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In the United States, the Continental Divide of the Americas crosses Alaska, Montana, Wyoming, Colorado and New Mexico. It also forms the eastern third of the boundary separating Idaho and Montana.
it refracts because it travels in different velocities and other colors of light travel in different speeds When light crosses a boundary between mediums, it changes speeds, and it bends or changes the angle that it is travailing at when it crosses the boundary.
A wave undergos refraction when it crosses the boundary between two media in which it has different speeds.
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4 runs! It crosses the rope with a bounce or role's.
The Aleutian Island chain of Alaska crosses the 180° meridian, the boundary between east and west longitude. So the farthest east longitude and farthest west longitude in the USA are both 180 degrees.
Light refracts when is crosses the boundary between two materials. That means that is the light is coming in at one angle, then it will change direction at the interface and have a different angle moving out from the other side. There is an old formula called Snell's Law that predicts the exit angle in terms of the properties of the material, i.e. in terms of the index of refraction. There is reflection as well. Some light bounces off of a boundary and some is transmitted.