12
Lesson 12 of 84 · Energy Transfer
ExperimentStatic Electricity
What You'll Learn
Static electricity builds up when objects gain or lose electrons through rubbing. Rubbing a balloon on your hair transfers electrons, making the balloon stick to a wall.
Key Words
- power
- electromagnetic
Materials Needed
- stopwatch
- pencils
- toy cars
- ramps
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
Steps
Step 1 — Read
Look at the vocabulary words and write a definition for each in your own words.
Step 2 — Do
Construct a catapult from popsicle sticks and rubber bands. Launch a marshmallow from different angles and measure the distance. Find the angle that gives the longest launch.
Step 3 — Observe
Draw a detailed diagram of what you observe.
Step 4 — Record
Write a conclusion: what did your results show? Did they match your prediction?
Check Your Understanding
Question 1
1 of 3What happens when you rub a balloon on your hair?