The Science Alphabet Game

VercigenariX February 28, 2010, 8:57am 61

Etymology.

Now here is something completely unrelated.

ShawnMerrow February 28, 2010, 9:28am 62

en.wikipedia.org

Nuclear fusion

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or absorption of energy. This difference in mass arises due to the difference in atomic "binding energy" between the atomic nuclei before and after the reaction. Fusion is the process that powers active or "main sequence" stars, or other...

LadyOfWicca March 1, 2010, 11:32am 63

Gluon

en.wikipedia.org

Gluon

and A gluon (/ˈɡluːɒn/) is an elementary particle that acts as the exchange particle (or gauge boson) for the strong force between quarks. It is analogous to the exchange of photons in the electromagnetic force between two charged particles. In layman's terms, they "glue" quarks together, forming hadrons such as protons and neutrons. In technical terms, gluons are vector gauge bosons that mediate strong interactions of quarks in quantum chromodynamics (QCD). Gluons themselves carry the color c...

ShawnMerrow March 1, 2010, 3:54pm 64

en.wikipedia.org

Heliosphere

The heliosphere is the vast, bubble-like region of space which surrounds and is created by the Sun. In plasma physics terms, this is the cavity formed by the Sun in the surrounding interstellar medium. The "bubble" of the heliosphere is continuously "inflated" by plasma originating from the Sun, known as the solar wind. Outside the heliosphere, this solar plasma gives way to the interstellar plasma permeating our galaxy. Radiation levels inside and outside the heliosphere differ; in particular,...

shadycat March 1, 2010, 9:11pm 65

Inselberg

en.wikipedia.org

Inselberg

An inselberg or monadnock (/məˈnædnɒk/) is an isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain. In Southern Africa a similar formation of granite is known as a koppie, an Afrikaans word ("little head") from the Dutch diminutive word kopje. If the inselberg is dome-shaped and formed from granite or gneiss, it can also be called a bornhardt, though not all bornhardts are inselbergs. The word inselberg is a loan word f...

LadyOfWicca March 1, 2010, 10:52pm 66

Junctional diversity

en.wikipedia.org

Junctional diversity

Junctional diversity describes the DNA sequence variations introduced by the improper joining of gene segments during the process of V(D)J recombination. This process of V(D)J recombination has vital roles for the vertebrate immune system, as it is able to generate a huge repertoire of different T-cell receptor (TCR) and immunoglobulin molecules required for pathogen antigen recognition by T-cells and B cells, respectively. The inaccuracies of joining provided by junctional diversity is estimated...

slickwolfie March 1, 2010, 11:57pm 67

Kuiper Belt- The outer region of our solar system where former planet Pluto, and other ice dwarfs/minor planets, orbit the Sun.
SLick

ShawnMerrow March 2, 2010, 12:05am 68

en.wikipedia.org

Lagrangian point

In celestial mechanics, the Lagrangian points (/ləˈɡrɑːndʒiən/ also Lagrange points, L-points, or libration points) are the points near two large bodies in orbit where a smaller object will maintain its position relative to the large orbiting bodies. At other locations, a small object would go into its own orbit around one of the large bodies, but at the Lagrangian points the gravitational forces of the two large bodies, the centripetal force of orbital motion, and (for certain points) the Co Th...

shadycat March 2, 2010, 12:13am 69

Moraine

en.wikipedia.org

Moraine

A moraine is any glacially formed accumulation of unconsolidated glacial debris (regolith and rock) that occurs in both currently and formerly glaciated regions on Earth (i.e. a past glacial maximum), through geomorphological processes. Moraines are formed from debris previously carried along by a glacier, and normally consist of somewhat rounded particles ranging in size from large boulders to minute glacial flour. Lateral moraines are formed at the side of the ice flow and terminal moraines at ...

ShawnMerrow March 2, 2010, 12:45am 70

en.wikipedia.org

Near-Earth object

A near-Earth object (NEO) is any small Solar System body whose orbit brings it to proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU). If a NEO's orbit crosses the Earth's, and the object is larger than 140 meters (460 ft) across, it is considered a potentially hazardous object (PHO). Most known PHOs and NEOs are asteroids, but a small fraction are comets. There are over 20,000 known near-Ear...

LadyOfWicca March 2, 2010, 4:18am 71

Osmosis

en.wikipedia.org

Osmosis

Osmosis (/ɒzˈmoʊ.sɪs/) is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides. It may also be used to describe a physical process in which any solvent moves across a selectively permeable membrane (permeable to the solvent, but not the solute) separating two solutions of different concentrations. Osmosis can be ma Osmosis is a vi...

