The light we see from the sun is not exactly the light that comes to the earth from the sun. We see sunlight as being whitish in color, but it actually is a blend of the colors of the rainbow. The reason we see it this way has to do with the way our eyes perceive color. This is because, “Our eye contains three kinds of light-sensitive cells, each sensing a different band of colors--one band centered in the red, one in the green and one in the blue” (“(S-4) The Many Colors of Sunlight,” 2006). This is why the colors we use in daily life all stem from the three primary colors red, blue and green and is actually the reason we use those colors as the primary ones. When all the colors are together we see it as white, because that’s how our eyes
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The reason we have weather is due to the way air behaves when it is heated up. When air is heated, “Each cubic meter (or cubic foot) of it weighs less than before heating. Where the heating is most pronounced, the warm air is more buoyant than the cooler air surrounding it, and tends to float upwards” ("(S-1) Sunlight and the Earth," 2006). This process is the reason we have weather here on earth. Another process that is key to earth having weather is the water cycle, which involves the circulation of water on earth. The sun heats the water and it is then turned into water vapor. The buoyant warm air rises with this vapor and as a result clouds are formed. When the clouds become overfilled with water vapor, the vapor cools back into water and falls back to the earth as …show more content…
If you think about electromagnetic waves all behaving like light waves, which they do, you would know that they can travel through space and do so at very high speeds. This means that it can, “Travel through space (which is a vacuum), traveling at a speed that is the same for all forms of electromagnetic energy and is equal to the speed of light, 3 x 108 m/sec (or 186,000 miles per second)” (“The Sun & its Energy, 2003). Since we know that light takes 8 minutes to reach us from the sun we can conclude that UV and IR waves take the same amount of time to reach
The reason we have weather is due to the way air behaves when it is heated up. When air is heated, “Each cubic meter (or cubic foot) of it weighs less than before heating. Where the heating is most pronounced, the warm air is more buoyant than the cooler air surrounding it, and tends to float upwards” ("(S-1) Sunlight and the Earth," 2006). This process is the reason we have weather here on earth. Another process that is key to earth having weather is the water cycle, which involves the circulation of water on earth. The sun heats the water and it is then turned into water vapor. The buoyant warm air rises with this vapor and as a result clouds are formed. When the clouds become overfilled with water vapor, the vapor cools back into water and falls back to the earth as …show more content…
If you think about electromagnetic waves all behaving like light waves, which they do, you would know that they can travel through space and do so at very high speeds. This means that it can, “Travel through space (which is a vacuum), traveling at a speed that is the same for all forms of electromagnetic energy and is equal to the speed of light, 3 x 108 m/sec (or 186,000 miles per second)” (“The Sun & its Energy, 2003). Since we know that light takes 8 minutes to reach us from the sun we can conclude that UV and IR waves take the same amount of time to reach