This lab was quite difficult for me because I had absolutely no idea what I was doing or how I was even getting the answers, but I was able to complete it and I did learn a few things about this lab like how the Doppler Effect is used to discover an extrasolar planet. To begin with an extrasolar planet is any planetary body that is outside the solar system and that usually orbits a star other than the Sun. Direct evidence of extrasolar planets is very difficult to obtain. Astronomers use methods like the Doppler technique which are commonly used more when searching for extrasolar planets. The Doppler technique is a good method for discovering extrasolar planets. It is used to analyze the motion and properties of the star and planet. Both the
The name of the lab is “Drops on a Penny.” I was expected to find the independant variable, dependant variable, write a hypothesis, and test the experiment. After testing the experiment multiple times, I needed to find the average amount of drops for each trial, graph them, and tell what kind of relationship it is. The last thing I needed to do was rewrite the details of the project and write a conclusion. The point of the experiment was to have the students get used to the idea of a lab, and get familiar with independent and dependent variables.
Introduction The purpose of this Lab was to identify the density of the unidentified object and determine what substance the unidentified object given by the teacher was. The density calculated in the experiment will stay the same because the density of the unidentified object will stay constant. The Independent Variable of this experiment was the calculated density and the unidentified object given. The Dependant Variable for this experiment was the density.
This demonstrated our ability to both create a solution, and correctly interpret the task at hand. In the second lab, Introduction to General Chemistry, An Experimental Tour, we were asked to accurately record data,
The scientists will conduct the experiment by taking four cups of water one that is just salt mixed with water, another that is just water, a third cup that is just ice water and finally a forth cup that is vinegar and water mixed. After that the scientists will drop one Alka-Seltzer tablet into each cup and see how long it takes for it to completely dissolve. The scientists will conduct these three times for
After finding the Rf values of the four known compounds, solvent 1 (99.5% ethyl acetate/0.5% acetic acid) was chosen, due to the wide range of results, for the remaining experiments. Ibuprofen, our known tablet, gave a similar Rf value to our previous results for Ibuprofen. For Anadin extra, there were three compounds identified as Caffeine, Paracetamol and Aspirin as the Rf values of the drug were close to the values of these three compounds in the first part of the practical. For both of these known drugs, the Rf values acquired were close to my predictions before the experiment. For the unknown powder, we obtained Rf values of 0.52 and 0.76 so we believe that the unknown powder contains Aspirin and Ibuprofen.
Infrared observation works best for tracking relatively newer planets that give off more heat. Gravitational involves microlensing on the other hand works better for cooler planets. Gravitational microlensing involves
Noisy, and uncooperative students make Frank doubt the technique of using partners. Without success, Frank’s past two attempts of the lab need change. The first attempt separated the activity into stations, but this idea failed severely. While the second attempt required the students to do one process, a period seemed to work on paper, it was a recipe for
Habitable planets are scarce but one will be filled with hope as it will become a home for the human race for millenniums to come; for now it seems Proxima b will have that honor. One of the most historic tools for space-bound research, the telescope is making astronomical bounds in assistance of astronomy research. The Hubble telescope is without a doubt the most influential telescope of all time. While not being the most powerful piece of equipment engineering has to offer, it has played the largest role of any telescope. “The Hubble Space Telescope is not the most prolific exoplanet hunter at astronomers ' disposal, but it has made unique and significant contributions to the discovery and study of dozens of far-off worlds.
In almost all cases, they are too far away to be seen by a telescope. Two notable methods used to detect exoplanets are the Doppler Method and Transit Method. Doppler Shift Method The doppler shift method works by analysing the doppler effect that occurs when a planet orbits its star. The doppler effect is when a small mass, such as a planet orbits around a larger mass, such as its star, which will cause a shift or wobble as both masses have a gravitational pull towards each other, thus they will both orbit a common central point.
Corotto, F., Ceballos, D., Lee, A., & Vinson, L. (2010). Making the Most of the Daphnia Heart Rate Lab: Optimizing the Use of Ethanol, Nicotine & Caffeine. The American Biology Teacher , 176-179. The purpose of this article was to test the effects of chemicals on Daphnia magna.
Greta Warren – Lab Group 2 Date of practical - 24/10/2014 / Date of submission – 13/11/2014 Demonstrators – Shane and Tara Effect of interference on reaction times in a colour identification task tested in undergraduates __________ words ABSTRACT A phenomenon known as the Stroop Effect, discovered by J. R. Stroop in 1935, was tested among a sample group of 54 undergraduate psychology students, of mixed gender and varying age range. Stroop found that reaction time in identifying a colour was significantly increased when presented in the form of a word describing a different or incongruent colour. 144 words, divided into four levels of congruence were presented on a computer monitor to each participant, who were then asked to respond as quickly
The purpose behind laboratory eleven was to learn about Lewis and VSEPR structure and use these to determine molecular geometry, electron geometry and polarity. According to our book, Chemistry the Central Science, “Molecular geometry is the arrangement in space of the atoms of the molecule.” And, “Electron geometry is the three dimensional arrangement of electrons around an atom according to VSEPR modeling.” Once these models were determined, it was easy to determine the shape of the molecule and whether the molecule is polar or nonpolar. If there is an error in the experiments likely resulted from my inability to use the balloons.
The astronomers who are working in the Kepler program were able to find that nearly twenty percent of all stars are Sun-like. This information provides that planets that are in the stars’ gravitational field are potentially habitable. The closest of these habitable zones is only about twelve light years away; one hundred twelve thousand, seven hundred forty years at twenty five thousand miles per hour. This particular habitable zone and its planets can even be seen by the naked eye. In total, of what we can see with telescopes and astronomical tools of that sort and interstellar machines, we know that there are approximately sixty billion habitable planets as of today.
In xxx I experimented with light reflecting on the surface of the water in a sea cave and how it shimmers on the rocks and other