Planet Earth contains three compositional layers- CORE‚ MENTLE & CRUST. Core: At the centre is the densest of the three layers‚ the core. The core is a spherical mass‚ composed largely on metallic iron‚ with lesser amount of nickel and other elements. Mantle: The thick shell of dense‚ rocky matter that surrounds the core is mantle. The mantle is less dense than the core but denser than the outer most layer‚ the crust. Crust: Above the mantle lies the thinnest and outermost layer‚ the crust
Premium Earth Water Plate tectonics
Experiment 1: TLC Analysis of Analgesic Drugs 1/23/2011 Purpose: The goal of this experiment is to test our knowledge and understanding of TLC analysis by having us do a TLC analysis of analgesics to figure out their main chemical components. Calculations: 1.) Rf = Distance spot traveled/ distance solvent traveled Results: Table 1: TLC Analysis Analgesic Drugs | Rf Value | Acetaminophen | 0.323 | Aspirin | 0.597 | Caffeine | 0.081 | Unknown 154 (Plate 1) | 0.081‚ 0.306‚ 0.597
Premium Aspirin Codeine Paracetamol
As stated above‚ humans have a need to be accepted by others and for this to happen‚ each individual within the group must share the same belief as the group.An experiment by Donna Webster and Arie Kruglanski showed that dissenters who voiced their opinion were rejected by the entire group and this explains that we tend to conform to behaviors around us for the sake of not being rejected(Kruglanski & Webster‚ 1991)
Premium Sociology Psychology Social psychology
controversial issue and continues to be so today. I will be portraying the facts of this study and discussing why I believe it was an acceptable experiment. The details of this case may offer further insight into the admissibility of experimenting on children as long as there is parental consent and the consenting parents are fully aware of all details of the experiment. According to Dictionary.com hepatitis is an “inflammation of the liver‚ caused by a virus or a toxin and characterized by jaundice‚ liver
Premium Infection Hepatitis Immune system
which makes enrollment in kindergarten compulsory before children can begin the traditional six years of primary school and adds two more years to high school. The Enhanced Basic Education Act of 2013‚ or the K-to-12 Act‚ establishes a “universal kindergarten” and introduces Grades 11 and 12 to high school education in public and private schools. Students will have to complete the extra education to qualify for university. Until this law’s enactment‚ the Philippines was the only country in Asia and
Premium High school Middle school Educational stages
The purpose of this lab was to determine if a there is a change in mass when a gas is produced and determine if gas has mass. To conduct this experiment‚ the group must be careful not to let the Alka-Seltzer tablet get wet before the bottle is closed by wiping the lip of the bottle and the cap so it remains dry‚ or risk gas escaping into the air and not being captured by the bottle. Also‚ the group must be sure to close the bottle tightly with the cap‚ because gas may escape this way as well. During
Premium Chemistry Water Oxygen
into a petri-dish and the cylinder removed and blotted with filter paper‚ throwing the liquid away from the petri-dish after each cylinder was removed. 7) The length and texture of each potato cylinder was recorded in a table. Discussion: In the experiment‚ I believe the phenomenon to take place is osmosis. Osmosis is the movement/diffusion of water molecules through a selectively permeable membrane from an area of high concentration of water molecules (high water potential) to an area of a low concentration
Premium Osmosis Cell wall Sodium chloride
English 10a 6 March 2012 Tuskegee Experiments This is possibly one of the most inhumane things to ever happen in the 20th century in the Untied States. The experiments that took place were the root of medical misconduct and blatant disregard for human rights that took place in the name of science. The ghastly medical expirements that took place between 1932 and 1972 was merely an observation of the different stages of syphilis. The men in these experiments for the most part were illiterate
Premium Medicine Tuskegee syphilis experiment Physician
In modern times‚ youth and beauty is an image seen everywhere. For example‚ a Versace billboard‚ magazine ad‚ TV commercial‚ all of which displays images of beautiful people. But what happens when this beauty fades? Shakespeare in his 12th sonnet talks about his experience and fading beauty. The purpose of this poem is to encourage a young man to not lose his beauty to the ravages of time. In order to do this‚ one must reproduce so beauty will live. In the first quatrain‚ Shakespeare begins
Premium Johnny Depp Facial hair Man
A Literature Review of K-12 Virtual Learning Communities Virtual learning environments‚ often referred to as online learning or e-learning‚ have proliferated both at the K-12 and the adult levels. Formal virtual learning communities (VLCs) at the K-12 level however‚ are relatively new phenomena. Traditionally‚ literature regarding online learning has focused largely on technology and learner-computer interaction. These isolated computer-mediated environments where the need for community and human
Premium Educational psychology Communication Education