere is a third type of wave, gravitational wave, they behave somewhat similarly to EM wave, however this is not taught in high schoolGamma - high energy, used in therapy and imagingX ray - high energy, used in medical imagingUV - high energy, used in sterilizing, dentistry and detecting defects in materials Visible - medium-ish energy, used for seeing, optical fiber, spectrocopy (chemical analysis)Infrared - medium-low energy, used for heat detectionMicrowave - medium-low energy, used for cooking, communicationRadio - low energy, used for radar, communication*All of them are used in astronomy- pass -Different energies of EM wave are given off by different stellar and interstellar objectsHigher energy waves are given off by hot and energetic objects such as globular star clusters or black holesLower energy waves are given off by cooler objects, such as brown dwarfs and smaller starsEM wave can also be streched by the expansion of space, hence older sources are observed with less energetic wavelength, such as seyfert galaxies and cosmic microwave background radiationPrimary waves are longitudinal, secondary waves are transverse and travels slowerThese waves travel at different speed depending on the density of the mediumIn fact the secondary waves are reflected off the core of the earthThrough tracking the movement of the waves, the layers of earth's interior can be studied, mostly density, depth and phaseHuman ear - sorry, not my expertiseReflection - when a wave hits a surface, it is either transmitted, reflected or absorbedangle of reflection is equal to angle of incident (measured against the normal)Refraction - when a wave changes media of differing density, the speed of the wave changes, and so does the direction of propagationFor light wavessin i / sin r = Vi / Vr = Nr / Niwhere i = angle of incident r = angle of refraction Vi = velocity of incident light Vr = velocity of refracted light Ni = refractive index of incident medium Ne = refractive index of the other mediumSorry there's just too many question, it started to remind me of my HSC and answering became no longer fun. Hope this was useful. please clicked that button, this response is worth way more than 5 point. oh god, i spent so much time on it.
