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- Industrial Revolution (30001 bytes)
1: ...t of all-metal machine tools in the first two decades of the nineteenth century enabled the manufactur...
3: ...wth of the [[internal combustion engine]] and the development of [[Electric power|electrical power gen...
5: ...red to the [[Neolithic revolution]], when mankind developed [[agriculture]] and gave up its [[nomad|no...
10: ...he accompanying development of international [[trade]], creation of [[financial market]]s and accumula...
12: ...h often imposed tolls and [[tariff]]s on goods traded among them. - Heart (10132 bytes)
1: ...Image:Heart_crca.jpg|thumb|right|230px|Image provided by [http://classroomclipart.com Classroom Clip A...
3: ... language|Greek]] ''kardia'' (καρδια) for "heart".
7: ... a sac known as the [[pericardium]] and is surrounded by the [[lung]]s. In adults, it weighs about 300...
9: A thick muscular wall, the [[septum]], divides the right atrium and ventricle from the left atr...
15: ...takes places and the blood releases [[carbon dioxide]] into the lung cavity and picks up [[oxygen]]. T... - Lung (7057 bytes)
1: ...right|230px|Illustration of the lungs. Image provided by [http://classroomclipart.com Classroom Clip A...
2: ...o exchange [[oxygen]] from air with [[carbon dioxide]] from [[blood]]. The process in which this happe...
15: ...tself is also able to expand and contract to some degree.
17: ...and end in [[alveoli]] which are tiny sacs surrounded by [[capillary|capillaries]] filled with blood. ...
19: The deoxygenated blood from the [[heart]] reaches the lu... - Harmonium (4268 bytes)
5: ...mon in the late 19th century, replacing the [[melodeon]]. It was used as a practice instrument by orga...
9: ...[[Alexandre Debain]], though there was concurrent development of similar instruments.
15: ...ollowers of the [[sikh]] faith, who use it it the devotional singing of prayers, called [[kirtan]]. In...
20: ...Tulsidas Borkar of Mumbai. More and more music students are learning in this fashion.
22: ...llows inflates an internal reservoir bellows inside the harmonium from which air escapes to vibrate t... - Netherlands (35958 bytes)
1: ...arch]], located in northwestern [[Europe]]. It borders the [[North Sea]] to the north and west, [[Belg...
7: native_name = Nederland |
18: government_type= [[Democracy|Dem.]] [[Constitution|const.]] [[monarchy]] |
19: leader_titles = [[Dutch monarch|Queen]]<br>[[Prime mini...
20: ...he Netherlands|Beatrix]] <br> [[Jan Peter Balkenende]] | - Oregon (26551 bytes)
21: DensityRank = 39<sup>th</sup> |
22: 2000Density = 13.76 |
23: AdmittanceOrder = 33<sup>rd</sup> |
26: Latitude = 42°N to 46°15'N |
27: Longitude = 116°45'W to 124°30'W | - Swing (seat) (996 bytes)
4: ...en suspended from the same [[metal]] or [[wood|wooden]] frame, known as a '''swingset''', allowing mor...
6: ...ded on both sides by ropes from a tree branch. Older children can go much higher, sometimes over 15 f... - Carnivorous plant (44834 bytes)
1: ...e ]]A '''carnivorous plant''' is a [[plant]] that derives some or most of its
16: *Bladder traps, which suck in prey with a bladder that generates an internal vacuum; and
22: most [[sundew]]s, whose leaves undergo rapid growth, aiding in the retention and
27: Pitfall traps have evolved independently on at least four occasions. The simplest pitf...
29: ...enus, the leaves are quite clearly evolutionarily derived from a simple - Lysosome (2936 bytes)
1: ...the rest of the [[cell (biology)|cell]], from the degradative enzymes within the lysosome. The digesti...
9: ...form of [[programmed cell death | programmed self-destruction]] of the cell, which means that the cell...
10: ...tions include digesting foreign bacteria that invade a cell and helping repair damage to the [[plasma ...
12: ...ub>2</sub> gangliosidoses]], [[lipid storage disorder]]s, [[glycoproteinosis|glycoproteinoses]], [[muc... - Vacuole (5544 bytes)
1: ...cell size. The cavity that is the vacuole is considered nonprotoplasmic and the contents classified as...
4: ...s in different organisms and these functions include the capture of food, the maintenance of internal ...
6: ...ach of these functions in different organisms are described below.
14: ... more than 80% of the cell interior. It is surrounded by a membrane, called the '''tonoplast'''.
15: ...uoles may vary in different tissues and stages of development. [[vascular cambium|Cambium]] cells, for... - Windmill (7108 bytes)
1: ...dmills on the Greek Island of Myconos. Image provided by [http://classroomclipart.com Classroom Clipar...
