plz tell these questions
Answers
Answer: 1. The stars twinkle in the night sky because of the effects of our atmosphere. When starlight enters our atmosphere it is affected by winds in the atmosphere and by areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground.
2. The answer is the planets actually do twinkle. In fact, everything outside our atmosphere, anything we're looking at outside your atmosphere does twinkle due to the effect that we discussed. However, we can't notice the twinkling effect of the planets because planets appear bigger in size to us.
3.It is due to scattering of light. Light near the horizon passes thicker layers of air and larger distance of atmosphere hence, most of the blue light is scattered away and longer wavelengths reach our eyes giving rise to reddish colour of sun.
4.The sky appears dark instead of blue to an astronaut because there is no atmosphere in the outer space that can scatter the sunlight. As the sunlight is not scattered, no scattered light reach the eyes of the astronauts and the sky appears black to them.
Answer:
1.Stars have their own light. They appear to twinkle in night due to air currents and other disturbances in the atmosphere