Science activity
Static Electricity Show
Make your hair stand up with a balloon! Rub a balloon on your head and watch it stick to the wall. Discover the invisible force of static electricity.
Materials and setup
- balloons
- tissue paper
- wool sweater or fabric
- salt
- pepper
- aluminum foil
- glass jar
- paper clip
- comb
How this changes by age
Pre-K (ages 3–4)
Make your hair stand up with a balloon! Rub a balloon on your head and watch it stick to the wall. Discover the invisible force of static electricity.
Steps
- Blow up a balloon and rub it on your hair for 10 seconds. Hold it above your head — hair stands up!
- Press the balloon against the wall. It sticks! 'An invisible force called static electricity is holding it there.'
- Tear tissue paper into tiny pieces. Hold the rubbed balloon close — the pieces jump up and stick to it!
- Try rubbing the balloon on a wool sweater instead of hair. Does it still work?
- Talk about what happened: 'Rubbing moves tiny invisible charges from your hair to the balloon, and those charges pull things toward the balloon!'
- Tell a grown-up one thing that surprised you.
Learning objectives
- Observe that rubbing creates a force that attracts lightweight objects
- Understand that static electricity is an invisible pulling force
- Experiment with different materials to create static charge
Kindergarten (ages 5–6)
Explore static electricity with multiple experiments: make objects attract and repel, bend water with a charged balloon, and discover which materials create the best charge.
Steps
- Rub a balloon on wool and test what it attracts: tissue paper bits, salt, pepper, small pieces of foil, and puffed rice cereal. Record which items it attracts.
- Bend water with static: turn on a thin stream of water from a faucet. Hold a charged balloon near it — the water bends toward the balloon!
- Test attract vs repel: charge two balloons on your hair. Hold them near each other — they push apart! 'Same charges repel, different charges attract.'
- Test different charging materials: rub the balloon on wool, silk, cotton, and your hair. Which creates the strongest charge? (Test by how long the balloon sticks to a wall.)
- Create a static electricity show: demonstrate 3 different tricks for a family member and explain each one.
- Tell a grown-up one thing that surprised you.
Learning objectives
- Demonstrate that charged objects can attract and repel other objects
- Compare how different materials affect static charge strength
- Observe that like charges repel and opposite charges attract
Early elementary (ages 6–8)
Investigate static electricity scientifically: learn about positive and negative charges, test the triboelectric series, build an electroscope to detect charge, and explain the physics behind lightning.
Steps
- Research: atoms have positive protons and negative electrons. Rubbing transfers electrons from one material to another, creating a charge imbalance. The material that gains electrons becomes negative; the one that loses becomes positive.
- Build an electroscope (charge detector): hang two thin strips of aluminum foil from a paper clip inside a glass jar. Touch a charged balloon to the paper clip — the foil strips spread apart because they both get the same charge and repel!
- Test the triboelectric series: rub different material pairs together (glass + silk, rubber + fur, plastic + wool). Test each with your electroscope. Rank materials from most positive to most negative.
- Investigate: does humidity affect static electricity? Test your experiments on a dry day vs. after running a humidifier. Why does moisture reduce static?
- Research lightning: it is a massive static discharge. Explain how charge builds up in clouds and what causes the spark to jump to the ground.
- Write a report explaining: What is static electricity? How do charges move between materials? Why does lightning happen?
- In one sentence, tell a parent or sibling what surprised you today.
Learning objectives
- Explain static electricity in terms of electron transfer between materials
- Build and use an electroscope to detect and compare electric charges
- Apply the triboelectric series to predict which materials will become charged
Upper elementary (ages 8–10)
Conduct advanced electrostatics experiments: quantify charge strength, explore Coulomb's law conceptually, build a Van de Graaff-style generator, and research electrostatic applications in technology.
Steps
- Build a sensitive electroscope using a glass jar, copper wire, and two thin aluminum foil leaves. Calibrate it by testing with known charged materials and measuring the foil separation angle with a protractor.
- Investigate Coulomb's law conceptually: charge a balloon and measure how close you must bring it to a pile of paper bits before they jump. Does doubling the distance require more charge? This shows that electrostatic force decreases with distance.
- Build a simple electrostatic generator: tape a rubber band belt around two empty cans (one on top, one on bottom). Crank the belt by hand to transfer charge to the top can. Test for charge with your electroscope.
- Research electrostatic applications: photocopiers (charge and toner), air purifiers (charged plates trap particles), spray painting (charged paint droplets), and electrostatic precipitators in smokestacks.
- Investigate grounding and discharge: why do you get shocked touching a doorknob after walking on carpet? How do lightning rods protect buildings? Explain the concept of grounding.
- Write a comprehensive electrostatics report: cover electron transfer, Coulomb's law, your generator build, grounding and discharge, and real-world applications with diagrams.
- In one sentence, tell a parent or sibling what surprised you today.
Learning objectives
- Quantify electrostatic force using an electroscope and angular measurements
- Build a simple electrostatic generator and explain the principle of charge transfer
- Research and explain real-world applications of electrostatic principles
Safety and evidence note
Read the full activity before beginning. An adult should supervise tools, heat, food, outdoor work, movement, and experiments as appropriate. Completion records that the activity was done; the child’s explanation, work sample, photo, or demonstration is stronger evidence of learning than a completion check alone.
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