Boogie Woogie Raisins: Kids Science

raisins

Have you ever seen raisins dance the tango or spaghetti noodles do the hula? Follow the directions below to find out how to create your own performing raisins. Believe it or not, you don’t even need music.

Materials: carbonated water or clear carbonated soda, a large clear jar or cup, raisins, popcorn kernels, uncooked spaghetti noodles or rice, food coloring (optional)

To Do:

Pour the carbonated soda into the cup until it is approximately ¾ full.

Drop five to six raisins into the cup. What happens to the raisins?Can you think of a way to make the raisins dance faster? Experiment with different types of carbonated beverages or different sizes of raisins. You can even create your own carbonation by adding a spoonful of baking soda to a glass of vinegar. The baking soda reacts with the vinegar to produce carbon dioxide gas, the same type of gas in carbonated sodas.

Now Try This:

Continue to watch the raisins closely. Do you notice anything forming onthe surface of the raisins?

After a minute or two, the raisins should begin to rise to the surface of the soda. What happens to the raisins when they get to the top of the liquid?

Try adding a few popcorn kernels, grains of rice, or small pieces of uncooked spaghetti (the angel hair variety works best). Do you get the same results? For a more colorful effect, you can add a few drops of food coloring to the cup of soda.

Can you think of a way to make the raisins dance faster? Experiment with different types of carbonated beverages or different sizes of raisins. You can even create your own carbonation by adding a spoonful of baking soda to a glass of vinegar. The baking soda reacts with the vinegar to produce carbon dioxide gas, the same type of gas in carbonated sodas.

What’s Going On?

Raisins are slightly denser than soda, so when you first drop them into the liquid they sink to the bottom. Soon, however, the carbon dioxide gas bubbles in the beverage begin to attach themselves to the rough surfaces of raisins, making them more buoyant. Eventually enough bubbles attach themselves to the raisins that the density of the raisins and the gas bubbles is less than the density of the soda. This causes the raisins to float toward the top of the soda. The bubbles act like tiny life preservers. Just as a life jacket allows a person float in the water, the gas bubbles allow the raisins to float in the soda. When the raisins get to the surface, most of the bubbles burst, causing the raisin to sink back down to the bottom where the process starts all over again.

Debbie DeRoma is the educational specialist for the Reuben H. Fleet Science Center.

Make a Bug Vacuum

Make a Bug Vacuum

Capture insects with ease using this simple DIY bug vacuum kids can make at home.Scientists capture bugs for study using a mouth-powered vacuum, called an aspirator or a pooter. Swallowing specimens i . . .

Read more

Plant a Patio Garden

Plant a Patio Garden

No Yard? Try a Patio Garden with Kids Whether you live in a high-rise apartment or a house with limited green space, your family can reap the benefits of gardening together. Gardening teaches kids . . .

Read more

Warty Licorice

Warty Licorice

Can you make a smooth piece of licorice grow warts? Do this science experiment with the kids to find out!Time: 5 minutesSkill level: Get a grown-upSuppliesTwizzlers licorice twists (the Pull-n-Peel . . .

Read more

How to Make a Box Oven

How to Make a Box Oven

There are several different types of box ovens you can make. These instructions are for a box oven with a hinged lid. If you use the sturdy materials recommended and take good care of it, you should b . . .

Read more

Build a Rocket

Build a Rocket

Imagine sweeping the dust from a giant rock formation to uncover an ancient dinosaur fossil, or peering through your backyard telescope to identify a hazy comet as it streaks across the sky. Sound e . . .

Read more

Straw Gliders

Straw Gliders

The next time you visit the beaches near Torrey Pines or La Jolla, be sure to look up at the sky. You may notice many colorful gliders soaring high above the ground. These gliders provide the ultima . . .

Read more

Acid Dissolving Test

Acid Dissolving Test

Here’s an easy, kid-friendly science project you can do at home!Time: 1 hourSkill level: MediumYour digestive system uses acid. Does that mean that acid dissolves candy?What you need:Candy that di . . .

Read more

Candy Chromatography

Candy Chromatography

Many science experiments involve candy. Follow the directions below to find out how you can use science to determine how candies get their colors. Materials:Coffee filtersClear jars or cupsPencilT . . .

Read more

Pizza Box Solar Cooker: Kids Science

Pizza Box Solar Cooker: Kids Science

Few things are more essential to a summer camping trip than marshmallows, chocolate and graham crackers. Sure, you need a tent and a sleeping bag, but a campfire without s’mores just wouldn’t be . . .

Read more

Cooking with the Sun: Science with Kids

Cooking with the Sun: Science with Kids

Did you know that San Diego averages more than 260 sunny or mostly sunny days per year? All of this solar energy warms the air and ground and contributes to San Diego’s great climate. However ener . . .

Read more

Boogie Woogie Raisins: Kids Science

Boogie Woogie Raisins: Kids Science

Have you ever seen raisins dance the tango or spaghetti noodles do the hula? Follow the directions below to find out how to create your own performing raisins. Believe it or not, you don’t even ne . . .

Read more

Kitchen Chemistry Science for Kids

Kitchen Chemistry Science for Kids

While you are enjoying your hotdog or hamburger this summer, take a closer look at the bun. Do you notice tiny holes or air spaces in the bread? Where did these holes come from? You might not believe . . .

Read more

Bubble Science

Bubble Science

When most people think about the month of March they probably imagine the color green, shamrocks or other symbols of St. Patrick’s Day. But did you know that National Bubble Week also occurs in Ma . . .

Read more

Bouncy Ball Science

Bouncy Ball Science

Take me out to the ballgame! March is the time of year when baseball players head to spring training to practice pitching, hitting and fielding. If baseball is not your thing, you can have fun by ma . . .

Read more

Soda Bottle Boats

Soda Bottle Boats

Did you know there are more than 900,000 boats in the state of California? If you take a look around San Diego County on any given day you can spot many different types of boats. You might notice sail . . .

Read more

San Diego Family Magazine Logo

Be Family Informed – Sign up for our Newsletters below!