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Sunday, November 1, 2009

SCIENCE FAIR '09!

The day has come! September 1, 2009 was our scheduled date for the
Science On The Move science fair 2009 at Island City Mall, Tagbilaran City.
The day before, we were told that our meeting place will be at the Bus Terminal
in front of the new building at exactly 5 o'clock in the morning.
For sure, everyone was very excited especially the Freshmen
for that was their first time on a tour as a high school student.
Students arrived already. Some were still sleepy,
but there are also some who are energetic enough already.
Teenagers can't help but to make noise so the teachers made sure that
everyone is behaving well.
We have 3 buses occupied. Each bus was occupied by two sections
together with their respective teachers.
Our departure was approximately 6:00 in the morning.
Everyone have fun on our way to Tagbilaran.
On our bus, we prayed the rosary while on our way.

Opening of the Science Fair!

When we arrived at Island City Mall, it was almost lunch time. So first thing first, we went with our classmates or companion and ate lunch with them. Some ate at the fastfood or restaurant inside the mall and some also brought their own lunch with them. After our lunch, we were given time to wander around the mall while waiting for the program to start. When we were called by our teachers, we gather around the activity area ready for the program. We found ourselves comfortable sitting on the chairs.
When the program started, different person with high ranks started delivering out their speeches and thoughts for this said event. Some also sang for us to be entertained too.



After the program, we directly went at the parking lot of the mall wherein the exhibits were displayed. As you can see from the picture below, we were preparing to enter the mobile. But before that, we witnessed the cutting of the balloon as the sign of opening this science fair.

We formed a line and started to walk through and found ourselves inside the mobile fascinated by different exhibits that they prepared.

3-D Glasses



Different exhibits were there on the science mobile. One of these is 3D Glasses. We watched a video clip and we noticed how it differs from what we usually see on TV using 3D glasses. We held the 3-D glasses near our eyes (the blue glass on our right eye) and viewed the video clip through them.
So, what happened? The video clip is an anaglyph, a stereoscopic motion or still picture in which images are made up of two color layers, but offset with respect to each other to produce a depth effect.
The picture in the video clip contains two differently filtered colored images, one for each eye. The filters on the glasses allow only one image to enter each eye, and your brain fuses this into perception of a three-dimensional scene or composition.

Anti-Gravity Mirror

At first, we were very curious what a single mirror does in that science fair. We observed for a few minutes until a guy came up to us and explained what the mirror is for. He stood on the right side of the mirror and aligned his nose to the mirror’s edge. He positioned himself within the 45-degree angle with the mirror. We watched him as he lifted his leg and moved his left arm up and down. As he did that movement, he appeared to be flying. Did you know why?
The human body exhibits bilateral symmetry. This means that only one plane, called the sagittal plane, divides the body into roughly mirror image halves (external appearance only). The two halves can be referred to as the right and left halves. The right half is similar to the left half in size, shape and parts.

Archimedes' Screw


Have you seen marbles moving up the screw? Well, we did saw it through Archimedes’ screw. At each turn of the screw, it’s lower end scoops up the returning marbles. These marbles become trapped in the spaces between the screw thread. With the continuous turning of the screw, marbles slide up the length of the screw and exit a hole near the upper end of the plastic tube. Then, each marble rolls down a loping frame with guiding pins. They enter the lower hole for their return and the cycle is repeated.
This screw is historically used for transferring water from a low-lying body of water into irrigation ditches in the Nile delta in Egypt and for pumping out water from ships. It is named after its inventor, the Greek mathematician and physicist Archimedes (237-212 BC.).

Bernoulli Blower






We scooped up Bernoulli Blower. Everyone did have fun trying this exhibit. We spotted Kaye and Jane trying. They placed the ball on top of the air nozzle and got on the bike then pedaled it. They took turns and pedaled the bike as fast as they can and the ball floated in the air. Do you know why that happened?
The ball stays afloat because the air from the blower exerts an upward force on the ball. The faster you pedal, the higher the ball will float.
When the ball is pulled partly out of the air stream, the air that is moving fast along the side of the ball exerts less sideways pressure on the ball than the still air in the room. The greater pressure of the surrounding air pushes the ball back to the center.

Bone Stress


From the instructions, we looked at the plastic bone and gently pushed the lever to squeeze the bone.
The plastic bone represents human thigh bone or femur. When we squeezed the bone, we saw stress patterns because the plastic bone is mounted between two polarizing filters.
Stress patterns and concentrations like ones visible in the plastic are also present in our bones, as they flex under the daily loads imposed upon them.