1. Ultraviolet is more harmful than infrared radiation because it has energy and power. Its most energetic form can destroy bacteria and viruses, meaning that it can cause damage to human skin.
2. When visible radiation is beamed through the atmosphere, it is scattered causing the blue sky and red sunsets. Another use of visible light is the energy it provides for photosynthesis. This is essential because from photosynthesis we obtain oxygen, which is necessary for human life.
3. The dryer states have a higher fluctuation in weather because of their concentration of greenhouse gases. The more humid states obviously have more water vapor, which holds in the heat from the day. The more arid states do not contain high amounts of gas molecules meaning that the beams of radiation are not blocked as well during the day, and the heat is not kept in at night.
4.
a. If Earth had fewer gas molecules, the daytime would be hotter because there would be enough molecules to adsorb the radiation coming from the sun, therefore increasing the temperature.
b. On the other hand, fewer gas molecules would cause nights to be cooler. This is because there would not be enough gas molecules to hold in the heat to maintain a steady temperature during the night.
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