Rainbows form when water in the air reflects and refracts sunlight and disperses the normally white sunlight into colored light. White light is composed of colored light that bends at different angles when reflected and refracted, separating the white light into the distinct colors of a rainbow.Continue Reading
Rainbows are white light dispersed into its spectrum of colors. Rainbows become visible after sunlight and water drops experience a series of actions. First, light refracts when it touches the surface of a water drop. Next, light reflects off the back of a water drop, and lastly, light refracts again as it leaves. These refractions and reflections happen at varying angles that allow different colors to appear.
Dispersion causes the colors of a rainbow to appear in a specific pattern due to unique wavelengths for each color. Blue light has a shorter wavelength than red light and refracts at a greater angle, but dispersion due to the reflection step of the process makes blue light appear at a smaller angle than red. This happens for each color and is why rainbows are colored red, orange, yellow, green, blue, indigo and violet from top to bottom. Rainbows can form full circles, but viewers generally only see the above ground arc.Learn more about Earth Science
Increased wind speed accelerates the rate of evaporation, because it keeps the relative humidity of the air right above the water from rising. Additionally, the wind moves and disturbs the surface of the water, which causes the water to evaporate more quickly. The drier the air being blown across the surface of the water is, the more quickly the water evaporates.Full Answer >
According to the Union of Concerned Scientists, geothermal systems use pipes driven deep into the ground to heat air, water or other fluids for the purposes of generating electricity or heating buildings. In some cases, geothermal systems use natural underground hot springs for this purpose, or the systems may pump a thermal medium into the ground to absorb the Earth's natural heat.Full Answer >
Precipitation occurs when water is released from the clouds in any form. Water gets recycled on the Earth as a result of the water cycle where water evaporates, condenses and then falls as precipitation.Full Answer >
Rainbows occur when sunlight is refracted by water droplets. From the ground, a person only sees part of a rainbow. In reality, a rainbow is in the form of a complete circle rather than the arc most people are accustomed to.Full Answer >