Book 3, Question 32 · Video
Why Does Static Make Hair Stick Up?
Rubbing moves electrons from one thing to another. That leaves things with an electric charge. Hairs with the same charge push away from each other and from your head, so hair stan
Read the full answer →What Crafty Clover says in this video
Intro
Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why does static make hair stick up?
The Big Idea
Rubbing moves electrons from one thing to another. That leaves things with an electric charge. Hairs with the same charge push away from each other and from your head, so hair stands up! Humid air leaks charge away, so static is weaker on damp days.
Step 1
Step one: rub. When a balloon or a hat rubs your hair, electrons hop from one to the other. Electrons are tiny charged particles. Packing peanuts, socks from the dryer, and even lightning all start as static charge.
Step 2
Step two: the hair gets charged. Each strand ends up with the same kind of charge. Same charges repel, so the hairs push apart. A balloon rubbed on a sweater picks up extra electrons, and then it can cling to a wall.
Step 3
Step three: they stand up, and then zap. Each strand leans away from the others, and stands up. Touch a doorknob, and the charge jumps, so you feel a tiny zap. The charge finds a path to escape, and that's the zap.
A Closer Look
Let's take a closer look at static! When a balloon rubs your hair, electrons move between them. That leaves every hair with the same kind of charge. And the charged hairs push away from each other and stand up. Opposite charges attract; same charges repel! It helps to picture the charges pushing each other.
Quick Facts
Quick facts! Opposite charges attract, and same charges repel. Dry winter air lets the charge stay, instead of leaking away, so static is worse in winter. A balloon rubbed on a sweater can stick to a wall. And the zap is small, but it can be surprising. Static is harmless, but it can be funny.
Think Like a Scientist
Now, think like a scientist! Rub a balloon on your shirt. Hold it near tiny bits of paper. Do the paper bits jump? Why do you think so? Watch what happens closely.
Outro
Static happens when charges build up and push apart. That's electric science on your head! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!