can we balence earth on a needle?
552732
Interesting Question.. any way my answer is that u can balance anything on a needle, the only condition is that u should know the point at which the centre of gravity of that object is located... if u know the centre of gravity of earth then definately u can balance it on a needle... centre of gravity is nothing but a point where the weight of the object is concentrated.. For Example : A spinning top has its centre of gravity on the point which is touching the ground.. hope u have understood.
195332
If you want to fake a moon-log you will also need someone who did it at your exact same latitude.  The tilt of the moon (not phase, just tilt) varies with the observer's latitude on the earth.\n\nSuch a shame... almost everyone forgets that little fact, and hence fail badly when they fake their observation journals.
163366
Yes with a gaussmeter.
192375
I would suggest trying methods where you do have a hole to confirm results.  For example, light is reflected (and refracted?) at every surface and thickness of a transparent media where there is a change in density or crystal structure.  You may be able to shine a light (at night or under a blanket?) to detect the bottom of the ice and compensate for refraction where the actual thickness may differ from apparent thickness.  Use a ladder to spread your weight if the strength of the ice may be marginal.  Would a laser pointer work better than a flashlight?  Good luck.
825270
Planets and stars can both twinkle, its called astronomical scintillation.  In short it is caused by fluctuation in air density and temperature.  Since stars and light both send light to earth (planets reflect a stars light whereas the star produces it's own) the twinkling effect can be seen in either.  And thus if you were standing on another planet, it IS possible that earth would appear to twinkle.  It's not guarenteed, but if the light coming from earth passed through some varying densities and temperatures it could appear to twinkle.  Refer to this article for more on "twinkling":\n\nhttp://en.wikipedia.org/wiki/Scintillation_%28astronomy%29
1060985
A compass would be useless at the magnetic poles.  That's because compass needs not only point north, but they also align themselves with Earth's magnetic field.  In the low latitudes, a compass needle will be more or less parallel to the surface.  Near the magnetic pole, though, the compass needle will try to point "into" the ground, following the lines of force; being incapable of that, it will no longer be useful.
1187708
its about being an earthing? i dunno ty for 2 :D
184255
The best thing would be a copper wire attached to a metal bar into the earth. Other choice would be the gorund wire in an electrical outlet (careful not to hit live wires) or to a rubber mat on a concrete floor
196622
I pierced a candle with the needle and carefully placed the needle on water surface. It floated well. \n\nThis due to the surface tension effect.\n\nNext I did with another needle without wax coating. This time it floated once in many trials.\n\n\nNext I placed the needle on a piece of blotting paper and placed it on the surface of water. The blotting paper in few seconds went inside leaving the needle floating.
613637
NO.\nTechnically speaking if you travel on the earth in on a single vector you would not end up in the same place because in order to do so you would be constantly changing your vector. Technically speaking.
1122646
NO!  Normally yes, but right up near the MAGNETIC north OR the magnetic South, it varies.\n\nIf you are between the true north and the magnetic North, the end of the other needle can spin or point to the true North.
363234
Well, it seems like someone hacked into AskJeeves, because I became so curious about your question that I went to AskJeeves. \n\nAnyway, visit this page:\n\nhttp://www.askforkids.com/web?q=Why+does+Earth+move+on+a+tilted+axis%3F\n\nPerhaps it shall work on your computer. Whenever I click on the result, it visits the page temporarily and then suddenly goes to a different page, which seems to want to advertise, though it's under construction.\n\nGreat question!\n\nI personally believe that if the Earth did not use a tilted axis, it would not have electromagnetic fields across it. This would vary the different compositions of materials, and though I do not have very much knowledge about this, it probably would mean that humans could not survive, because humans use electromagnetic forces for various things.
1047988
Not that I know of. If there were, I'm sure it would cost a lot to do it. There is, however, a way you can look at the earth from above and see it as a snapshot! (Snapshots taken from satellites!)\n\nEarth.Google.com\n\nYou do have to download a free program and install it, but I spent about two weeks of my spare time looking at places I've never been, or haven't been in a long time. Places like the Eiffel Tower, Grand Canyon, Mt. Rushmore. I also went places I go all the time, like my house. I noticed the picture was taken years ago because it showed construction going on that has been completed a while.\n\nIt's fun, but sorry it's not streaming video. It's not even that up to date, but you can go see things that don't change much!
805739
http://www.earthsunmoon.com/products/item.php/P11/1
21709
The link below is to a moonbow in epod (earth picture of the day).\n\nEnjoy!
572981
yes.\nKeep it clean -this is earth, not Uranus
715593
yes in theory a small laser can be attached to nano machines to cut through matter, but we dont have the ability to create them yet.\n\nHowever, this is  not the best solution to destroying a meter, we could simply nuke it, or divert its dirrection if its in earths path