John+K+sp2013

Two Types of Experiments Extension

Paper Airplanes: The purpose of the paper airplane experiment was to find out the average time of flight in the air. This was a comparison experiment, because our independent variable was not a value. That meant that we were comparing different objects. The control of our experiment was the bullet class plane. Our independent variable was the type of plane being thrown, and our dependent variable is the time of the plane’s flight. The method that we used was: Throw the plane; measure the time of the flight; record the time. The results of our experiment were that the bullet plane flew for an average of 1.99 seconds. The Ring plane flew for an average of 2.63 seconds. The modified ring plane flew for an average of 2.04 seconds, and the interceptor plane flew for 2.91 seconds.

Rubber Bands: The purpose of our rubber band experiment was to find out the various distances different rubber band would fly. This was a comparison experiment, because our independent variable was not a numeric value. The control of our experiment was a dark brown rubber band and the independent variable was the type of plane. Our dependent variable was the distance the rubber band would fly. To conduct the experiment, we took a rubber band, pulled it back a certain distance, let go, measure the distance it flew, and recorded that value. The light brown rubber band flew for 6.84 meters. The dark brown rubber band flew for 8.07 meters. The white rubber band flew for 7.45 meters.

ISP Reflection

My ISP project was on the best antenna material for an AM radio. The problem that was being solved in the ISP project that I did, was to see what the best material for an AM radio's antenna is. I used a copper antenna, an insulated copper antenna, a steel antenna, and the normal antenna for the radio. The answer was that a pure copper 8 gauge wire that was not insulated was the best type of antenna. I think that the experiment went well except that my hypothesis was proven incorrect. The results of the experiment were very stable in the end. I think that I felt really interested in the ISP project that I did, because I had done an experiment with radio telescopes last year. The experiment that I did was very fun and interesting, and I think that I enjoyed it a lot!

ISP Job Reflection Paragraph The job that I chose was electrical engineer. This career relates to my ISP because I chose to do an experiment in which I had to figure out the best material for an antenna. This is similar to what an electrical engineer would do because they work with materials and test them to see what the best things are. That is what I did with the different antenna types and the radio. The person in this career would work on designing and testing various materials for electronic systems. They would also help create them. A person would have a 40-hour week in this job. They would get to their office and meet with consumers, and in their free time the person would work on designing electronic systems. They would also conduct surveys, study floor plans, experiment in a lab, test projects, and supervise other people.

My Model Part 1 and 2 The initial model that I did was not very different from my first model. The difference is that the second model goes into a more detailed description of the screen, and explains the cathode gun in more detail. The other difference is that the casing on the CRT is not explained about in #2. The major disadvantage about this is that the casing is not detailed enough. The power cords are also not explained in detail on the second diagram. The font size is small on both of the diagrams that were posted because the diagram is small.

Proving a Rock, Water, and Air are Matter The Rock The purpose of the experiment was to find out if a rock is matter. The rock experiment involved taking a rock and putting it in water to figure out if the rock had any volume. To find out the mass of the rock was anything, we weighed the rock. The volume of the rock was 5.5 cubic centimeters, and the mass was 12.5 grams. The Water The purpose of the experiment was to find out if water is matter. The water experiment involved measuring the volume of water in a graduated cylinder and weighing the weight of the water via the displacement. The volume of the water was 88 milliliters, and the volume was 87 grams. The Air The purpose of the experiment was to find out if air is matter. The air experiment involved taking air and measuring the weight of a balloon, and then weighing the balloon with air in it. Then the balloon was estimated to have a volume of 16 liters. The weight was 0.5 grams.

=Salt Crystals= Salt is an interesting material that comes in many different forms. It is used in many purposes, from cooking to chemistry. The chemical formula is NaCl (sodium chloride) for table salt. A salt is made from a reaction between a metal and a nonmetal as a byproduct. A crystal is a material with a geometric pattern in the molecule's shape. Salt is an example of this. Salt is a compound because it has two different types of molecules. Some different types of salt are potassium dichromate, sodium chromate, and potassium ferricyanide. All of those salts are used in colored dyes.

=Separating Salt From Sand=

The method that was used to separate the salt from the sand was very precise. It consisted of taking the salt and dissolving it into water, with the sand. The sand would not dissolve, because it is not dissolvable into water. The salt was left at the bottom of the water. The salt got absorbed into the water, and then it was filtered out into another beaker, using a coffee filter. The salt-water was then boiled off at 400 degrees celsius, and when it was done with no water left, the beaker was taken off the hot plate used to boil it. The remaining sand in the separate beaker was put onto the hot plate, and the trace amounts of water was boiled off. The salt and the sand was in separate beakers, and what was left to do was to weigh them both. The method used to weigh it was displacement.

The results were not as accurate as possibly wanted, but there was more salt then sand, by one gram. The sand had 1.775 grams all together, and the salt had 2.25 grams by itself. The results could have been improved by taking the filter out, and not dumping it into the beaker and using a stirring rod to block the sand. The salt was crusty in the bottom of one of the beakers, and was one with itself. The grains of salt bonded together. The sand was in the bottom of the other beaker, just sitting there. It looked normal.