Which statement best describes the relationship between wind and air pressure? a. lower-pressure areas are associated with weaker winds

b. higher-pressure areas are area associated with stronger winds

c. winds move from areas of low pressure to areas of high pressure

d. winds move from areas of high pressure to areas of low pressure

Sorry ,

Air Pressure: How it causes wind

Air Pressure: How it causes wind A change in air pressure can create wind. The wind will become stronger as the pressure difference increases. Wind and air pressure are very connected with one another. Differences in air pressure around the planet drive wind and ultimately, our weather patterns.

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.