Word Finder - hemisphere

definition

Half of the celestial sphere, as divided by either the ecliptic or the celestial equator .

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A realm or domain of activity .

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Half of the Earth, such as the Northern Hemisphere, Southern Hemisphere, Western Hemisphere or Eastern Hemisphere, Land Hemisphere, Water Hemisphere etc. .

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Any half-sphere, formed by a plane intersecting the center of a sphere. .

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A map or projection of a celestial or terrestrial hemisphere .

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Either of the two halves of the cerebrum. .

You know what hemisphere you'll be in when you leave?

The foot now protrudes below the mouth, and the post-oral hemisphere of the trochosphere grows more rapidly then the anterior or velar area.

Don't you rule the eastern hemisphere?

As a rule the genera of the northern hemisphere differ from those of the southern.

The whole story points to a general distribution of flowering plants from the northern hemisphere southwards.

Here we may probably find the lowest temperatures of the northern hemisphere.

The family is unrepresented in the western hemisphere.

The chief agents in determining the climate are the vast masses of water in the southern hemisphere and the elevation of the land.

Its medieval importance as an intermediary of trade between Europe and the East was greatly impaired by the opening of the Red Sea route, and finally abolished by the Suez Canal; and Syria is at present important mainly for the sentimental reason that it contains the holiest places of Judaism and Christianity, and for the strategic reason that it lies on the flank of the greatest traderoute of the eastern hemisphere.

In tropical regions, where Leguminosae is the leading order, grasses closely follow as the second, whilst in the warm and temperate regions of the northern hemisphere, in which Compositae takes the lead, Gramineae again occupies the second position.

The only countries where the order plays a distinctly subordinate part are some extra-tropical regions of the southern hemisphere, Australia, the Cape, Chili, &c. The proportion of graminaceous species to the whole phanerogamic flora in different countries is found to vary from nearly 4th in the Arctic regions to about 2 nth at the Cape; in the British Isles it is about y2th.

No tribe is confined to one hemisphere and no large genus to any one floral region; facts which indicate that the separation of the tribes goes back to very ancient times.

The best known and by far the largest division of the Gymnosperms is that of the cone-bearing trees (pines, firs, cedars, larches, &c.), which play a prominent part in the vegetation of the present day, especially in the higher latitudes of the northern hemisphere; certain members of this class are of considerable antiquity, but the conifers as a whole are still vigorous and show but little sign of decadence.

Certain species of the southern hemisphere genus Dacrydium afford particularly striking instances of heterophylly, e.g.

The chief home of the Coniferales is in the northern hemisphere, where certain species occasionally extend into the Arctic circle and penetrate beyond the northern limit of dicotyledon ous trees.

He therefore insisted that England should be required not merely to pay damages for the havoc wrought by the " Alabama " and other cruisers fitted out for Confederate service in her ports, but that, for " that other damage, immense and infinite, caused by the prolongation of the war," the withdrawal of the British flag from this hemisphere could " not be abandoned as a condition or preliminary of such a settlement as is now proposed."

Thus, the velocity across a little hemisphere of sand only z in.

This process, in effect, leaves each orifice surrounded by a hemisphere of coarse sand across which the water flows with comparative freedom from a larger hemisphere where the corresponding velocity is very slow, and where the presence of finer and more obstructive particles is therefore unimportant.

The junipers, of which there are twenty-five or more species, are evergreen bushy shrubs or low columnar trees, with a more or less aromatic odour, inhabiting the whole of the cold and temperate northern hemisphere, but attaining their maximum development in the Mediterranean region, the North Atlantic islands, and the eastern United States.

It is not till the early Eocene that mammals become a dominant type in the northern hemisphere.

The remaining marsupials (namely the families Didelphyidae and Epanorthidae) are American, and mainly South and Central American at the present day; although during the early part of the Tertiary period representatives of the first-named family ranged all over the northern hemisphere.

The beavers (Castoridae) are restricted to the northern hemisphere, whereas the dormice (Gliridae) and the mole-rats (Spalacidae) are exclusively Old World forms, the latter only entering the north of Africa, in which continent the former are largely developed.

Lastly, among the Duplicidentata, the picas (Ochotonidae or Lagomyidae) form a group confined to the colder or mountainous regions of the northern hemisphere.

Its original home was probably in the northern hemisphere; and it has no representatives in Madagascar.

The dogtribe (Canidae), on the other hand, are, with the exception of Madagascar, an almost cosmopolitan group. Their place of origin was, however, almost entirely in the northern hemisphere, and not improbably in some part of the Old World, where they gave rise to the bears (Ursidae).

