Friday, January 30, 2015
YOLO COUNTY NEWS
99 CENTS

Explorit: Eggcellent geodes in the kitchen lab

By
From page A5 | May 23, 2014 |

Easter may have come and gone, but there’s still plenty of colorful fun you can have with some eggs this spring. Try this egg geode activity to practice the scientific method, make something beautiful and learn a little something about eggs in the process.

You will need: about a dozen raw eggs, an egg carton, warm water, a table knife, a spoon, food coloring, rock salt, sea salt and borax. We’re going to experiment with different substances to see which grow the best crystals inside an egg.

First, prepare your eggs. Tap the top of a raw egg shell a few times with the table knife to open the shell. Empty the egg out. You can save the yolk and white to cook with later. Then gently scoop out the egg membrane left inside the shell. We don’t want it to get in the way of our growing crystals.

When all your eggs are empty and ready for their crystals, set them open side up in the egg carton to hold them in place. You might want to cut the lid off your egg carton so you can watch your crystals’ growth.

Now, we’ll mix our first crystal solution. Add some rock salt one spoonful at a time to a half-cup of warm water. Stir it thoroughly so it dissolves in the water.

Keep adding rock salt until it doesn’t dissolve any more. Then add some food coloring and pour the mixture into a couple of eggs. You should have enough for two or three eggs.

For our second crystal solution, add some sea salt one spoonful at a time to a half-cup of warm water and stir until it dissolves. Add a different color of food coloring and then add this mixture to two or three different eggs.

And finally, make a third mixture with borax and warm water. Give it a third color and add it to the remaining eggs. You can also try other substances to make even more eggs, like sugar or baking soda. What can you think of to add to a crystal solution?

Now we wait and watch. It might take up to five days for crystals to finish growing, but you should see some changes within the first day. Make sure not to move your eggs or touch them so you don’t disturb your crystals.

Observe differences among your crystal solutions. Which one grows the biggest crystals? Which crystals grew the fastest?

Did all the crystals grow inside the egg? If not, why not? What happened? What does this tell you about an egg’s shell? What do you think would have happened if we’d left the membrane inside the egg? Try repeating the experiment to find out!

————

Explorit’s coming events:

Explorit’s “Beautiful World: Science and Art” exhibition is open to the public from 1 to 5 p.m. every Wednesday, Saturday and Sunday,  and every Friday from 3 to 6 p.m. Admission is $5 per person; Explorit members, teachers and children 2 and under are free.

Birthday parties are back at Explorit. Call 530-756-0191 for more information or to book your party.

Summer Science Camp is coming, and registration is open now. Visit www.explorit.org for all the details or to register.

Save the date: Our exciting “Final Blast Festival and Chemistry Show” is planned for Sunday, Sept. 7. This event celebrates the end of our Summer Science Camp season and is fun way to start the new school year.

— Explorit Science Center is at 3141 Fifth St. For more information, call 530-756-0191 or visit www.explorit.org, or “like” Explorit on Facebook at www.facebook.com/explorit.fb.

Comments

comments

  • Recent Posts

  • Enter your email address to subscribe to this newspaper and receive notifications of new articles by email.

  • .

    News

    Town hall focuses on Coordinated Care Initiative

    By Anne Ternus-Bellamy | From Page: A1

     
    Parents will get tools to help their children thrive in school

    By Enterprise staff | From Page: A1 | Gallery

    Need a new best friend?

    By Enterprise staff | From Page: A2 | Gallery

     
    Great Chefs Program will feature Mulvaney

    By Special to The Enterprise | From Page: A3

    Free tax preparation service begins Monday

    By Special to The Enterprise | From Page: A3

     
    Walkers head out three times weekly

    By Enterprise staff | From Page: A3Comments are off for this post

    No bare bottoms, thanks to CommuniCare’s Diaper Drive

    By Special to The Enterprise | From Page: A3

     
    Vote for your favorites in Readers’ Choice poll

    By Enterprise staff | From Page: A3

    Still time to purchase tickets for DHS Cabaret

    By Enterprise staff | From Page: A3

     
    Storyteller relies on nature as his subject on Saturday

    By Enterprise staff | From Page: A3

    All voices welcome at sing-along Wednesday

    By Enterprise staff | From Page: A3

     
    February science fun set at Explorit

    By Lisa Justice | From Page: A6 | Gallery

    Take a photo tour of Cuba at Flyway Nights talk

    By Enterprise staff | From Page: A6 | Gallery

     
    .

    Forum

    Tom Meyer cartoon

    By Debbie Davis | From Page: A10

     
    A ‘new deal’ for the WPA building

    By Special to The Enterprise | From Page: A10

     
    Protect root zone to save trees

    By Letters to the Editor | From Page: A10

    Weigh quality of life, density

    By Letters to the Editor | From Page: A10

     
    Olive expert joins St. James event

    By Letters to the Editor | From Page: A10

    We’re grateful for bingo proceeds

    By Letters to the Editor | From Page: A10

     
    .

    Sports

    UCD has another tough football schedule in 2015

    By Enterprise staff | From Page: B1

     
    Gould’s influence felt mightily in recent Super Bowls

    By Bruce Gallaudet | From Page: B1

    Mustangs hold off UCD women

    By Enterprise staff | From Page: B1 | Gallery

     
    UCD men set new school D-I era win record

    By Bruce Gallaudet | From Page: B1 | Gallery

    Sharks double up Ducks

    By The Associated Press | From Page: B2 | Gallery

     
    Sports briefs: Watney, Woods start slow at TPC Scottsdale

    By Enterprise staff | From Page: B2

    Recall that first Aggie TV game, national title?

    By Bruce Gallaudet | From Page: B8 | Gallery

     
    .

    Features

    .

    Arts

    ‘Artist’s Connection’ launches on DCTV

    By Special to The Enterprise | From Page: A11

     
    ‘Song of the Sea’ is an enchanting fable

    By Derrick Bang | From Page: A11 | Gallery

     
    Gross’ paintings highlight a slice of Northern California

    By Enterprise staff | From Page: A12 | Gallery

    February show at YoloArts’ Gallery 625 is ‘Food for Thought’

    By Special to The Enterprise | From Page: A12 | Gallery

     
    .

    Business

    .

    Obituaries

    .

    Comics

    Comics: Friday, January 30, 2015

    By Creator | From Page: A9