Question

(2)
2.
Stars appear to twinkle because:
a) of atmospheric refraction
b) movement of air
e)
both (a) and (b)
d) none of these​

Answer 1

Answer:

a) of atmospheric refraction

Answer 2

Answer:

The movement of air (sometimes called turbulence) in the atmosphere of earth causes the starlight to get slightly bend as it travels from the distant star through the atmosphere down to us on ground. To our eyes this make the star seem twinkle