Question:
It's so strong, it does not break,
It's so powerful, it penetrates a lake,
Sometimes it's weak as a twig left out in the sun,
It's so wonderful it gives us the power to have fun.
What is it?
Answer:
Light.
Try another Brain Teaser:
A thief was brought before a king to receive his punishment. The king, feeling merciful, asked the thief how he would like to die. The thief told him, and the king let him go. How did the thief wish to die?