LCTONB(3marks)Give reasons:Planets do not twinkle) Sky appear dark ins

1.	LCTONB(3marks)Give reasons:Planets do not twinkle) Sky appear dark instead of blue to an astronaut.cl Danger signals are red in colour
Answer» a)The planets are much closer to the earth, and are thus seen as extended sources. If we consider a planet as a collection of a large number of point-sized sources of light, the total variation in the amount of light entering our eye from all the individual point-sized sources will average out to zero, thereby nullifying the twinkling effect. Hence, the planets do not twinkle. b)Thesky appears dark instead of blue to anastronautbecause thereisno atmosphere in the outer space that can scatter the sunlight. As the sunlightisnot scattered, no scattered light reach the eyes of theastronauts and thesky appears blackto them. thank u .last answer pls?

LCTONB(3marks)Give reasons:Planets do not twinkle) Sky appear dark instead of blue to an astronaut.cl Danger signals are red in colour

Answer»

a)The planets are much closer to the earth, and are thus seen as extended sources. If we consider a planet as a collection of a large number of point-sized sources of light, the total variation in the amount of light entering our eye from all the individual point-sized sources will average out to zero, thereby nullifying the twinkling effect. Hence, the planets do not twinkle.

b)Thesky appears dark instead of blue to anastronautbecause thereisno atmosphere in the outer space that can scatter the sunlight. As the sunlightisnot scattered, no scattered light reach the eyes of theastronauts and thesky appears blackto them.

thank u .last answer pls?

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