The latter are abundant throughout the northern hemisphere, and have even succeeded in penetrating into South America, but, with the exception of the Mediterranean zone, have never succeeded in entering Africa, and are therefore of course unknown in Madagascar.

The birthplace of the group was evidently in the northern hemisphere - possibly in east Central Asia.

Elsewhere they occur in South America and throughout a large part of the northern hemisphere, where they appear to have survived in India to the later Oligocene or Miocene.

So far as is at present known, the earliest and most primitive group, the Condylarthra, is a northern one, but whether first developed in the eastern or the western hemisphere there is no sufficient evidence.

Climate,-In accordance with its southerly position and the variety in its superficial configuration, Spain presents within its borders examples of every kind of climate to be found on the northern hemisphere, with the sole exception of that of the torrid zone.

Having seen how the Glossopteris flora of the south gradually spread to the north in the Permian period, we may now take a brief survey of the succession of floras in the northern hemisphere, which have left traces in Mesozoic rocks of North America, Europe and Asia.

In turn each cerebral hemisphere is divided by fissures into five lobes.

Unless you live in the southern hemisphere in which case I wish you a hot and summery Christmas.

Each hemisphere of the brain has some specialized functions, a poorly-understood phenomenon called brain lateralization.

In the late nineteenth century Paul Broca, a French neurosurgeon, identified an area of the left hemisphere that has a major role in the production of speech.

Carl Wernicke, a German neurologist, identified another region in the left hemisphere that was responsible for language comprehension.

Broca suggested that people's handedness was the opposite of their language-specialized hemisphere, so that a person with left-hemisphere language specialization would be right-handed.

Brain lateralization-A function that is dominated by either the left or the right hemisphere of the brain.

You will also find that you may need to move your aquarium as the stars move through various positions in your home, much like real star change positions in the hemisphere.

In the eastern hemisphere, the Rat is held in high regard.

The extraordinary abundance of Glossopteris in PermoCarboniferous rocks of Australia, and in strata of the same age in India and South Africa, gave rise to the term " Glossopteris flora for the assemblage of plants obtained from southern hemisphere rocks overlying beds containing Devonian and Lower Carboniferous fossils.

This flora appears to have abruptly succeeded an older flora in Australia and elsewhere, which was precisely similar to that of Lower Carboniferous age in the northern hemisphere.

Some examples of this genus, described by Etheridge from Permo-Carboniferous beds in New South Wales, differ in some respects from the ordinary form, and bear a superficial resemblance to the Equise nected with a lowering of temperature and the prevalence of glacial conditions over a wide area in India and the southern hemisphere.

This continental area has been described as " Gondwana Land," a tract of enormous extent occupying an area, part of which has since given place to a southern ocean, while detached masses persist as portions of more modern continents, which have enabled us to read in their fossil plants and ice-scratched boulders the records of a lost continent in which the Mesozoic vegetation of the northern hemisphere had its birth.

The genera Lepidodendron, Sigillaria, Stigmaria, or Calamites, which played so great a share in the vegetation of the same age in the northern hemisphere, have not been recognized among the Palaeozoic forms of India, but examples of Sigillaria, Lepidodendron and Bothrodendron are known to have existed in South Africa in the Permo-Carboniferous era.

While a few similar or even identical types may be recognized in both floras, there can be no doubt that, during a considerable period subsequent to that represented by the Lower Carboniferous or Culm rocks, there existed two distinct floras, one of which had its headquarters in the northern hemisphere, while the other flourished in a vast continental area in the south.

The Coal-bearing strata which occupy a considerable area in China (Map A, II.), contain abundant samples of a vegetation which appears to have agreed in their main features with the Permo-Carboniferous floras of the northern hemisphere.

Amalitzky found in beds of Upper Permian age in the province of Vologda (Russia) (Map A, V.) species of Glossopteris and Naeggerathiopsis typical members of the Glossopteris flora, associated with species of the ferns Taeniopteris, Callipteris and Sphenopteris, a striking instance of a commingling in the far north of the northern hemisphere Permian species with migrants from " Gondwana Land."

The Permo - Carboniferous beds of South Africa, India and Australia are succeeded by other plant-bearing strata, containing numerous species agreeing closely with members of the Rhaetic and Jurassic floras of the northern hemisphere.

There is, however, a marked difference, as regards the floras as a whole, between the uppermost Palaeozoic flora of the northern hemisphere and such species as have been recorded from Lower Triassic beds.