### Materials Needed

6 rubber bands; 10 marbles of the same size (larger ones work better); 5 jumbo paper clips; clear tape

### Procedure

1. Link the rubber bands together with the paper clips to make a long "string" of rubber bands and clips.

2. Place a marble on either side of the first paper clip and tape the marbles together with the paper clip in between to secure the marbles. Repeat this with each paper clip.

3. Hold each end of the "string" of rubber bands and stretch it out across a table or floor. Move one end back and forth, while holding the other end still. What happens? Try moving the end faster or slower. What happens? Does the pattern change? Try moving one end up and down. What happens?

### Experience

Now, explore! Try adding more rubber bands and marble sets. What happens? What patterns of movement can you make? How many different types of waves can you make? What happens when both students move their ends at the same time?

### What's Going On

The rubber bands move in a pattern known as waves. Waves are caused by disturbing objects at rest which produces movement. This form of movement is very common in our world: ocean waves, instrument strings, light and sound just to name a few. Sometimes waves produce an oscillation, a repetitive and rhythmic movement, like in the pendulum of clocks. Waves usually consist of three parts: crests (high points), troughs (low points) and nodes (half-way points between crests and troughs). Where are the crests, troughs and nodes in your system? How many of each can you make in your system?

### Ohio Content Standards

Physical Science: `K.4, K.5, 8.4, 8.5`
OSIC Codes: ```Y2002.CSC.S03.GKG-02.BB.LKG.I04; Y2002.CSC.S03.GKG-02.BB.LKG.I05; Y2002.CSC.S03.G06-08.BD.L08.I04; Y2002.CSC.S03.G06-08.BD.L08.I05```
• Hits: 10362

## Top Classroom Activities

• ### Buoyant Bubble

A sphere is a very special shape in nature. Liquids form into spheres due to internal forces. Investigate density and shape.
Buoyant Bubble
• ### Cabbage Patch Chemistry

An indicator is a substance that can be used to determine pH of a substance. Make your own indicator using red cabbage leaves and test household items.
Cabbage Patch Chemistry
• ### What's the Buzz?

Can a rubber band sound like a bee? How does changing the speed of a vibrating object affect the sound of the vibration?
What's the Buzz?
• ### Hover Cup

Can you make a hovercraft from a paper cup? Explore how air flow can minimize friction and cause an object to move.
Hover Cup
• ### Catapult

Catapults are great for demonstrating transfer of energy. Tension in the catapult will cause an object to travel very far.
Catapult
• ### Sidewalk Chalk

Chalk is used in many applications and industries... more familiarly in the classroom. Make your own chalk and learn the science behind this incredible product.
Sidewalk Chalk
• ### Rock Candy

Create a crystal pattern around a string that is also a tasty treat!

Rock Candy