2: ...engines used to [[pump]] [[water]] on farms and modern [[wind turbine]]s for generating [[electricity]...
8: ...tury, apparently from technology gained by [[crusader]]s who came into contact with windmills in the M...
12: ...vast areas of North America, which were otherwise devoid of readily accessible water. They contribute...
14: ...d downward through a pole or rod to the pump cylinder below. - Photosynthesis (9830 bytes)
1: ...t is meant to be very nontechnial and accessible. Details come later. -->
3: ...oduce food. Ultimately, nearly all living things depend on energy produced from photosynthesis for th...
6: ... from them. Most notably, they use [[carbon dioxide]] gas and water to produce sugars and [[oxygen]] ...
10: ...plex sequence of steps, and are very different in detail.
12: ...llen leaf. Areas where green chlorophyll has been destroyed now appear yellow]] - Radon (12616 bytes)
2: {| border="1" cellpadding="2" cellspacing="0" align="right...
4: {| align="center" border="0"
23: | [[Density]], [[Mohs hardness scale|Hardness]]
40: | [[van der Waals radius]]
49: | [[Oxidation state]]s ([[Oxide]]) - Reptile (14659 bytes)
10: ...bdivision | color = light blue | plural_taxon = Orders}}
14: Suborder [[Lizard|Sauria]] - Lizards<br/>
15: Suborder [[Snake|Serpentes]] - Snakes<br/>
17: Superorder [[Dinosaur|Dinosauria]]<br/>
23: ...membrane]]). Today they are represented by four orders: - Earthworms (15728 bytes)
12: ...Haplotaxidae]]. Folk names for earthworm include "dew-worm" and "angleworm."
14: ...ers. The haplotaxids have been traditionally considered microdriles. The megadriles are characterized...
18: ... greyish blue ''[[Allolobophora caliginosa]]'' is deeper burrowing.
27: ..., except for lacking the sexual structures, which develop later. Some earthworm species are mostly [[...
30: ...he surface to travel more quickly than they can underground, thus colonizing new areas more quickly. ... - Renewable energy (27996 bytes)
1: ... Neither fossil fuels nor nuclear power are considered to be renewable. For a discussion of this, ple...
3: ... long time-scale, are exploited at rates that may deplete these resources in the near future (see: [[H...
9: ...gy use in modern societies see [[Renewable energy development]].
11: == Defining renewable ==
12: ...s energy sources that don't technically meet this definition. - Solar cell (27643 bytes)
1: ... consisting of a large-area [[p-n junction]] [[diode]], which, in the presence of [[sunlight]] is capa...
5: ...r_cell.png|thumb|250x|right|A '''solar cell''', made from a poly-crystalline silicon wafer]]
15: ...2662&RS=PN/2402662 US2402662], "''Light sensitive device''"). Sven Ason Berglund had a prior patent co...
19: ... electric power output to the light power input. Ideally, near the equator at noon on a clear day, the...
21: ...rial for solar cells (and all other semiconductor devices) is crystalline [[silicon]]. Crystalline sil... - Steam engine (17867 bytes)
3: ...eds a boiler to boil [[water]] to produce steam under pressure. Any [[heat]] source can be used, but t...
6: ... machine sutherland steam fire engine. Image provided by [http://classroomclipart.com Classroom Clip A...
7: The first steam device, the [[aeolipile| ''aeolipile'']], was invent...
9: ... same period. Early industrial steam engines were designed by [[Thomas Savery]] ([[1698]]), [[Thomas N...
11: Early engines worked by the [[vacuum]] of condensing steam, whereas later types (such as [[steam ... - Boulton and Watt (684 bytes)
1: ...[Matthew Boulton]]''' and '''[[James Watt]]''', made [[steam engine]]s at their [[Soho Foundry]] in [[...
3: The oldest working Boulton and Watt engine is the [[Smethw...
7: ...n [[Sydney]], [[Australia]], houses the world's oldest working rotative steam engine, built by Boulton... - Aquifer (10995 bytes)
1: An '''aquifer''' is an underground layer of [[water]]-bearing permeable rock,...
5: ...h one aquitard between them, surrounded by aquiclude) which is in contact with a [[stream]] (typical i...
8: ...ess than atmospheric pressure. The capillary head depends on the [[porosity]] of the soil, in [[sand]]...
13: ...se, as in a rural area, might be considered an inadequate ''aquitard'' for industrial, [[mining]], or ...
15: ...ressure area). Since there are less fine-grained deposits near the source, this is a place where aqui...
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