Question

Give reasons for the following:
a) The stars appear to twinkle.
b) The colour of ocean is blue.
c) The colour of sky in the space is black​

Answer 1

Answer:

ANSWER

 

Stars twinkle because-

1) Of the turbulence's in our atmosphere like presence of wind, various gases molecule, different temperature region etc.

Advanced sunset and delayed sunrise-

1) Due to atmospheric refraction of the light emitted by the sun.

Blue color of sky-

1) As per fundamental colors of R(red) G(green) B(blue) , the color blue has the shortest wavelength thus scatters in all  direction by the molecules present in the atmosphere thus making the color of sky blue.

Reddish colour of sky during sunrise and sunset-

1)The sunlight consists of seven colors (VIBGYOR) out of which only the color red does not scatters totally, because the intensity of the color red is higher than the rest of VIBGYOR color, hence making the only color visible to human eyes.    

Explanation:

hope it is help ful

Answer 2

Answer:

a) the apparent position of star changes due to changes in atmospheric refractive index and change in temperature. due to these changes the brightness of the star keeps on changing and the star appears to be twinkling.

b) The light rays coming from the sun gets reflected by the ocean water and the image of sky forms in the water which is blue