Moment of Science: Earthquakes

Moment of Science: Earthquakes


The Earth is always moving- even the ground beneath your feet!  Luckily for us, geologists estimate the ground moves as fast as your hair grows, which is why you don’t really feel it. But when you do feel the ground shaking we call that an earthquake.

The Earth is made up of layers. What we commonly think of as the ground is the crust of the Earth – the outermost layer made up of solid rocky material. However, the crust is not one solid piece, but instead it’s broken into several pieces called tectonic plates. These puzzle-like pieces can push against each other, pull away from each other, slide across from each other, or even get stuck.

Sometimes two different plates can’t get past each other, but they keep trying to move. Over time, each movement causes pressure to build up along the fault, the area where two plates meet. Eventually, when the fault can’t hold any more pressure or stress, the plates will move – causing an earthquake.

Earthquakes are natural events that happen inside the Earth, so they have nothing to do with weather. Geologists do not have the science or technology to predict earthquakes, but there are some early warning systems around the world – alerting folks that an earthquake has struck and is on its way to them. In an earthquake-prone region like Southern California, it’s always a good idea to know what to do in case of an earthquake. Join the Discovery Cube and millions of others around the world in an annual earthquake readiness drill called “The Great Shakeout” on October 19, 2017 at 10:19 am.



  • Small Marshmallows (any color)
  • Large Marshmallows
  • Round Toothpicks
  • Regular Wooden Ruler
  • Masking Tape Roll
  • Long Rubber Bands
  • Foam Boards or Binder Covers
  • Whiffle or Rubber Balls
  • Sheet of Bubble Wrap- 8 ½ x 11
  • Gallon Size Zip Bag- (fill with whiffle balls)


Step 1: Use toothpicks and marshmallows to build an earthquake safe tower at least 12 inches tall.

Step 2:  Place a sheet of bubble wrap on top of one of the foam boards or binder covers.

Step 3: Place a bag filled with a few whiffle or rubber balls on top of the second foam board. Make sure the bag stays closed.

Step 4: Use masking tape to secure a ruler on the second foam board.

Step 5: Place a second foam board over the bag of whiffle balls with the ruler facing up.

Step 6: Place a rubber band at each end of the foam boards to keep everything together.

Step 7: Test the strength of your tower using your shake table. Make sure to hold the bottom of the shake table during the testing.

Mary Tran: Bubblefest at Discovery Cube!

What child doesn’t love bubbles? Just in time for Spring Break, Bubblefest is back in Orange County, and they’re celebrating 20 years of all things bubbles. Now through April 10th at the Discovery Cube OC, families can roll around in water spheres, take a family photo being inside a bubble, learn the science of bubbles in the Bubble Lab, watch an exciting performance of the Mega Bubblefest Laser Show performed by Deni Yang, and more! There’s even a Cube Jr. Playground for the littles.

Discovery Cube Bubblefest Courtyard Bubble Wands Photo LetsPlayOC
Mega Bubblefest Laser Show
The laser show never gets old. This is our third year seeing the show, and it’s still fun to watch. Bubble Artist, Deni Yang, has been doing it for over 20 years along with his family, and they even hold the Guinness Book of World Record for longest soap bubble wall. Deni does a great job captivating everyone in the audience especially the little ones. The Snow Story about his niece is super cute, and Deni creates all kinds of bubbles including smoke bubbles, square bubbles, and putting two children in a bubble. Toward the end of the show, we were in a bubble blizzard which lasts several minutes. It’s pretty funny, and we couldn’t see anything until it ended.

Discovery Cube Bubblefest XX Laser Show Photo

My kids especially enjoyed the laser show, bubble wall, rolling around in the water spheres, racing through the obstacle challenge, and playing with bubble wands in the courtyard. My favorites are the laser show and the Me-in-a-Bubble photo. Please note that general admissions is required with Bubblefest tickets. I have some details for you below and an opportunity to for one lucky reader to win an annual family membership at the Discovery Cube. Good luck!

discovery cube bubblefest water spheres photo letsplayoc

Discovery Cube Bubblefest Obstacle Challenge Photo letsplayoc

Have fun,