Answer: cause Snow, ice, and clouds have high albedos (typically from 0.7 to 0.9) and reflect more energy than they absorb. Earth's average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. ... Image courtesy of NASA Earth Observatory.Light-colored materials can be used in warmer climates to keep houses cool. White roofs, for instance, reflect most of the light energy that strikes them. Light-colored curtains can also be used to reflect rays of sunlight when the Sun is at its hottest.
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