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SENTINEL TRIBUNE EDUCATION Wednesday, March 13, 2013 Page7 S(;HOOL MENU March 18-22, 2013 Monday: Grilled chicken/ Wheat bun, Romaine salad, broccoli, tomatoes, fruit, apricot, wheat bread, milk Tuesday: Beef taco/WG tortilla/salsa, refried beans, lettuce, tomatoes, corn, pears, fruit, wheat bread, milk Wednesday: Pork roast, mashed potatoes/gravy, broc- coli, carrots/Ranch dip, mixed fruit, peaches, wheat bread, milk Thursday: Meatball sub, multigrain Sun Chips, cauli- fornia blend, mixed green salad, fresh grapes, apple- sauce, milk Friday: Sausage pizza, cheese pizza, or alternate tuna macaroni salad, honey glazed carrots, pineapple, mandarin oranges, wheat bread, milk Kindergarten and preschool round-ups WWG Kindergarten Open House has been scheduled for Thursday , April 4, at 6:00 p.m. in the Walnut Grove School Kindergarten rooms. This meeting is for all students who will be five years old as of September 1, 2013. Please call 507-859-2141 with any questions. WWG Preschool Open House has been scheduled for Thursday, April 4th, at 6:00 p.m. in the Walnut Grove Elementary Preschool room. This is for children who are 3, 4, and 5 years old, but not attending Kindergarten this fall. Please call the Walnut Grove School Office at 507- 859-2141 to get your pre- schooler signed up for pre- school this fall. WWG preschool screening The Westbrook Walnut Grove Early Childhood Spring Screening will be held on Wednesday, April 3, starting at 8:00 a.m. in Walnut Grove. This screen- ing is for children 3, 4, and 5 years old who have not yet entered Kindergarten, or who have not already been screened. If you have not received a post card or infor- mational packet in the mail by Saturday, March 23, please call the school office at 507-859-2141, so we can schedule your child for screening. Minnesota State laws require all children entering Kindergarten to be screened. The state of Minnesota requires that all children must have developmental screening before Kindergarten. Even though .your child may not be attend- mg kindergarten the next school year, it is highly rec- ommended that all children starting at age 3 be screened to assure that their develop- ment and health are on track. There are different skills that a child should have mastered based on his/her age. For example, a 3 year old is not expected to do what a 5 year old does. It is in your child's best interest to be screened as early as possible in case there are concerns that need to be addressed before your child starts kindergarten. Please dress your child in comfortable clothes and shoes. You should plan on spending 45 minutes to an hour for screening. Please do not bring other children to the screening. During the developmental portion you and your child will be sepa- rated for approximately 15 minutes. You may want to prepare your child by assur- ing him/her that while you may be in another room, you will be close by. During the developmental portion you will be asked to fill out a social-emotional question- naire about your child. Parental informatio.n packets will be sent out the week of March 18. Again, if.. your child is 3, 4, or 5 years of age and has not yet been screened, please contact our school. If you are new to our communities, please call 507-859-2141 to set up a screening time. Please do not hesitate to call with any questions. 55 Alive/ Defensive Driving 8-Hour Course 55 Alive/ Defensive Driving 4-Hour Refresher Course Join others 55 and older to improve your over all driving skills. Upon com- pleting this course, you will receive a 10% reduction on your insurance. Certificates provided, please bring your current drivers license with you to class. Call Rachel Christians at the Westbrook School to register (507- 274-6111). Minimum of 20 people. The class will be held April 3, at the Westbrook High School from 4:00- 10:00 p.m. There is a charge for the class. Presenter will be Kathy Pederson. Anyone who has previ- ously taken AARP's 55 Alive 8-hour class is eli- gible to take the four hour refresher course to re-cer- tify for the 10% premium reduction. Please bring your current drivers license with you to class. Call Rachel Christians at the Westbrook School to register (507-274-6111). The class will be held May 7, at the Westbrook High School from 5:00- 9:00 p.m. There is a charge for the class and the pre- senter will be Kathy Pederson. 212914 Josh Bell formerly of a Dodge / GM dealership is now working at Klasse Sales and Service and specializes in: All late-model vehicle maintenance and repairs DodgeandGM Diesels Factory GM and Ford Scan tools Brakes, exhaust, and suspension Lowest prices on TIRES and Interstate Batteries uffi For best service at the lowest price call 501-274-6166 or stop in at Klasse Sales and Service on main street. No job too big. No job too small. 5 qt oil change and filter for $25 while our huge supply of bulk oil lasts fees/epa/taxes extra '.eek,0000+,enc + z by Douglas Clark The Oh-My- God Particle The Oh-My-God particle was an ultra-high-energy cosmic ray--most likely a proton--detected on October, 1991 in the skies over west- ern Utah. Its observation by the University of Utah's Fly's Eye Cosmic Ray Detector was a shock to astrophysi- cists, who estimated its ener- gy to be approximately 50 J. In other words, a subatomic particle with kinetic energy equal to that of a baseball traveling at about 90 kilome- ters per hour. The particle was traveling at almost the speed of light. Assuming it was a proton, its speed was only about 1.5 quadrillionth of a meter per second less than the speed of light. In other words, if it were in a race with a beam of light, the Oh-My-God parti- cle would fall behind only one centimeter every 220,000 years. The