Squigly Squigly's Brain Teasers

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:

What does it mean to "let the cat out of the bag'?

We have lots more puzzles to provide fun for your brain. Have fun solving these quiz questions. Choose from the following brain games: