|
National Middle School Science Bowl
The National Middle School Science Bowl is a middle school academic competition, similar to Quiz Bowl, held in the United States. Two teams of four students each compete to answer various science-related questions. In order to determine which student has the right to answer the question, a buzzer system (or "lockout system") is used, similar to those seen on popular television game shows such as ''Jeopardy!''. The National Middle School Science Bowl (" NMSSB") has been organized and sponsored by the United States Department of Energy since the competition's inception in 2002. Subject areas Questions are asked in the categories of Physical Science, Life Science, Earth and Space Science, Energy, and Mathematics. Although they are not subcategorized, the questions fall into the subcategories of Chemistry, Algebra, Computer Science, Biology, Physics, Astronomy, Geometry, and Current Events. The newest addition was a category specially made for the 2006 National competition: a group of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle School
A middle school (also known as intermediate school, junior high school, junior secondary school, or lower secondary school) is an educational stage which exists in some countries, providing education between primary school and secondary school. The concept, regulation and classification of middle schools, as well as the ages covered, vary between and sometimes within countries. Afghanistan In Afghanistan, middle school includes grades 6, 7, and 8, consisting of students from ages 11 to 14. Algeria In Algeria, a middle school includes 4 grades: 6, 7, 8, and 9, consisting of students from ages 11–15. Argentina The of secondary education (ages 11–14) is roughly equivalent to middle school. Australia No regions of Australia have segregated middle schools, as students go directly from primary school (for years K/preparatory–6) to secondary school (years 7–12, usually referred to as high school). As an alternative to the middle school model, some secondary schools classi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomy
Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Cell
A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen fuel, hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most battery (electricity), batteries in requiring a continuous source of fuel and oxygen (usually from air) to sustain the chemical reaction, whereas in a battery the chemical energy usually comes from substances that are already present in the battery. Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied. The first fuel cells were invented by Sir William Robert Grove, William Grove in 1838. The first commercial use of fuel cells came more than a century later following the invention of the hydrogen–oxygen fuel cell by Francis Thomas Bacon in 1932. The alkaline fuel cell, also known as the Bacon fuel cell after its inventor, has been used in NASA space programs since the mid-1960s to generate power for sat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Motors Corporation
The General Motors Company (GM) is an American multinational automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and was the largest in the world for 77 years before losing the top spot to Toyota in 2008. General Motors operates manufacturing plants in eight countries. Its four core automobile brands are Chevrolet, Buick, GMC, and Cadillac. It also holds interests in Chinese brands Wuling Motors and Baojun as well as DMAX via joint ventures. Additionally, GM also owns the BrightDrop delivery vehicle manufacturer, a namesake Defense vehicles division which produces military vehicles for the United States government and military; the vehicle safety, security, and information services provider OnStar; the auto parts company ACDelco, a namesake financial lending service; and majority ownership in the self-driving cars enterprise Cruise LLC. In January 2021, GM announced plans to end pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Renewable Energy Laboratory
The National Renewable Energy Laboratory (NREL) in the US specializes in the research and development of renewable energy, energy efficiency, energy systems integration, and sustainable transportation. NREL is a federally funded research and development center sponsored by the Department of Energy and operated by the Alliance for Sustainable Energy, a joint venture between MRIGlobal and Battelle. Located in Golden, Colorado, NREL is home to the National Center for Photovoltaics, the National Bioenergy Center, and the National Wind Technology Center. History The Solar Energy Research, Development and Demonstration Act of 1974 established the Solar Energy Research Institute, which opened in 1977 and was operated by MRIGlobal. Under the Jimmy Carter administration, its activities went beyond research and development in solar energy as it tried to popularize knowledge about already existing technologies, like passive solar. During the Ronald Reagan administration the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bracket (tournament)
A bracket or tournament bracket is a tree diagram that represents the series of games played during a knockout tournament. Different knockout tournament formats have different brackets; the simplest and most common is that of the single-elimination tournament. The name "bracket" is American English, derived from the resemblance of the links in the tree diagram to the bracket punctuation symbol ] or (called a "square bracket" in British English). The closest British term is draw, although this implies an element of chance, whereas some brackets are determined entirely by Seed (sports)">seeding. In some tournaments, the full bracket is determined before the first match. In such cases, fans may enjoy trying to predict the winners of the initial round and of the consequent later matchups. This is called "bracketology", particularly in relation to the NCAA Division I men's basketball tournament. This prediction is not possible in tournaments, such as the FA Cup and the UEFA Champ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tournament
A tournament is a competition involving at least three competitors, all participating in a sport or game. More specifically, the term may be used in either of two overlapping senses: # One or more competitions held at a single venue and concentrated into a relatively short time interval. # A competition involving a number of matches, each involving a subset of the competitors, with the overall tournament winner determined based on the combined results of these individual matches. These are common in those sports and games where each match must involve a small number of competitors: often precisely two, as in most team sports, racket sports and combat sports, many card games and board games, and many forms of competitive debating. Such tournaments allow large numbers to compete against each other in spite of the restriction on numbers in a single match. These two senses are distinct. All golf tournaments meet the first definition, but while match play tournaments meet the sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Elimination
A double-elimination tournament is a type of elimination tournament competition in which a participant ceases to be eligible to win the tournament's championship upon having lost ''two'' games or matches. It stands in contrast to a single-elimination tournament, in which only ''one'' defeat results in elimination. One method of arranging a double-elimination tournament is to break the competitors into two sets of brackets, the ''winners' bracket'' and ''losers' bracket'' (''W'' and ''L'' brackets for short; also referred to as ''championship bracket'' and ''elimination bracket'', ''upper bracket'' and ''lower bracket'', or ''main bracket'' and ''repechage'') after the first round. The first-round winners proceed into the W bracket and the losers proceed into the L bracket. The W bracket is conducted in the same manner as a single-elimination tournament, except that the losers of each round "drop down" into the L bracket. Another method of double-elimination tournament management i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round-robin Tournament
A round-robin tournament (or all-go-away-tournament) is a competition in which each contestant meets every other participant, usually in turn.''Webster's Third New International Dictionary of the English Language, Unabridged'' (1971, G. & C. Merriam Co), p.1980. A round-robin contrasts with an elimination tournament, in which participants/teams are eliminated after a certain number of losses. Terminology The term ''round-robin'' is derived from the French term ''ruban'', meaning " ribbon". Over a long period of time, the term was corrupted and idiomized to ''robin''. In a ''single round-robin'' schedule, each participant plays every other participant once. If each participant plays all others twice, this is frequently called a ''double round-robin''. The term is rarely used when all participants play one another more than twice, and is never used when one participant plays others an unequal number of times (as is the case in almost all of the major United States professional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homeschooling
Homeschooling or home schooling, also known as home education or elective home education (EHE), is the education of school-aged children at home or a variety of places other than a school. Usually conducted by a parent, tutor, or an online teacher, many homeschool families use less formal, more personalized and individualized methods of learning that are not always found in schools. The actual practice of homeschooling can vary. The spectrum ranges from highly structured forms based on traditional school lessons to more open, free forms such as unschooling, which is a lesson- and curriculum-free implementation of homeschooling. Some families who initially attended a school go through a deschool phase to break away from school habits and prepare for homeschooling. While "homeschooling" is the term commonly used in North America, "home education" is primarily used in Europe and many Commonwealth countries. Homeschooling should not be confused with distance education, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevy Chase, Maryland
Chevy Chase () is the name of both a town and an unincorporated census-designated place (Chevy Chase (CDP), Maryland) that straddle the northwest border of Washington, D.C. and Montgomery County, Maryland, United States. Several settlements in the same area of Montgomery County and one neighborhood of Washington include ''Chevy Chase'' in their names. These villages, the town, and the CDP share a common history and together form a larger community colloquially referred to as Chevy Chase. Primarily a residential suburb, Chevy Chase adjoins Friendship Heights, a popular shopping district. It is the home of the Chevy Chase Club and Columbia Country Club, private clubs whose members include many prominent politicians and Washingtonians. Chevy Chase was noted as "the most educated town in America" in a study conducted by the Stanford Graduate School of Education, with 93.5 percent of adult residents having at least a bachelor's degree. The name ''Chevy Chase'' is derived from ''C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Science
Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but was preserved in the Muslim world during the Islamic Golden Age and later by the efforts of Byzantine Greek scholars who brought Greek ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
