Adding the ice cold water to the bottom of the hot water did not produce a current because the cold water did not move in a definite direction. Rather, it spread out on the bottom of the cup. 3. Define convection. Infer why the current that was created during this lab is called a convection current.
Emphatically, of the three methods, photo voltaic and photo thermal are the major ones. In this case, photo thermal will be discussed. According to Lee (2012: 43) we use solar radiation to heat water which is commonly used for heating .Mirrors are used to capture the rays of the sun into a water filled pipe. This heat is used directly and converted into mechanical energy and it finally becomes electricity. Equally important, light is converted into electricity by photoelectric effect .Photo electric panel is made up of several cells that generate direct current and then it is converted to alternative current by an inverter.
Unfortunately, after performing this experiment, we were not able to support this hypothesis and come up with a conclusion. A possible explanation for why there was no mitochondrial activity observed in the boiled corn kernels might be because increasing the temperature would disintegrate dehydrogenases and thus they wouldn't function as efficient or they
Some suggestions for modification include insulating the beaker with paper towels, a cup, or another product. Some changes the group would make would be to prevent the solution from boiling while it is being heated. This, along with the lack of insulation could be what caused only slight crystal growth. Another thing that could have impacted the results was that group members did not have the thermometer placed properly at the beginning of the lab. This inaccurate temperature reading could have caused
Like measuring off by a slight amount or leaving behind some of the substance if transferring it over to another flask or beaker. A person could not do something so perfectly because humans always do errors while doing things, it would be very unlikely for a chemists to get a 100% yield after for a chemical reaction. 6. The percentage yield was not 100%. Some factors that could have affected the experiments end result could have been through measuring the all the reactants and equipment their might have been an error somewhere there.
Conduction is the transfer of heat by molecular activity from one part of a substance to another part, or between substances in contact, without appreciable movement or displacement of the substance as a whole. Convection is the transfer of heat by the movement of a gas or liquid. Heat is transferred from a hot-air furnace into the interior of a house by convection. Radiation is a form of energy called radiant energy, existing as electromagnetic waves that travel at the speed of light. Solid mass transport is when a solid mass is carried by the wind from the burned area to an unburned
Another weakness would be that they used tap water as their solute. Tap water can contain other substances, therefore might affect the electrical conductivity. However, it probably did not have that much of an effect because they kept the solvent (tap water) controlled throughout the experiment. They did not use tap water for some trials and distilled water for other trials. Something I found difficult in carrying out the method was to make sure that the amount of substance is exactly 10g (or 30g or 60g).
Throughout my short, young live I haven’t had much experience with life-changing obstacles or events. In addition, overcoming an obstacle depends on what qualifies as an obstacle in your eyes. Since, we all have different opinions about what an obstacle is, I believe it all comes down to how personal the challenge is to you and how serious you are to overcome it. Therefore, my personal demon I had to defeat was as simple as stop drinking coffee. Firstly, the reason I had to quit coffee was simply because I was probably mildly addicted and it wasn’t benefitting me at all.
Introduction “Water, water everywhere, nor any drop to drink,” laments the sailor Samuel Taylor Coleridge’s The Rime of the Ancient Mariner 1789. It means that despite being surrounded by water, we cannot benefit from it. It is because Earth’s water is 97% salty, and salty water isn't good for drinking or growing plants. But maybe if you take the salt out of the water you can able to drink and use it? This research paper focuses mainly on utilizing small-scale type solar desalination and making it more efficient.
The reason could be in the difference between information presentation. Nest doesn’t provide a peer comparison and doesn’t give a suggestion how to save energy in an effective way, therefore users have no opportunity to see their progress. While Opower gives this opportunity and also it provides useful information according energy savings. We assume the combination of persuasive strategies that is used in Opower meter has better effect of persuading people to reduce energy consumption than Nest. However, the authors didn’t consider this question in the papers that was studied Nest and Opower meters.