|DEVELOPMENT DRAFT The only stable URL is http://www.vendian.org/howbig/.|
Comments encouraged - firstname.lastname@example.org (Mitchell Charity)
|How Big Are Things?
|kilometer's Room - looking at a sheet of graph paper|
|look at the entire room||
US Census Tiger Map Server
Their "Scale" may not say 1:1000000 because they assume a 75bpi screen.
10% and 50% pressure heights
at 10 m;
at 100 m;
(distance to horizon is ~100 × sqrt(height)) src
(neglecting topography of course. eg, in smooth seas)
|Wildfire (Arizona, June 2002)
(zoom out 10x)
Image (1 MB) from here.
About 300 thousand acres burned.
(106 is a million)
Earth's crust - thickness:
Crustal thickness maps:
Global, another, 2° North America; histograms
Maximum thickness results from a "double" crust - one plate pushed under another.
~min / ~ave / ~max
~ave / ~max
|atmosphere (ave 10% and 50% pressure heights)
mean ocean depth
ocean crust (mostly 7±1 km)
|land height (maximum and average)|
|ocean depth (max, ave)|
Antartic ice sheet
|Rule of thumb:|
atmosphere presure decreases by about 1/3 per 7 km.
1/27 (4%), 1/9 (10%), and 1/3 (30%)
Thumbnail of meter Room floor.
src, image This image is only very roughly aligned with the one below.
source This diagram stops at sea level - land surface height is not shown. :( Eg, Everest is this high.
Pacific crust decending under Oregon Info here.
There is a scale map on the floor.
Numbers are density (g/cm^3) - light rock floats higher.
You can see the thin blue ocean upper left. <- West, East ->
The "-100" depth under "Oregon" is a typo - it should of couse be "0".
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