Selasa, 20 Maret 2012

Fieldtrip to IPTEK and Museum listrik

On 8 March 2012, the grade 6 students are going to IPTEK and Museum Listrik. These places are located in TMII (Taman Mini Indonesia Indah). We depart from Binus International School Serpong at 07.30 and arrived there at around 10.00. Once we arrived, we went to the auditorium and saw experiments. Here are the pictures and info of the experiments.

1. Our friends, Maxi, Marvel and Indi was doing the Dragon Fire experiment. The flour and the other materials was put into the funnel and connected to the hose. When the assistor turn the fire on, Maxi blows the hose while the others are holding it.

2.Then, the next experiment is the burning hand. Our friend, Marvel was going to burn his hand, but it was not hurt or burned, because he put the hand to a water to the soap water, so it is not burned. First time, he was scared and he was shocked to hear the title of the experiment. When the assistor turn on the fire, Marvel prayed and prayed. First, the assistor turn the fire with the mathsticks. But when the assistor turn the fire on with the gas, Marvel was more frightened than last time. Finally, he is safe. Then, the assistor ask another volunteer. Audrey was chosen to come to the stage and do the things as what Marvel do. This experiment test our braveness.

3Then, Uqi and Sisi do the experiment called the collapsing can. They burn the can and put it to the water. The .can will crash later on. Uqi can do the experiment. But Sisi failed to the experiment, because she dont do it properly.

4.The last experiment is the water windmill. Our friend, Ria, volunteer to do the experiment. The guy there burn the can that Ria hold with rope. Then, the windmill will spin.




Then, we went to the exhibition. We saw engines and diesel in the exhibition. There was a bicycle on a rope, but we need to buy the ticket to ride and our weight must to be less then 50 kg. Then, we saw the car machines. with the components and a clear description.  We saw a miniature of a plane and helicopter. After that, we went to the first floor and we saw many electronic tools and explanations. We saw the earthquake simulation. It was just basically a house with machine shaking it. I don't went there but my friends went there. They said it was not too scary. I dont went there because we need to queue so long. Then, I saw a replica of the first transistor. It was so big but the modern transistor is even lesser then 0.5 cm. Transistor is used for modern electricity. It was created by a physicist named Julius Edgar Lilienfeld in 1907. Then, year by year, people improve the type of transistor as it get smaller, smaller, smaller and smaller. Until the size of lesser than 0.5 cm. Then, we saw the pulley and simple machines that relates to the daily lives. There are 6 types of simple machines. These are levers, pulleys and inclined plane, wheel and axle, and gears. There are 3 types of lever. The first class, second class and third class. All simple machines are useful for our lives. Then, we saw seismometer and seismograph. These devices are used to measure earthquakes and volcanic eruptions.

After we saw the exhibition, we do experiments "Sains Menyenangkan". We did the electromagnet and simple battery. In this experiments we learned about the simplest way to make battery. First, we dip the filter paper to salt water to have chemical potential energy in the battery. Then we arrange it with the copper coin and aluminium foil as they are conductors of electricity. When we are done, we measure it with the avometer or the thing that we usually call the multitester. That device is used to measure the voltage or the amount of energy left in the battery. Electricians usually use this to test their inventions. The battery we created has the power of 2.5 v. Then, we do the electromagnet. Well, actually we have done it at school, but most of the time, we failed to do it and we should repeat it again and again.

At around 12 o'clock, we went to the library to have our lunch. We have Hoka Hoka Bento as our lunch. We have the lunch with the other school visiting that venue. I think that place is not supposed to be called library. Because there is no even a single book and the place was totally empty with only big shelves that they are planning to put the books there. After eating the lunch, we go around while waiting for the others to finish their lunch.

I saw a sundial, a type of clock that people used in the pastimes. The lightbulb represents the sun. I can turn it around to observe how the clock works. It was actually the same as the modern clock. But, they used shadows instead of arrows.

After all finished their lunch, we went to see the water rocket. The water rocket was much better than the one we made in the school. It flied much higher and further than the one we made in the school. To make it is so simple. we just need the 1.5 litre coca cola bottle and the pump with the pipes to support the rocket. First, we fill it with water, and pump it until the bottle is full of air, then we press the switch (which was basically bicycle break) and it will launch high to the air and fall to the soccer field.


Then, we went back to the bus and going for a trip to museum listrik. The journey there took a short time. When we arrived there, we were explained about how this museum is built. This museum was built by Soeharto, Indonesia's second president. Then, we looked around and we took some pictures



























Then we went back to the bus and go back to the school

Senin, 06 Februari 2012

Electromagnet

Electromagnet is a magnet that will work only with the electric power, battery. We lit the wire to the nail and connect it to the battery. Then, try to attract some staples and it will work. When the battery is taken off, the electromagnet stopped working and the nail will not be a magnet anymore. The more turns that we make, the more staples will we attract. The more the battery is used, the more staples will be attracted. Many waste disposal seperates the metal and the other materials with electromagnet so it will be easier to seperate those things. The CPU, television and the other electric appliances uses electromagnet so it can work. How to make it??? Just follow the following instructions. 

Materials:
-2 type D Battery
-A long nail
-5-10 staples

Instructions:
-turn the wire to the nail 20-50 times tightly.
-connect it to the battery.
-try to attract some staples.
-If you want the power of the electromagnet to increase, then add some more batteries or turn the wire to the nail more.