Monday, November 30, 2009

Surfin' Safari

My Aunt Juli took me to the Wisconsin Dells and we went to an indoor waterpark called Kalahari. It was a lot of fun and had so many thrilling rides. I decided to try some body surfing. I was the youngest person in line, but I still wanted to do it. On my first try, I wiped out big time----check out the video:




On my second try, I did GREAT!!! I rode for a long, long time. It was so much fun!!! Check it out:

Monday, November 23, 2009

Walking With Dinosaurs

My mom and I went to see Walking With Dinosaurs at the Cedar Park Center. The dinosaurs were very realistic and were life-size. Some of the dinosaurs we got to see were Allosaurus, Utahraptor, Ankylosaurus, Brachiosaurus, Plateosaurus, Stegasaurus, Plateosaurus, and Tyrannosaurus Rex. The T-Rex was by far my favorite. The show was a little scary at times and very loud, but I really enjoyed it. I would definitely like to see it again.


Friday, November 13, 2009

Holey Leakproof Bag of Water!!!!!!!!!!!

Materials Needed:
  • ziplock bag
  • pencils
  • pencil sharpener
  • water
  • food coloring
Step 1: Sharpen your pencils with a pencil sharpener. In order for this experiment to work, the pencil points need to be very sharp.






Step 2: Fill the ziplock bag halfway full of water.



Step 3: For contrast, add some drops of food coloring. Seal the bag.



Step 4: Take sharp pencils and poke them into the bag of water, using a circular motion. Do you see any leaks? NOPE!!!


Step 5: Slowly remove pencils and observe what happens. Now you have some leaks!



The Science behind the experiment:

Zip Lock bags are made from plastic. Plastic is made of polymers which are long chains of molecules cross linked together. Polymers are what makes plastic bags and balloons stretchy. When we poke through the zip lock bag with pencils the polymers are pushed aside but remain bonded by the cross-links - keeping the water inside. The polymers re-seal around the pencil. Amazing!