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What causes the change in pitch of an approaching train whistle?
sound is wavelengths, and wavelengths get compressed when coming to you (and stretched when going away). the closer the wavelengths, the higher the pitch!
How could you use the spot lights at a play to make the yellow clothes of the performers suddenly change to black?
You would have to use light at wavelengths that aren't reflected by the yellow fabric(or, since materials seldom reflect a single wavelength only, those wavelengths it reflects poorly). It would appear dark then.
If the wavelengths were shortened would the frequency be higher or lower?
It would be higher
How does the energy assoicated with waves change wave length changes?
Longer wavelengths (and lower frequencies) have less energy. Shorter wavelengths (and higher frequencies) have more energy.
What thing breaks light into its various wavelengths?
A prism or a diffraction grating would do it.
Does osmosis cause food coloring to change the color of water?
It absorbs different wavelengths of visible light
What color would plants be if they absorb all wavelengths of visible light?
why does plants color change to black when absorbed all wavelengths
When would quantum theory change?
when data shows electron energy levels are not related to light wavelengths.
What causes the change in pitch of an approaching train whistle?
sound is wavelengths, and wavelengths get compressed when coming to you (and stretched when going away). the closer the wavelengths, the higher the pitch!
How would you describe the wavelengths of incoming solar radiation compared to the wavelengths of reradiated heat?
The wavelengths of incoming solar radiation are shorter than the wavelengths of reradiated heat.
What would you have to change to live on planet Mercury?
you would have to change its place cause we would all burn cause its right next to the sun.
What causes electromagnetic radiation to change its wavelengths?
Absorption and re-emission.
Why is the Doppler effect witnessed by someone at a fixed point when the source of the sound is moving?
because if the wavelengths did not bunch up and spread out, there would be no change in pitch
What is the difference between the red shift and the blue shift?
A "redshift" is a change in the light observed from a source to longer wavelengths. That's a change from the blue end of the spectrum to the red end of the spectrum. A "blueshift" is the opposite. It's a change towards shorter wavelengths.
Would ocean temperature change cause earthquake?
Yes it would because of the cause of the seas strength
How do you change the pitch sound?
Adjust the wavelenght! The higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. Basically, the longer the wavelength, the lower the pitch.
How could you use the spot lights at a play to make the yellow clothes of the performers suddenly change to black?
You would have to use light at wavelengths that aren't reflected by the yellow fabric(or, since materials seldom reflect a single wavelength only, those wavelengths it reflects poorly). It would appear dark then.
