Alyssa+T+sp2013

=Two Types of Experiments Extensions = We wanted to see whether a paper airplane would fly in the air the same amount of time with 2 paper clips attached. It ended up affecting the airplanes time in the air. It took less time in the air. The more weight on it, the less amount of time it stays in the air. The control of our experiment was the copier paper plane without the paper clips attached. The independent variable was the type of paper used, and the dependent variable was the average time in the air. The construction paper actually flew with more time in the air with the paper clips. We first flew the different planes without the paper clips to see that time. Then we attached the paper clips 10 cm. from the front of the plane. We recorded our time and data in EXCEL. The construction paper flew the most time by far. This was a relationship experiment.

We wanted to see whether the angle a rubber band was shot at effects the time in the air before it hits the ground. It does affect it. Our control was 0 degrees. Our independent variable was the angle it was shot at, and the dependent variable was the time it was in the air. It is a comparison experiment. We first measured the 3 different trials with 0, 25, 45, and 65 degrees. The 25 degrees shot flew the farthest.

=Food Science Technician = If I had to pick a science career based on my ISP project, I would be a Food Science Technician. If I were in this career I would maybe create a new candy bar, test different foods to see if they are able to sell, or mix ingredients to make something yummy. A couple of things that I would do in this job would be: helping develop a delicious new candy bar, t est cereal to make sure the nutrition labels are filled out correctly, check for bacterial contamination in meat to prevent food poisoning, m ix ingredients to make a tempting salad dressing. A typical day would be to start the day by conducting standardized testes on food and other edibles, t hen provide assistance to other food scientists, then compute moisture or salt content, then clean and sterilize lab equipment, while you where doing this someone else may be recording test results, then analyzing test result, then taste or smell foods to ensure they are of the right flavor, and then mix blend or cultivate other ingredients. This career choice is relevant to my experiment because they both have something to do with food and comparing food. My experiment was comparing candy dissolvation times, and their job is to look at foods and compare them to good foods to sell to the market. = =

= = = = = = =ISP Reflection =

The question I wanted to experiment with was to see how long it takes different candies to dissolve in someone’s mouth. I found out that Cotton Candy took the shortest time and Taffy took the longest time. Cotton Candy took four seconds, M&Ms took two minutes, Pop Rocks took three minutes, Jelly Beans took four minutes, Smarties took five minutes, Starburst took nine minutes, and Taffy took 11 minutes. I think my experiment was done very well. I had a few bumps in the road, (people accidentally chewing the candy) but otherwise I think it was a very well done experiment. I would rather work on a group experiment, not an independent experiment. I think it helps if you have other people because they can write stuff down, or test, or do internet/book research.



=My Model of an iPhone 5 =

 

When I first looked at the iPhone, I came up with complete different names for things once I'd looked them up. I thought that the power button was called on/off. I found out that I was wrong.

My partner and I wanted to prove that rocks, water, and air are really matter. We decided to start with the rock. We used rocks, a water vial, water, and a triple beam balance.First we measured the rock on a triple beam balance. We recorded that information. Next we filled a vial or glass tube to 90 mL and dropped the rock into it. Once we did that that water in the vial raised to 94 mL. We subtracted the two numbers and came up with the volume of the rock. After that, we needed to find the mass, so we put the rock on the triple beam balance and found the mass. The mass was 15 grams and a volume of 4 cubic centimeters. <span style="font-family: Arial,Helvetica,sans-serif; font-size: 160%;">For the water we used almost the same materials as the rocks. Only the rock was not used. We filled the water vial with 90 mL of water and that gave us our volume. We weighed it on a triple beam balance to find the mass. The volume was 90 mL and the mass was 98.5 mL. <span style="font-family: Arial,Helvetica,sans-serif; font-size: 160%;">The we did air. We used a balloon, air, triple beam balance, and little cubes. We guessed that it would be 2000 mL. Then we blew up the balloon, measured it, and recorded it. It was 2.5 mL of mass.
 * <span style="font-family: Arial,Helvetica,sans-serif; font-size: 210%;">Proving Rock, Water, and Air are Matter **

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 180%;">My lab partner and I created a salt crystal with marshmallows and toothpicks. The colored marshmallows are the chlorine atoms and the sodium atoms are the white marshmallows. The atoms go sodium, chlorine, sodium, chlorine, and keep switching back and forth. The chemical formula for table salt is NaCl (Sodium Chlorine) and is a compound because it has a metal and a non-metal in it. This makes it a compound. A crystal is a piece of homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces. Salt, is a crystal. If a molecule or atom dissolves in liquid, then it is a salt. Some examples are calcium carbonate, sodium carbonate, sodium acetate, potassium cyanide, and sodium sulfide. Some other names for table salt are: fine salt, gourmet salt, and sea salt. These are all table salt or NaCl. <span style="font-family: Arial,Helvetica,sans-serif; font-size: 160%; line-height: 0px; overflow: hidden;">
 * <span style="font-family: Arial,Helvetica,sans-serif; font-size: 220%;">Sodium and Chlorine Salts **


 * Separating Sodium Chlorine and Silicon Dioxide **

My lab partner and I did an experiment separating sodium chlorine (salt (NaCl)) and silicon dioxide (sand (SiO2)). We were to find out the weight of the separate compounds. My partner and I decided to start trying to <span style="font-family: Arial,Helvetica,sans-serif; font-size: 180%;"> find the weight of the sand.

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 180%;">We put our mixture of sand and salt onto a hot plate that was off. We then stirred the mixture well. We covered the sand/salt mixture with 10 mL of water leaving about an inch of extra water over the mixture. We turned on the hot plate, and stirred the sand/salt/water mixture a lot until all the salt had dissolved into the water (Seen in Figure 2). We then took a larger beaker, and put a coffee filter stretched out over the mouth of the beaker, and put a rubber band around the filter. By doing this we were able to pour the saltwater/sand mixture into the beaker and the sand would stay in the filter, and the saltwater would go to the bottom of the beaker (Seen in Figure 3) We then put the beaker with the sand in the filter and the saltwater in the bottom onto a hot plate and that evaporated most of the water from the saltwater, and the extra water from the sand. There was still a little extra water left in the salt. We then took off the coffee filter, and put it on the triple-beam balance to measure it. When we weighed the coffee filter with the sand on it, the whole thing weighed 7.4 grams. We weighed a separate coffee filter with no sand in it, and it weighed 2 grams. We then subtracted 2 grams from 7.4 grams to get the sand's weight of 5.4 grams (Seen in Figure 4). So once we had the weight of the sand, we need to find the weight of the salt. We first had to make sure there was no water left at all, so we put the large beaker with the salt with a little bit of water on the hot-plate, and that evaporated the extra water (Seen in Figure 5). When we weighed the beaker with the salt in it, the whole thing weighed 213 grams. We weighed a separate beaker of the same size with no salt in it, and it weighed 212 grams. We then subtracted 212 grams from 213 grams to get the salt's weight of 1 gram (Seen in Figure 6).

<span style="font-family: Arial,Helvetica,sans-serif;"> In all my partner and I were very surprised at the weight of the salt. We had to double check it a few times to be sure. I think that one thing I would have done better on the experiment would be to leave the sand/salt water mixture on the hot plate a little longer.