Why doesn't Jupitar have a lithosphere?
969659
One requirement for a lithosphere is that it be a solid shell that deforms through brittle failure.  Jupiter lacks this.  Although it has a solid core, it is not a lithosphere because it is the innermost structural portion of the planet and it does not deform.  This is because Jupiter is composed mostly of gas.  Only at the center of the planet do the pressures become so great that solid matter takes form, and it is probably monolithic, a single solid piece, very different from Earth's lithosphere that floats on an inner molten layer.
784871
Well, maybe a little, but if they have it, it is really old and altered.  Below is a link to the geologic map.
64853
First of all the world is not round it is an oblique sphereoid (basically a double ended pear shape.)\n\nThe force of gravity generated by the molten core of the planet acts in all directions equally at any one point in the planet.  This attracted the material from space that formed earth following the Big Bang.  This would form a spherical object.\n\nThe rotation of the planet complicates thia as the equator is rotating faster than parts of the Earth that are further away from the equator, the poles rotate the slowest.  This disparity causes greater centripidal forces to be experienced at the equator than at the poles so the earth bulges out at the centre.
338480
That is a good & interesting question.\n\nIn all logical aspects, this should occur due to the fact that everything in nature trys to balance out. This includes things like air pressure; it travels from high to low areas of pressure. In the same manner, everything that is uphill or of higher elevation trys to balance w/ those that are of lower elevation; hence erosion & drainage basins in general.\n\nIn order for this to occur, a lot of sediment would have to be washed into the drainage basin's streams & rivers. That would take a very long time.\n\nAlthough I think the answer here has to do with the fact that the earth's crust rebounds in a process called isostatic adjustment.\n\nWhen material is removed from the crust to another location, weight is taken off of an area. The crust will readjust to the former height by rising slightly.\n\nIt's just like placing several blocks of wood in a container of water. As you take off one of the blocks, the rest of them will rise in response to the reduced load.\n\nThats my answer & I'm sticking to it.\n\n:)
101906
Right; it's the North Star. The reason it doesn't move is that it's in the direction of the earth's rotation; that is, if you extended a line through the north and south pole, you'd get pretty close to that star. Everything else just rotates around that point.\n\nHere's a neat photo of what this looks like; the North Star is in the center of the swirls:\n\n  http://www.gdargaud.net/Climbing/Utah/StarRotation.jpg\n\n\nYou might want to put this in the Astronomy/Space category, by the way.
345281
None, at least no natural ones.  There may be artificial satellites sent there though.
255515
They are geologically separated by a tectonic plate boundary. The fact that it runs across land and is on sight one continuous land mass is not an issue.\nIt's the same as India being referred to as the Sub-continent. India is very firmly attached to Asia but again it sits on a separate plate and is not actually part of Asia even if it is moving towards it thereby creating the greatest mountain range in the world.
884879
Because the earth is round, and if you made your flat map a oval(circle), the oceans would connect and become one!
581483
Dudes, the eqeator or prime meridian do NOT go THROUGH the center of the earth AT ALL!\n\nThe answer is Axis, duh.
1092524
That has absolutely no sense at all...\n\nHow do you think the Rocky Mountains and the Andes were formed but by millions of years of earthquakes????\n\nWas it hot then?\n\nOf course not! Some of them occured during the glacial era. No SUVs then!\n\nStop listening to stupid people such as Greenpiss!!!
981733
As to the age of the earth, lets look at the rock granite.  Granite forms the layer of rock from beneath sedimentary rocks to the mantel of the earth.  Russians have been working in the science of drilling deep holes.  They have been able to drill down six miles, and still find that the rock is granite.  They believe that the granite goes down at least 12 miles. Now all granite contains trillions of what are known as Polonium Halos.  Polonium (Po) is a radioactive element with three different isotopes.  Polonium breaks down by emitting alpha particles.  It is these particles that are trapped in the granite and make the halos.  Now in order for these halos to occur, the mother element (i.e. Polonium) must be present in the solid granite.  Once the Polonium is encased in the solid granite and the alpha particle is given off the Halo is formed.  There is no question from any qualified scientist that the Halos are formed this way.  Now here is the problem for evolutionists, who say that the earth is millions or even billions of years old.  The half-lives of the Polonium isotopes are extremely short.  One is only a few seconds; the second is only three minutes and the third is just over a day.  The second isotope produced the overwhelming majority  of halos that we see.  This means that all the Polonium atoms were encased in SOLID granite within a three-minute interval.  This means that ALL the granite in the world was produced in about 3minutes.  Now before you say impossible, this is consistent with the nature of granite.  You see if you heat granite to a molten state, when it cools and solidifies it becomes another rock.  Granite cannot come from a molten state.  However, evolution teaches that the earth was molten for millions of years.  How can anybody indicate that evolution is a fact when its teachings are at complete odds with observed science?
462582
the missisippi doesnt normally but it has before. sometime in the early 1900's (i cant remember when) a large earthquake, i think in the mossouri region, actually shifted the earths crust enough for it to run backwards for a short time. this was isolated however and has only happened once in recorded history
329853
The earth is on an axis so the sun doesnt cover the northern and southern regions as well ........i meant the polar regions in this statement
114510
Like pauliegone said, the lithosphere does in a way seperate the crust from the mantle.  The tectonis plates (crust) are supported by this semisolid layer.  However, the lithosphere is considered, by some scientists, part of the mantle.  So, it depends on which scientists you believe, although I believe that pauliegone is correct.
62403
Must be another geologist!\n\nLook up the paper in GeoRef.\n\nFind it in the library or get it on interlibrary loan.\n\nLet us know if you find gold or diamonds!
646534
because they never went.\n\nthey have satellite images of mars rovers (tracks in the sand an all!), but not of the lunar landing artifacts.\n\nactualy i'd like to challenge any astronomers out there with the biggest telescopes to zoom in on the landing site during an eclipse or whenever there is no sunlight shinning on it. let's see what comes up.
1081316
The reponse is related to plate tectonics. The earth crust is composed of a larger number of plates that float, very slowly of course, over the liquid interior. Continents therefore move relative to each other. When two plates meet, generally one moves under the other and it is here that we find mountains and volcanoes.\n\nWhat relation with oceans? Well, between some of the plates there is an upwelling of new magma, new crust. This is for instance the case in the middle of the Atlantic Ocean. The new crust needs room and pushes the plates on the left and right away: the Americas are moving to the west, while Europe and Africa are moving to the east. \n\nOceans (ah, at last!) are watermasses in which such upwelling of fresh crust takes place. An ocean therefore is partly in two or more different plates. On the other hand, seas are bodies of water that are on one continental plate only, or on two plates were no new crust is formed.\n\nHere is a pictures of the different continental plates:\n http://en.wikipedia.org/wiki/Image:Plates_tect2_en.svg