Category Archives: Science

Matter * Energy * Life On Earth: Integrated Hands-On Science Program.

Static Electricity

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Photo on 12-3-13 at 11.22 AM #2Triboelectricity is when a pair of objects has one object that loses electrons really well and one object that takes electrons really well. A few examples of these pairs are a plastic tube and human hair, a record and fluffy wool. In science we experimented with pairs seeing which ones worked. We found out if they worked by putting one of the objects to the electroscope that we made. The  electroscope  that we made was made out of a wine glass and two pieces of tinfoil that were hanging of a paper clip in the middle of the wine glass.

Photo on 12-3-13 at 11.30 AMA Leyden Jar is a plastic cup that is wrapped in tinfoil on the outside and wrapped in tinfoil on the inside with a few inch gap around the top. In class we paired up and made one. We repeatedly put one of the objects to a Leyden jar and once it was charged up enough we put our thumbs on the tinfoil on the outside and our pointer finger on the paper clip and the charge went through our fingers.

On Laziness

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PIECE OF WRITING:

When I retired recently, my only thought was to bother about nothing but spending the little life I had left alone and in peace.  It seemed to me that I could do my mind no greater favor than to leave it alone with no work to do but think about itself.  I hoped it could do this more easily now that I had become wiser and more self sufficient with time.  But I find that my mind gives itself a hundred times more trouble than it had when I was busy.  It gives birth to many fantastic monsters one after another without order or purpose.  I have recently decided, in order to think about this experience, to put these monsters down in writing.  I hope in time to make my mind ashamed of itself for its laziness.

FOR THIS ASSIGNMENT WE WERE SUPPOSED TO WRITE WHAT WOULD HAPPEN IF YOU LET THE MONSTERS TAKE CONTROL.

The dangers of day dreaming are that monsters are coming out of your head.  The character traits you lack if you are having these dreams are grit and self control.  Grit, because you need to stay active and not zone out even if you don’t want to otherwise the n=monsters can stay alive.  Once the people are lazy the monsters do bad things to you.  The bad things the monsters are doing represent the bad things that will happen to you if you zone out.  All the people in the picture are asleep or really lazy.   All the things except the monsters are being sloths and the monsters are tending to them so they stay that way.  People need to stop with all the zoning out so they will have good lives.  these people need self control and grit so they can do this.

Insulators and Conductors

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In science class we made circuit testers, and tested all sorts of things to find out whether they were insulators, something that did not allow our circuit testers lights to light up, or conductors things that allowed our lights to light up. I think it is weird that the salt water was a conductor, and regular water and vinegar are insulators. The only difference is that the salt water has salt and the water and the vinegar doesn’t. I noticed that all of the conductors are types of metal, except the salt water and the graphite. I think that maybe salt might have a tiny bit of metal like iron in it, and maybe that is why it works. I’m not sure why graphite works.

None of the insulators were metal, so I think that their must be some sort of metal in all conductors even if it is only a tiny bit. I thought that a CD would work, because I thought it was metal, but it didn’t work, so it must be plastic instead of metal.

Janel's circuit tester

 

*Science* Category

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Science posts go here…

Lab Projects (photos, diagrams, slideshows, & videos of your completed Projects or Project Exams);
Theory Slideshows and Animated Simulations (Use Keynote to make animations!): Explanations of: How Human’s Hear, How Speaker’s Work, etc;
Science Posters (scan or create digitally);
Combined Science-History Projects (e.g., Inventions Timeline; e.g. History of The: Automobile, Cell Phone, etc.); Combined Science-Math Projects (SONAR math challenges, etc.).