How do Thunderstorms form?

What exactly is Thunder? What's louder, Thunder or Lightning? How can you tell how far away Lightning is striking? After the episode, check out today's SMARTYQUIZ email to test how well you smarted! If you're not getting our free SMARTYQUIZ email, you're really missing out on a great opportunity to lock in the learning from Who Smarted?! It's our gift to you, FREE, 3 times a week! Sign up here. For free home activities sign-up at www.WhoSmarted.com