The field trip

Museum IPTEK

In museum IPTEK I learn many things like that fire can burn sugar into bigger fire and that when we put some soap on our hands and with some foam, when you put fire it will be like we are holding fire in our hand.

I saw a lot of stuff there like structure feeling, rolling pins, weight feeling and earthquake house. We take pictures too and they were awesome. there were some inventions that calculates our speed of peddling and there were a ball that has electricity in it but when you touch it, it doesn't hurt. There was that tube thing that transfer sound when we talk to it and the other tube was really far from the 1st one.

 

Museum Listrik

In museum Listrik there were interesting stuff there, like the giant globe, our solar system, the substitute for coal and the humongous Rocket.

We tour around the place and I saw cool inventions that was made by interesting stuff that is impossible to create. I saw a stove that uses heat from the sun as the energy. We have only been there for 10 minutes and when we were done, we go back too school. The field trip was fun though.

 

1) What is Electromagnet?

An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.

2) How does it work?

An electromagnet works by running electric current through a wire, you can create a magnetic field. An electromagnet starts with a battery and a wire. What a battery produces is electrons..

 

3) How to make an electromagnet?

-Materials

    -One iron nail fifteen centimeters (6 in) long

    -Three meters (10 ft) of 22 gauge insulated, stranded copper wire

    -One or more D-cell batteries

    -A pair of wire strippers

-Proceduers

  -Some of the copper wire needs to be exposed so that the battery can make a good electrical connection. Use a pair of wire strippers to remove a few centimeters of insulation from each end of the wire.

  

-Neatly wrap the wire around the nail. The more wire you wrap around the nail, the stronger your electromagnet will be. Make certain that you leave enough of the wire unwound so that you can attach the battery.

-Attach one end of the wire to the positive terminal of the battery and the other end of the wire to the negative terminal of the battery. If all has gone well, your electromagnet is now working!

 

4) What are the example of electromagnet in our daily life?

-phone

-ATM machine

-CT scan

-playstation 3
-XBOX 360