Tuesday, February 12, 2008

Activity 4.4 Question (AQ#4)

Does the kinetic or caloric theory better explain the results you obtained?

12 comments:

Christine Jackson said...

The Kinetic Theory best explains the results obtained from “shaking the shot”. This is because the Kinetic Theory explains that movement of atoms and molecules in objects cause them to heat up. When we were shaking the copper shots, the slow moving molecules collided with other slow moving molecules, causing them to speed up. This causes a chain reaction until all of the copper shots are warmer than when they started.

Erin Holiday said...

The kinetic theory better explains the results I obtained. The kinetic theory states that the molecules and atoms of all substances are in motion and that the faster they move, the hotter the substance is. It states that when fast moving molecules collide with slow moving molecules the slow moving molecules speed up and the fast moving molecules slow down. When I shook the copper shot in Activity in 4.4, that mechanical energy was then transferred to the copper beads. The slow moving atoms that made up the copper beads then collided and ricocheted off, causing the copper bead atoms to move faster. The faster the atoms moved, the hotter the temperature of the copper was. The reason the caloric theory does not explain the results I obtained is because caloric would have had to flow from my hand thus causing my hand to decrease in temperature. I do not have numbers to prove this however, I don't remember my hand decreasing in temperature. I actually remember it getting warmer due to the mechanical energy from shaking it. This is why the kinetic theory better explains the results I obtained in Activity 4.4.

Christopher Noda said...

In the activity shaking the shot the kinetic theory better explained what happened in the experiment more then the caloric theory. First the kinetic theory states that as an object is moving its atoms and molecules start to move faster. Because they are moving faster they are colliding into each other more ofter. When this occurs an object heats up and its mass expands. Therefore causing the overall temperature of the object to increase as well as its mass. This experiment was all about little objects colliding and producing heat. The balls inside the shot were constantly colliding and causing an increase of temperature while they were increasing in mass as well. Energy was transfered into the form of heat from the mechanical energy i produced from shaking the shot. When this mechanical energy caused objects to collide the kinetic energy rose and produced heat.

Jackie Schechter said...

The kinetic theory better explains our results in activity 4.4. The kinetic theory states that when two objects collide energy is transfered which causes the faster molicules to slow down and the slower molicules to speed up which makes the hotter object to become cooler and the cooler object to become hotter. In activity 4.4 we found that the faster and longer we shook the bottel of copper shot the higher the temperature was at the end. This experiment proved that the kinetic theory is the correct theory.

bmaples said...

The kinetic theory is correct and the caloric theory is wrong because there was no experiment to prove his theory and hirn had a experiment to prove his theory therefore providing evidence to state his thyeory and to help support getting people in order to believe that theory was correct.

vsrivastava said...

The kinetic theory better explain the results. The reason is because it states that when atoms move faster the temperature increases. So, when the atoms collide it causes them to move through bigger spaces= increase in volume. Therfore, when objects collide the hotter object transfers its energy to the colder object. In 4.4 when we shooke the shot, they got hotter. Proving the kinetic theory.

anellore said...

The kinetic theory obviously better displayed our results. As we all know, there is most probably no such thing as caloric fluid. The scientific reason it better displayed our results was because the kinetic theory states that when the atoms move faster the temperature increases. When the objects(the shots) collided, they created friction and the hotter object transferred heat to the colder one.

mmann said...

The kinetic theory better explains the results we obtained. The kinetic theory states all atoms and molecules are in motion and faster movement makes higher temperature. The more seconds we shook the shots for the higher the temperature was when we measured. The kinetic theory explains this because the atoms and molecules in the shots were moving quickly making their temperatures rise.

Suzie said...

The kinetic theory better explains the results I obtained. The kinetic theory states that heat incresases when atoms move fast, and decreases when atoms move slowly. When faster-moving atoms collide with slower-moving atoms, there is a transfer of energy; the slow-moving atom becoms faster, and the faster-moving atom becomes slower. Each time atoms colllide, they ricochet farther and farther apart, creating space between themselves and makeing the object they are a part of expand. According to my proup's results, the longer the shot was shaken, he higher the increase in temperature of the shot. The more time a shot is shaken, the more time there is for the metal shots to bounce off each other, meaning the molecules inside the metal shots bounce off of the molecules of other shots as well as their own. (A shot can't be hit oon all sides at the same time by only one other shot; so if the molecules on one side of "shot one" hit the faster-moving molecules of "shot two," energy is transferred from the "shot two" molecule to the "shot one" molecule. The faster-moving molecule in "shot one" will now hit all the molecules in its own shot, making all the shots faster and making the copper shot hotter.) With so many of these energy transfers, all of the molecules will "pass around" thermal energy, and the shots will become hotter. Then, the energy will be "passed around" many times, making the temperature of the shot to rise. Basically the reason why the kinetic theory better explains the results is because the metal shots are shaken, causing all the shots to touch and bounce, which causes the molecules to bounce and touch, causing a rise in temperature. The caloric theory does not prove this; if caloric is heat, and the caloric lies between all the atoms to start, would the caloric rush into all atoms at the same time? If it did, would it be distributed evenly, since they all would be the same temperature without caloric? Why would'nt the caloric be distributed evenly? Even if some atoms did start with caloric in them, and the caloriic travels to an area of lower temperature (2nd Law of Thermodynamics), do atoms move to distribute the fluid? And if the atoms did move, why wouldn't that contribute to the amount of thermal energy transferred?(Using humans as an example, we heat up when we move.)Does caloric flow into our atoms when we excercise? Why would caloric flowing between atoms happen with a greater level of movement with our body? I can not answer these questions, and without answers, there is no solid information to go by.

copalmer said...

The kinetic theory better explains the shaking the shot experiment becasue it involves movement. One part of the kinetic theory states that the more something moves, the hotter it gets. And the longer we shook the shot, the higher the temperature change was.

Lucy Lloyd said...

The kinetic theory better explains the results we obtained from shaking the shot. The kinetic theory states that when the molecules and atoms in a material or object move faster, the object gets warmer and expands. As we shook the shot, the molecules and atoms inside the shot and even in the container would collide and exchange motion and heat. As they hit each other, they would get warmer and the molecules inside the shot would expand and create more thermal energy. The energy continues to be passed around as the different pieces of shot collide with each other and the container, causing all of them to heat up and expand. The kinetic theory better explains this because it shows that movement of molecules and atoms creates warm thermal energy.

Foster Bundy said...

The Kinetic Theory better explains the results we obtained from the "Shaking the Shot" experiment. It explains that if slower moving molecules collide with faster moving molecules the slower molecules will speed and heat up causing the atoms and molecules to expand. This will cause a rise in thermal energy and it will heat the rest of the copper shots up.