Long Riddles and Answers

Question: Different lights make me strange,
for each one my size will change.

What am I?

Question: An iron horse with a tail of flax. The more the horse gallops, the longer his tail becomes.

Question: I have curly hair I am a feline I am long I My eyes are shaped like a line. What am I?

Question: There are two mothers and two daughters. They go to a restaurant and ask for 3 chairs. Why?

Question: I'm 10 years old my brothers half my age now I'm 100 years old how old is my brother now?