Which phrase best defines erosion? cementing layers of rock together to form stone moving bits of rock and soil from one place to another breaking up rocks into smaller pieces layering bits of rocks and soil

The best phrase to define erosion is the moving bits of rock and soil from one place to another.

Option 2

Explanation:

Erosion is a natural process which can turn into disaster if the erosive agent is more than the surface. The erosive agents are the agents which create the erosion process.

In erosion, the external erosive agents will remove the bits of rock and soil from the surface and displace them to another place. The erosion can turn into disaster when large amount of water, wind and glaciers will erode the surface in high speed.

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.

the ima (higher than 1m) will be greater than the ima with the height of 1m.