ShawnMerrow March 2, 2010, 6:02am 72

en.wikipedia.org

Planet

Shown in order from the Sun and in true color. Sizes are not to scale. A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.[b] The term planet is ancient, with ties to astronomy, history, science, mythology, and even religion, as planets and stars regarded as divine by many early culturess. Five planets in the So...

LadyOfWicca March 2, 2010, 7:54am 73

Quantum chromodynamics

en.wikipedia.org

Quantum chromodynamics

In theoretical physics, quantum chromodynamics (QCD) is the theory of the strong interaction between quarks and gluons, the fundamental particles that make up composite hadrons such as the proton, neutron and pion. QCD is a type of quantum field theory called a non-abelian gauge theory, with symmetry group SU(3). The QCD analog of electric charge is a property called color. Gluons are the force carrier of the theory, like photons are for the electromagnetic force in quantum electrodynamics. The ...

shadycat March 2, 2010, 8:35am 74

Relative dating

en.wikipedia.org

Relative dating

Relative dating is the science of determining the relative order of past events (i.e., the age of an object in comparison to another), without necessarily determining their absolute age (i.e. estimated age). In geology, rock or superficial deposits, fossils and lithologies can be used to correlate one stratigraphic column with another. Prior to the discovery of radiometric dating in the early 20th century, which provided a means of absolute dating, archaeologists and geologists used relative dati...

ShawnMerrow March 2, 2010, 8:55am 75

en.wikipedia.org

Solar wind

The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona. This plasma mostly consists of electrons, protons and alpha particles with kinetic energy between 0.5 and 10 keV. The composition of the solar wind plasma also includes a mixture of materials found in the solar plasma: trace amounts of heavy ions and atomic nuclei C, N, O, Ne, Mg, Si, S, and Fe. There are also rarer traces of some other nuclei and isotopes such as P, Ti, Cr, Ni, Fe 5...

LadyOfWicca March 2, 2010, 10:07am 76

Thermodynamics

en.wikipedia.org

Thermodynamics

Thermodynamics is a branch of physics that deals with heat and temperature, and their relation to energy, work, radiation, and properties of matter. The behavior of these quantities is governed by the four laws of thermodynamics which convey a quantitative description using measurable macroscopic physical quantities, but may be explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to a wide variety of topics in science and engineering, especially physic...

shadzar March 2, 2010, 2:37pm 77

[spoiler]shadycat wrote:

[quote]Relative dating

http://en.wikipedia.org/wiki/Relative_dating[/quote]

That is only allowed in West Virginia right?[/spoiler]

Uvula

en.wikipedia.org

Palatine uvula

The palatine uvula, usually referred to as simply the uvula , is a conic projection from the back edge of the middle of the soft palate, composed of connective tissue containing a number of racemose glands, and some muscular fibers. It also contains many serous glands, which produce thin saliva. The muscular part of the uvula (Latin: musculus uvulae) shortens and broadens the uvula. This changes the contour of the posterior part of the soft palate. This change in contour allows the soft palate t...

ShawnMerrow March 2, 2010, 3:59pm 78

en.wikipedia.org

Voyager program

The Voyager program is an American scientific program that employs two robotic probes, Voyager 1 and Voyager 2, launched in 1977 to take advantage of a favorable alignment of Jupiter, Saturn, Uranus, and Neptune. Although their original mission was to study only the planetary systems of Jupiter and Saturn, Voyager 2 continued on to Uranus and Neptune. The Voyagers now explore the outer boundary of the heliosphere in interstellar space; their mission has been extended three times and they con...

shadzar March 2, 2010, 8:08pm 79

en.wikipedia.org

Wild type

Wild type (WT) refers to the phenotype of the typical form of a species as it occurs in nature. Originally, the wild type was conceptualized as a product of the standard "normal" allele at a locus, in contrast to that produced by a non-standard, "mutant" allele. "Mutant" alleles can vary to a great extent, and even become the wild type if a genetic shift occurs within the population. Continued advancements in genetic mapping technologies have created a better understanding of how mutations o Th...

Slowhand March 2, 2010, 8:59pm 80

X-ray Computed Tomography

en.wikipedia.org

CT scan

A CT scan, or computed tomography scan is a medical imaging procedure that uses computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional (tomographic) images (virtual "slices") of specific areas of a scanned object, allowing the user to see inside the object without cutting. The 1979 Nobel Prize in Physiology or Medicine was awarded jointly to South African American physicist Allan M. Cormack and British electrical engineer Godfrey N. Houns...

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