Answer book : fast facts about our world by National Geographic

By National Geographic

A multifaceted reference booklet for the twenty first century, the reply ebook will fascinate with up to date, authoritative, and ceaselessly fascinating information regarding the realm this present day. From earth sciences to astronomy, from weather and habitats to human arts and cultures, from old historical past to state of the art know-how, and together with short descriptions, flags, and information of the entire international locations of the realm, it grants precisely the type of quick-dip details that smooth readers crave. Maps, charts, diagrams, graphs, images, illustrations—some six hundred images in all—combine with enormous quantities of quickly evidence and brief items at the humans, locations, natural world, climate, heritage, and present occasions that subject in our international this day. nationwide Geographic resolution e-book is a crucial reference for faculty, a convenient source on the place of work, and a wonderful pick-up-and browse better half at domestic.

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Solar winds increase when solar flares peak. -. , M V; . M vo· iil::J 0.. ;:;. , vo "0 ~ (I) e:vo (I) (I) ::J a 3 vo c: ~ (I) o ~ 31 c: 8 ex:: w 5 hat does it take for something to z « be considered a planet? Accord- V1 ing to the definition established ME RCURY 35,983,606 miles by the International Astronomical VENUS Union, a planet is a spherical 67,232,363 miles object larger than 600 miles In diameter that orbits a star and has a strong enough gravitational pull to clear EARTH 92,957,130 miles MARS 141,635,996 miles JUPITER 483,426,788 miles SATURN 886,696,691 miles URANUS 1,783,950,479 miles NEPTUNE 2,795 ,082,966 miles the neighborhood around its orbit of debris.

Newer Landsat satellites have more data-gathering equipment, including a thematic mapper with •• resolution in seven spectral bands, or wavelengths of light. In 1985 Landsat became a private commercial enterprise but was transferred back to government control in 1992. New satellites are planned, including Landsat 8 in 20 I I. . » z Vl ~ m .. . HOW DOES GPS WORK? GPS-global positioning system-is a space-age version of triangulation. Originally developed for military use, GPS has three components: satellites orbiting Earth, master control stations around the world, and receivers installed in locations ranging from naval destroyers to private golf carts.

Newer Landsat satellites have more data-gathering equipment, including a thematic mapper with •• resolution in seven spectral bands, or wavelengths of light. In 1985 Landsat became a private commercial enterprise but was transferred back to government control in 1992. New satellites are planned, including Landsat 8 in 20 I I. . » z Vl ~ m .. . HOW DOES GPS WORK? GPS-global positioning system-is a space-age version of triangulation. Originally developed for military use, GPS has three components: satellites orbiting Earth, master control stations around the world, and receivers installed in locations ranging from naval destroyers to private golf carts.

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