Balloon Racer

Doing the balloon car project was really fun.  I was with Ashley and it took us a ton of tries!  We first started off with a big car made out of styrofoam.  It had big cd wheels and a funnel coming out of the back.  We tested it and it of course did not work.  So, the next day Ashley brought in some cracker jack box's.  We thought that if we decreased the size of the car and wheels it would go faster.  This model also did not work!    Our third design was styrofoam, but with smaller wheels.  Our farthest ground covered was 12 square blocks.  We got in the bracket, but we lost to Elizabeth, Gray, and Lauren's car.  Although we built a ton of models, it was still a really cool project and I had a great time doing it.

*Look on Ashley's bog for the video*

Alicia Keys- No One

Notes          Frequency          Wavelength

A                27.5                     1250

Db              34.65                   996

F                 21.83                   1580

Gb              46.25                   746

Bb              58.27                   592

E                20.6                     1670

Song

file:///Network/Servers/odxserve.sdsgriffin.org/Volumes/Xraid2/SDSUsers/MS/maybrybaehr/Desktop/alicia%20keys-%20no%20one.band/

The Journey of the Parachute...!

Our group (Gray, Elizabeth, Zelle, and Gabby) have accomplished a lot with the cute pink parachute! :)  We started off with making a ton of test parachutes and later on we made the real model.  The test were really fun though because we could see what we needed to fix or what needed to stay the same.  Around the second test parachute we decided to make the spill hole smaller and make the body of the parachute wider.  Once we made these adjustments it worked.  Then we had to wait for the real fabric to come in.  It took about a week or so for all the material to come in.  Once it was all in we made an outline on the chute with sharpie.  The group decided to cut it in a circle with a really small spill hole at the top.  At the very bottom we are sewing three steel rings on to four different sides of the chute.  This is where we will attach the strings/rope.  Once we are done sewing we will test the entire thing out.

Wednesday Class

Today our group did another test parachute.  We made the parachute shorter and wider, we also made a smaller spill hole.  Once the parachute was finished we attached Ashley, Lauren, and Aalia's container.  We went outside and it worked!  The parachute held the container and it landed safely.  We have the entire thing on tape, which i will add to the blog tomorrow...  It was really fun though:)

Objectives!!!

Objective One: 


 1. A solution is defined as a clear and homogeneous mixture of a solute in a solvent.  In other words a solution is something dissolved in something else.  A colloid is a substance dispersed throughout another substance.  An example of this would be milk.  Suspension is a substance containing large, solid particles in it.  An example of this would be sand in a cup of water.
2. When a solution forms, particles of the solute leave each other and become surrounded by particles of the solvent.
3. Solutes affect the boiling point and freezing point of a solvent because the range increases for the boiling point and decreases for the freezing point.
4. If you mix blue food coloring in water it would be a solution because the blue coloring mixes in with the water.
5. It is explained in number 3...


Objective Two:


1. Concentration is the measure of how much of a given substance there is mixed with another substance.
2. You can figure out what a substance is because of its solubility. You can use the characteristic of solubility to know how much of a substance can be dissolved in a solvent. If you know the solubility of a solvent, then you know how much of a solute can be added until the solvent is at its maximum concentration.
3. There are three types and those are tempature, pressure, and type of the solvent.
4. When the tempature is hot the solid will melt and if it is too cold it will freeze.
5. Solubility is helpful in seeing the substances because you can see how much of something is able to be dissolved in it.


Objective Three:


1. Acid Properties: sour tasting, corrosive to metals, make litmus paper red, and they also release hydrogen ions.
2. Base Properties: slippery,  makes litmus paper blue, releases hydroxcide ions, and they usually end with "ide".
3. You put part of the litmus paper in a solution or substance and wait to see if it will turn blue or more red.  If it is a bluey color, it would be a base and if it was a reddish color it would be an acid.
4. You could tell because it could have a sour taste ( acid ) or a bitter taste ( base ).
5. The fertilizer will hurt your hands because it has acids and strong chemicals in it.


Objective Four:


1. The ions in acids would be H+.
2. The acids will start to release hydrogen ions and the bases will start to release hydroxcide ions.
3. H+NO3 ( this is an acid )
4.  The pH tells you how much H+ ions are in a certain acid or base.  If the pH is lower than 7 it is an acid and if it is higher it is a base.
5. When the pH number is lower, the concentration of the hydrogen ions is higher. So, the solution with the pH of 3 has more hydrogen ions.


Objective Six:

1. acid: something that reacts with a base to neutralizes its properties, something that tastes sour, something that reacts with an active metal to liberate hydrogen gas, and something that conducts electricity
2. neutralization: a chemical reaction when an acid and a base react to form salt
3. indicator: a halochromic is chemical compound that you can add to a solution little by little to see the pH of a solution can be indicated visually
4. corrosive: if something is corrosive, then it will destroy or severely damage another thing when it comes into contact with it
5. hydroxide ion: the negatively charged ion in a water solution of a base

How do we know about electrons if they are so SMALL?

The discovery that the electron was a subatomic particle was made in 1897 by J.J. Thomson at the Cavendish Laboratory at Cambridge University, while he was studying cathode ray tubes. A cathode ray tube is a sealed glass cylinder in which two electrodes are separated by a vacuum. When a voltage is applied across the electrodes, cathode rays are generated, causing the tube to glow. Through experimentation, Thomson discovered that the negative charge could not be separated from the rays (by the application of magnetism), and that the rays could be deflected by an electric field. He concluded that these rays, rather than being waves, were composed of negatively charged particles he called "corpuscles". He measured their mass-to-charge ratio and found it to be over a thousand times smaller than that of a hydrogen ion, suggesting that they were either very highly charged or very small in mass. Later experiments by other scientists upheld the latter conclusion. Their mass-to-charge ratio was also independent of the choice of cathode material and the gas originally on vacuum tube. This led Thomson to conclude that they were universal among all materials.

How do we know electrons exists if we cants see them | Answerbag http://www.answerbag.com/q_view/220049#ixzz161DFirxC