Simple answer: Because clouds are wet.
Expanded answer: Rainbows are formed by the refraction (bending) of light, as it bends it is split into all the frequency's that make up that beam of light. as clouds are made of water vapour when they cool and become more dense and light can refract the same way it would through mist, light rain or spray
sometimes when you spray water
In order to see a rainbow, the sun must be shining in one part of the sky, and the water droplets in a cloud or in falling rain must be in the opposite part of the sky.
Sometimes in the shape of a person or a tree or animal.
Cumulonimbus is a type of cloud, very dense and fluffy, sometimes pure white or they can be dark and grey, heavy rain and thunderstorms are usually associated with this cloud.
rain, storm, lightning, thunder, and sometimes windy
nothing
Rainbow Dash lives in a cloud home above Ponyville.
it is the landform that has a rainbow and it is reflected to the sun's light and cloud's brisky fog
No there is only mew
Sometimes there is a rainbow after a rainstorm.
The rainbow appears in genesis, after the Flood.Additional Answer:Genesis 9:13New King James Version (NKJV) 13 I set My rainbow in the cloud, and it shall be for the sign of the covenant between Me and the earth.
sometimes when you spray water
you press the button on the level before the rainbow cloud and pro. oak will say something about Pokemon signs , then you have to take pictures of the objects that look like Pokemon , i belive theres one in all the levels
A rainbow is a circle if viewed from the air, and it is sometimes not even that, if it is faint enough
It sometimes increases and sometimes decreases
a cloud is sometimes red orange or pink because of the way the sunlight goes through the layers of atmosphere.The light also has to go through the cloud and go a long way to get to your eyes.
If by that you mean a tornado with a rainbow near it then yes, sometimes rain falls very near a tornado, which can form a rainbow under the right conditions