Distinguish between the processes of reflection, refraction, and scattering of light. Give an example of an atmospheric phenomena produced by each one. Which of these processes produces dispersion?
Light is scattered when visible light is deflected from its path and sent out in all directions. Light is scattered in the atmosphere by very small objects, such as air molecules, fine dust particles, water molecules, and some pollutants. Clouds appear white because cloud droplets scatter all wavelengths of visible light.
Light is reflected when visible light bounces off a surface at the same angle at which it strikes the surface. An example of reflection is the appearance of sun pillars, which are caused by the reflection of sunlight off ice crystals.
The refraction of light is the bending of light as it is transmitted at an angle through substances of different densities. Examples of refraction include mirages, halos, sundogs, tangent arcs, and rainbows.
The passage of white light through a prism is an example of "selective" refraction, also called dispersion.
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262 Immigration to the United States steadily rose from 1800 to the start of the Civil War. The overwhelming number of immigrants who arrived before the Civil War were from Northern Europe (England, Germany and Ireland . Following the hiatus of the Civil War, immigration rose to its zenith in the period between 1880 and 1910, with immigrants from Southern and Eastern Europe (Italy, Greece,
Poland, Russia comprising the majority of new arrivals. The period between WWI and WWII saw an almost complete halt of immigrants to the United States. Immigration since the 1950s has markedly changed, with the majority of new arrivals coming from Latin America, Asia and Africa. What will be an ideal response?
In the discontinuous reaction series, which mineral forms as a result of reaction between olivine and the rest of the magma?
a) More olivine b) Pyroxene c) Amphibole d) Biotite e) Potassium feldspar
The biologists' observations that the Carson Wandering Skipper populations had declined is an example of
a. data analysis b. identifying a problem c. performing an experiment d. proposing a hypothesis e. making testable predictions
Which of the following statements is true about DEMs and TINs?
A. One can convert a DEM into a TIN, or a TIN into a DEM. B. One can only convert a DEM into a TIN. C. One can only convert a TIN into a DEM. D. None of these are correct.