energy of this particle is some 40 million times that of the highest energy protons that have been produced by the Large Hadron Collider. However, only a small part of this energy would be avail- able for an interaction with another proton or neutron. Most of the energy would remain as kinetic energy. The effective energy available for such an interaction is still 50 times greater than the colli- sion energy of the Large Hadron Collider. Applying special relativity to such a fast particle yields some incredible results. Time passes more slowly as veloc- ity increases, and for anyone hypothetically travelling on the back of this particle time would nearly stop. For exam- ple, a trip to the Andromeda Galaxy, which is more than two million light years away, would have a perceived trav- el time of only three and a half minutes. Special relativ- ity also tells us that there is a length contraction in the direction of motion. If the Earth were somehow able to match the speed of the Oh-My-God particle, it would pancake down to a thickness of less than four hundredths of a millimeter! The University of Utah experiment relied on two telescopes searching the sky for the characteristic flashes of ultraviolet light that are produced when a cosmic ray collides with a molecule in Earth's atmosphere and cre- ates a shower of secondary particles. The two telescopes were covered in photomulti- plier tubes and looked like the compound eyes of a fly. By capturing almost all the light in the shower, they were able to make a good mea- surement of the particle's energy. These ultra-high-energy cosmic rays are very rare. Since the first observation, only about fifteen similar events have been recorded to confirm the phenomenon. What cosmic process trans- forms an ordinary particle into an Oh-My-God particle? A supernova or supermassive black hole might explain it, but when astronomers fol- lowed the impact track back to its source they found noth- ing unusual in that direction. 1) True or false: A cosmic ray is a form of electromag- netic radiation. 2) The Oh-My-God parti- cle was most likely a(n) ???. a) electron b) proton c) neutron d) alpha particle 3) True or false: Special relativity predicts that time slows down for an object that is moving. 4) The Fly's Eye detector searched for flashes of ??? light. 5) The ???? is more than two million light years away. Answers on page 2 Copyright (C) 2013 Weekly Science Quiz All rights reserved. Speech Tourney in Adrian The Jr. High and Sr. High Speech Teams from WWG traveled to Adrian on Saturday, March 2 to par- ticipate in the Dragon Invitational. Fifteen schools were rep- resented with over two hun- dred speakers participating. Following the three rounds of competition, the following WWG speakers were recognized at the awards ceremony. Serious Prose-Cindy Lohre- red ribbon of excellence Prose-Tessa Busswitz 4th place medal winner Humorous-Tommy Knudson-6th place medal winner ......... Creative Expression-Abe Her-blue ribbon of excel- lence Serious Drama-Zuag Paj Her -4th place medal win- ner The Speech Team travels to Luverne on March 16. Speech team participating in Adrian Submitted photo Register now for science and nature conference There's still room so reg- ister now to attend the 19th Annual Science & Nature Conference on May 15 at SMSU in Marshall. The conference is targeted for students in grades K-8 with strands for K-2, 3-5 and 6-8. Last year's conference drew over 1400 participants from 25 school districts. This number also included 280 participants from home schools and parents regis- tering their children on their own. If you're part of a school district, consider sending a class of students to this event in place of an end of school year field trip. Parents may also register their children on their own. The keynote speaker is Lonnie Dupre of Grand Marais, MN who will share interesting stories and great photographs of his polar travels with the audience. In addition to the key- note, the conference fea- tures 25+ hands-on topics. Students select the classes they're interested in. There will be great classes for stu- dents who are interested in rockets, planets, animals, DNA, chemistry, building, crime scene investigating, planetarium shows and much more. It is one of the largest single-day science conferences in the country for K to 8th grade students so register soon. Students must be pre- registered and accompanied by an adult to attend the conference. The early bird registration deadline is March 27 with the final reg- istration deadline on April 3. Register early for a better chance for your child to get the classes they're most interested in. The confer- ence brochure and registra- tion form are available on SW/WC Service Cooperative's website: www.swsc.org/studentac- tivities. If you have ques- tions, contact Andrea Anderson at andrea.ander- son@swsc.org or 507-537- 2257. The Westbrook Walnut Grove School hasdeclared surplus a 1995 Bluebird/IH bus with a V8 T444E diesel motor and automatic transmission with 174,000 miles. DOT inspected. An informal auction of the item will be held at the Westbrook School Supt. Office at 3448th Street at 6:00 p.m. Monday April 8th. Bus may be inspected at the Westbrook School during normal business hours. To arrange viewing, contact Stan Erickson at the school at 507-274-6111. 212956 SPRING PARTS SPECIAL! -k-k-k-k-k WESTBROOK AG POWER .-k-k-k-k I rln ial[ Kinze PARTS SPECIAL! February 25th-March 25th Sweeps, Filters & Oils 10% OFF u, To 26% OFF Stop in and test your Kinze meters on the Kinze test stand- only $2.50 per meter! (Parts and labor additional) WESTBROOK AG POWER www.westbrookag power.com ! Westbrook, MN ,, PH. 507-274-6101 Oe,od =,,-,,,,,,=,=.., m   e Service ,K Jf,_H i Center JWJlf'mb+O,A ' VILEW