Showing posts with label Education. Show all posts
Showing posts with label Education. Show all posts

Friday, November 9, 2007

College Entrance Examinations – The PSAT What?

Gene Grzywacz

Starting in high school the counselors, teachers and parents all start using acronyms. Now life is difficult enough and now everyone is throwing all these initials around expecting you to not only know what they mean, but to score well on them. Well never, fear, there are many college bound students in the same boat as you that are wondering what the heck a PSAT really is. Seriously, you should know what these initials are by now, but you still may not have a good grasp on what it really involves. This article will serve as a guideline and help you better understand this test that you are headed toward.


PSAT or Preliminary Scholastic Aptitude Test


The PSAT is kind of a practice test that helps students determine their placement and how much preparation they need before they take on the SAT. This can give you a good idea of how the questions are worded, what is expected and if the test is easy or difficult for you. Some students make the mistake of believing that because they aced the PSAT that the SAT will be the same and never even study. That is not advisable and it may be that you got lucky with the PSAT. So always, make sure that you prepare before any exam, unless you just have money and early mornings to blow!


The PSAT is made up of two reading sessions, two math sessions and one writing session. The questions are multiple choice or guess, as many prefer to say except for the writing portion of the test. The allotted time for the test is a little over two hours, but not everyone takes that long and others need the entire time. Two hours is not the maximum given, but only a guideline.


The reading sessions are approximately twenty-five minutes apiece and involves critical reading, vocabulary as well as determining the relationship between words. The most important part of the reading section of the PSAT is to ensure that you read the sections carefully. There are fifty questions in the reading section so it is important to adhere to a time schedule. Hurrying through this part of the exam will lower your score, because there might be a trick or two! Pace yourself to ensure that you are not carelessly answering the questions, but that you are not taking too much time either. Those taking the PSAT today will not have those all famous analogies to look forward to as they have been eliminated, darned of luck!


The math sessions are approximately twenty-five minutes apiece and consist of word problems, algebra, graphs, geometry and statistics. The match section consists of thirty multiple-choice questions and ten grid questions. Performance on the math section can be enhanced greatly with practicing and brushing up on math skills with a good PSAT preparation guide.


The writing section of the PSAT involves a thirty-minute allotment where the test taker is expected to answer questions based on a given writing sample. The student will answer multiple choice questions based on finding mistakes, poor sentence structure and other grammatical errors. The best way to prepare for the writing section of the PSAT is to practice with the given exercises in the PSAT study guide. There are thirty-nine questions that must be answered in thirty minutes in the writing section. Warning: many first time students fail the writing portion of the exam because they blow this section off.


A perfect score on the PSAT is eighty and the lowest is a twenty. Most students that are still in high school that take the exam score about a fifty. This could be greatly improved if the students made use of reference material. The mind gets better with practice and certainly over time, so it is imperative to study for the PSAT and SAT. On the Internet you will see a ton or study guides, courses and tapes that will raise your score. Many of these products will, but you need to make sure that you are getting a proven product. So, how do you know if it is proven or not. Look at the testimonials of other students, if there are no testimonials, avoid making the purchase. If others have benefited from the product than it is safe to assume that you can do the same.


Most high schools begin trying to get their junior and senior classes to take the PSAT. This is a great time to take the test to begin preparing in the areas that you need help in or scored poorly. If you start preparing early you can eliminate some of the stress and possibly even get more of an opportunity for financial aid and/or scholarship money. The quicker you have the SAT results the more likely you are to be granted money, that you don’t have to pay back. So, do not wait or put off taking the PSAT, consider it a practice and preparation for the SAT.


There are also several practice tests on the Internet, but are not all that you will need to prepare for the PSAT or SAT. Granted the free practice tests can give you an idea of the test type questions, but it is not a good preparation strategy. Do not fall into the "cannot afford it trap", find a way because the test is not cheap and you do not want to waste the money failing the test!


About the Author:



Gene Grzywacz teaches study skills and test taking to serious students. View other college tips by Gene.



Article Source : www.iSnare.com

April Birthstone - Diamond

Suravi Tripathy

"By far the most precious and coveted of the birthstones, diamonds are formed deep within the earth where there is enough intense heat and pressure for carbon to crystallize. Diamonds are the main choice for engagement rings. The diamond also symbolizes the 10th and 60th years of marriage.


