Answer:
Dispersion is a statistical term that describes the size of the distribution of values expected for a particular variable. Dispersion can be measured by several different statistics, such as range, variance, and standard deviation.
The most commonly seen consequence of dispersion in optics is the separation of white light into a color spectrum by a prism. From Snell's law it can be seen that the angle of refraction of light in a prism depends on the refractive index of the prism material.
Explanation:
Answer: Hi there,
Tar Sands: Used more commonly than oil sands. It helps workers make manmade roads. This was introduced around the 1800s. Although it is quite similar to Oil Sands. The U.S uses this method to create roads instead of oil sands. They are mixed the same way as oil sands but these can produce gasoline.
Oil Sands: Seems more accurate than tar, they are mixed with water, clay, and sand. It forms bitumen which is created by the following items I mentioned which make the oil sands very dense because of what else they put in there (petroleum). It is very thick compared to tar sands. They are most important in the Candian economy.
Hope this helped :)
I think it’s A) United States and Canada. If you look at the map closely on satellite it’ll show that the Rocky Mountains would cross the US Border onto Canada.
The Pony Express and/or Transcontinental Highway,