Four different temperatures were observed, including 4°C, 20°C, 32°C, and 60°C. It can be indicated that the temperature of 60°C had the highest absorbance rates (0.326 at the final time), followed by 32°C (0.179), and 4°C (0.142). With regard to 32°C and 4°C, it is noted that the tube that was 4°C initially had higher rates than the 32°C tube. Over time, the 32°C tube increased while the 4°C tube decreased, so at the end of 300 seconds, the 32°C tube had the higher absorbance rates. The 20°C tube had the lowest amount of absorbance with an absorbance rate of 0.126.…
Sound waves are generated from the speaker and carried across a medium (air) to a…
direct causation in the mobility of the molecules and rates of kinetic energy. If the temperature is raised…
1. If the room temperature for this experiment had been lower, the length of the resonating air column would have been shorter. The length of air column is directly proportional to temperature due to v=331msT273 .…
The properties of warm air are that it is light so it rises, can hold water and the properties of cold air are that it is more dense, and it cat not hold water.…
The purpose of this experiment is to measure the speed of sound in air and to determine the effects of frequency on the speed of sound.…
* Remember that temperature is a measure of the average kinetic energy of the particles in a substance. This means that the addition of heat to a solid causes the vibration of the particles to increase more and more as the temperature of the solid increases. This increase in vibration will continue until, at a certain temperature, the vibrations are rapid enough to break up the fixed arrangement of particles. At this point a solid will begin to melt into a liquid.…
Sound is a longitudinal (compressional) wave caused by a vibrating source. In this experiment, we use standing sound waves created by the tuning forks to determine the speed of sound in air in a tube when it reaches different resonances. In this lab we focused primarily on using standing sound waves (compressional waves) created by tuning forks in order to determine the speed of sound in air in a tube when it reaches resonance.…
This project looks at how the temperature of an experiment can affect its reaction time. The purpose of this experiment is to determine if dissolving reactions are affected by waters temperature. I believe that if the H2O temperature increases, then the Alka-Seltzer tablet will dissolve faster because the hot water molecules will move faster colliding with the tablet particles. Water will be the independent variable due to the fact is will always stay in its same form throughout the experiment. The Manipulated variable will also be the water, since I will be changing its temperature. The Responding the variable will be the timing of how fast or slow the Alka-Seltzer tablet dissolves. And the control is the glass of water that is set at cold tap water.…
The experiment proved my hypothesis and added to my hypothesis. As I mentioned that the closer the sound, the louder it seems, and the farther away it…
1. In the lab activity, you will examine sound waves as they are emitted from a moving source. Predict what will happen to the sound waves when the sound source is in motion. Record your prediction (hypothesis) as an “if then” statement. (For example: If you select the GO button, then the train will move)…
The increase of the temperature causes the molecules to move faster, causing them to crash into one another, creating a chemical reaction. Increasing the temperature not only increases the number of collisions but also increases the number of collisions that are able to transfer enough energy to cause a reaction to take place. This is because they have more energy and when they bounce around, they are more likely to collide. But not all temperature changes make particles move faster, when the temperature is lowered, the molecules move slower and collide less. A colder temperature drops the rate of reaction whereas a hotter temperature increases the rate of…
This lesson has helped me understand the 4th and 5th grade content standards by showing me how to incorrupt whole group science experiments. I already know the important of students learning and applying science concepts through experiments but sometimes school budgets and materials do not allow this to happen. This whole group sound experiment could easily be done by borrowing the machine that measures sound waves from the Jr high or High school. Learning about sound vibrations and waves did not need to be done just through worksheets.…
The rise in temperature due to global warming can cause damage to society and disrupt the way of life for many species of animals. Having higher temps will increase health issues around the world. Increase in heat can lead to an elevated number of strokes to those who already carry health problems. People who suffer from asthma, heat strokes and even dehydration could all be affected by the higher temperatures (Denchak). In summary we need to be prepared for the rapidly rising temps because society could face major health problems. People who suffer from allergies could be in jeopardy, while people who have difficulties breathing are at risk too. Higher temps increase the amount of pollen in the air leading to worsening allergies (Denchak).…
What properties of sound determine the volume of sound? Is this affected by the motion of the sound source?…