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How Big Are Things?
Home     Welcome
small Real
world

big     solar system between galaxy
nano
micro
meter
kilo
Mega
Giga
Tera
Peta
Exa
  kilometer's Room - looking at a sheet of graph paper
  km = 103 m
look at the entire room
 
galaxy21
 20
19
local stars18
 17
16
between15
 14
13
E's orbit12
 11
10
sun9
 8
7
texas6
 5
4
hood3
 2
1
you0
 -1
-2
salt grain-3
 -4
-5
bacteria-6
 -7
-8
atom-9
103 m    1 km
104 m    10 km
105 m    100 km


US Census Tiger Map Server

Their "Scale" may not say 1:1000000 because they assume a 75bpi screen.

miles (mi)
0
10
20
30
40
50


src (under Active Fire Maps)


(c) MapQuest.com
average atmosphere
10% and 50% pressure heights
crust

height
air pressure

temperature

visible horizon at eye-height; 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 acres

(106 is a million)

Earth's crust - thickness:



Crustal thickness maps:
Global, another, ; North America; histograms

Maximum thickness results from a "double" crust - one plate pushed under another.

oceanic
~min / ~ave / ~max
continental
~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 meterfloor. 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".

... ?...?
neutron star

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