2. Spectrum is a good descriptor of the types of energy found in the electromagnetic radiation because it shows the ranges of energy.
3. Visible light is visible in plant photosynthesis while other forms of electromagnetic radiation are not because visible radiation can energize the electrons is chemical bonds, thus delivering the energy necessary for reactions.
4. a. Infrared, visible, and ultraviolet
b. Infrared radiation warms living things, visible reactions energize electrons, and ultraviolet radiation kills bacteria and destroys viruses.
5. Ultraviolet light is effective for this use because UV-C photons can break covalent bonds and leads to a chemical change in the materials exposed, and it also kills bacteria that damage other living things. On the other hand, visible light is not effective because it does not possess great enough energy.
6. -Infrared reactions can be absorbed by greenhouse gases, which reradiates back to earth. 90% of visible radiation travels to earth’s surface.
-UV-C radiation is absorbed in the stratosphere before reaching earth’s surface.
-Most UV-A and UV_B radiation is absorbed by the ozone layer.
7. Main effects of the solar radiation that reaches Earth's surface are that more greenhouse gases cause more infrared radiation, resulting in more energy reradiated on earths surface, and a hotter earth.
8. a. Asphalt warms up more when directly exposed to sunlight because when solar radiation reflects and illuminates it back into space. Lake water also reflects light, but it absorbs and stores heat.
b. Water acts as a greenhouse gas and absorbs infrared light, but asphalt directly reflects light sources back to space.
No comments:
Post a Comment