Question

iv. Match the column : 1x5=5 Left column Right column a) Oxidation of iron 1) Reaction due to light b) Photosynthesis 2) Reflection and refraction c) Mirage 3) Rusting d) Image 4) Radiation e) Heat coming to earth from sun 5) Total internal reflection​

Answer 1

Answer:

Once the sun’s energy reaches earth, it is intercepted first by the atmosphere. A small part of the sun’s energy is directly absorbed, particularly by certain gases such as ozone and water vapor.

Some of the sun’s energy is reflected back to space by clouds and the earth’s surface.

heat-budget schematic model

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Most of the radiation, however, is absorbed by the earth’s surface. When the radiation is absorbed by a substance, the atoms in the substance move faster and the substance becomes warm to the touch. The absorbed energy is transformed into heat energy. This heat energy plays an important role in regulating the temperature of the earth’s crust, surface waters, and lower atmosphere.

Every surface on earth absorbs and reflects energy at varying degrees, based on its color and texture. Dark-colored objects absorb more visible radiation; light-colored objects reflect more visible radiation. Shiny or smooth objects reflect more, while dull or rough objects absorb more. Differences in reflection impact temperature, weather, and climate.