Diamonds are so beautiful that ancient Greeks believed they were splinters of stars that had fallen to earth. Some even believed that there were tears of the Gods. The exact origin of diamonds is a mystery to scientists and geologists.


India is thought of as having the first large source of diamond mining. Ancient Hindus called the diamond Vajra, meaning lightening because of the sparks of light that it emits as well as its incredible strength. By far the most beautiful stone on the planet, it is also known as the hardest substance in the world.


Diamonds are found today in Australia, Botswana, Russia, and South Africa.


For quite some time diamonds have been known for having certain medicinal properties. In the middle ages gemstones were thought to heal illness if the person took the diamond in their bed with them.


It is believed that Cupid’s arrows were tipped in diamonds so it makes sense that over the years this beautiful stone has gotten a reputation as being the gift of love.


Diamonds used to be reserved for only royalty and others who were entitled to their symbolism of strength and courage. In 1477 Archduke Maximillian of Austria gave a diamond ring to Mary of Burgundy and set a tradition of diamond engagement rings.


Interestingly enough early Egyptians believed that the vena amoris also known as the vein of love ran directly from the heart to the third finger on the left hand.


Giving a diamond for any reason is sure to be appreciated."


About the Author:



Published by http://MiltonGems.co.uk. Find a vast selection ofApril birthstone jewllery, as well as other great Birthstone jewellery..



Article Source : www.iSnare.com

How Smoke Alarms Work

James Gregory

Ever looked up at the ceiling, saw your smoke alarm and thought, "I wonder how that works?" Well, the first thing to understand is that there are two basic smoke alarm designs. The first and the most commonly used design is nuclear powered and is known as an ionisation smoke detector, these require little space are cheap and are more common than the other type of detector, which is the photoelectric smoke detector.


Ionisation Smoke Alarms


At the heart of an ionisation smoke detector is a small amount of radioactive material called Americium 241, along with two plates with opposite electrical polarity. This sensor arrangement is held in an air flowing metal chamber and along with its support electronics is powered by a long life battery, usually 9-volt. The metal chamber acts as the negative plate; a positive plate covers the Americium 241.


So how does an ionisation smoke alarm work? Well, alpha particles are generated by the Americium element, these alpha particles ionise the nitrogen and oxygen atoms that circulate through the smoke detector. This simply means that electrons are stripped from both the nitrogen and oxygen elements, when this happens the "air" inside the smoke detector becomes positively charged. These "air" atoms are drawn to the negative (metal chamber) plate, while the negatively charged electrons are drawn to the positive plate. As long as this process continues the smoke alarm will not activate. However, when smoke enters the device it interferes with the ionisation process and the alarm is triggered. Ionisation smoke alarm detectors are considered sensitive enough to do their job correctly and robust enough to last several years under normal operating conditions.


Should you worry about radioactive Americium 241?


Being radioactive does mean that it produces radiation, however the amount is very small. Moreover, the type of radiation emitted is in the form of alpha particles, which are the weakest type of radiation. A sheet of paper can stop alpha particles. The metal canister that holds the Americium is more that capable of containing any harmful radiation. You should however make sure that any discarded ionisation detectors are properly disposed of, check with your local authority or council to find out the preferred method in your area.


Photoelectric Smoke Alarms


These are probably the least popular type of smoke detector; this is down to the fact that they're not as sensitive as an ionisation detector. They function by employing two channels; one emits light, while the other channel detects the light. If smoke finds it way into the channels it will interfere with the light and trigger the alarm.


The type of smoke alarm you choose really depends on the application. While ionisation detectors are seen as the preferred choice, they perform best in detecting fast flaming fires with small smoke particles. Optical sensor smoke alarms on the other hand perform best at detecting slow, smouldering fires with large particles. It's recommended that you fit a combination of the two types of smoke alarm to your home, preferably interconnected. It's possible to string together several smoke detectors to form an impressive smoke alert system.


What ever you do install some smoke alarms today. They're cheap, easy to fit and could save you and your family's life


About the Author:



James Gregory reviews and writes about security products. Please visit http://www.sentelsecurity.co.uk/smoke-co-alarms.php to see smoke alarms like the ones mentioned in this article.



Article Source : www.iSnare.com