11l Consider the atmospheric phenomena listed below. (i) Sun Pillars (ii) Haloes
ID: 3307473 • Letter: 1
Question
11l Consider the atmospheric phenomena listed below. (i) Sun Pillars (ii) Haloes (iii) Sun Dogs (iv) Primary Rainbows (v) Secondary Rainbows (vi) Crepuscular Rays (vii) Clouds If the freezing point of water were to drop so that water no longer froze in our atmosphere, which of the phenomena above would be affected? 121 All of the questions below concern Haloes and Primary Rainbows. (a) Do these two phenomena both involve refraction in their production? (b) Do these two phenomena both involve reflection in their production? (c) Do these two phenomena display the same color order? (d) Describe how your answers to parts (a) and (b) above naturally explain your answer to part (c).Explanation / Answer
Ans: 1) If the atmospheric pressure decreases the freezing point of water decreases and also the air will expands and the energy expensed will cause the air to cool..as the air cools down the amount of moist that can hold by air will reduce. Saturation, therefore, is reached through evaporation and condensation, respectively. When saturation occurs, moisture becomes visible water droplets in the form of fog and clouds.
So, the answer is clouds...
2)a&b) The haloes and primary rainbows involves both refraction and reflection of sun light.
Haloes are formed by tiny ice crystals present in the atmosphere. Primary rainbows are fomed by water droplets .
c) No, the two phenomena display different color orders..
d) A Halo is made by ice crystals so each color is refracted a small set of specific angles, so you see those colors are different places in the sky. Exactly where these are depends on the type of crystals, and how they are oriented.
In rainbow the light refracted through a continous range of angles on either side of the sun.
These refracted light interefere with light reflected from back of the water dropets or ice crystals to display colors. So the oreder of colors will be different
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