Rainbow ?'s?

Question

here are a listof questions plz answer as many as u kno:

1) wat shape is a rainbow?

2) How does a rainbow form?

3) how does a rainbow have colors?

sry these might be hard to explain thx 4 the answers.

Answer 1

rainbows are arcs of coloured light formed when the Suns rays are reflected and refracted (bent) by drops of water in the air - falling rain or spray. the colours in rainbows are red, orange, yellow, green, blue, indigo and violet. a rainbow with red on the outside and violet on the inside is called a primary bow. sometimes, the light is reflected twice and the colours are reversed in a secondary bow.  

only half of a rainbow is visible, the lower half being cut off by the ground. a complete circle can be seen from an aeroplane.