Some one help me in gerneral science please!!!!!!!!!!?

Question

plase answer thease in short answers please and thnak you

1.One interface that light can pass through is an air/glass interface. What are two other combinations of interfaces that light might pass through? Be sure to specify both of the media light travels through for your examples.

2.What three changes to light take place when it passes through an interface?

3.Where do you, the Sun, and the rain have to be in relation to one another in order to see a rainbow?

Answer 1

1.  pretty much any combination of vacuum, air, or glass.

2.  direction, intensity, and wavelength

3.  see: http://en.wikipedia.org/wiki/Rainbow#Sci...  Basically, you and the Sun need to form a 42º angle whose apex is where the water droplets are.