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  2. Effects of high altitude on humans - Wikipedia

    en.wikipedia.org/wiki/Effects_of_high_altitude...

    The length of full hematological adaptation can be approximated by multiplying the altitude in kilometres by 11.4 days. For example, to adapt to 4,000 metres (13,000 ft) of altitude would require 45.6 days. [27] The upper altitude limit of this linear relationship has not been fully established. [6] [16]

  3. National Topographic System - Wikipedia

    en.wikipedia.org/wiki/National_Topographic_System

    A map sheet in the Southern zone spans half a degree of longitude, one in the Arctic zone spans a full degree, and one in the High Arctic zone spans two degrees. Each of these 1:50,000 sheets, in turn, was at one time split into eight 1:25,000 scale map sub-sheets, lettered as lower-case a to h, using the same boustrophedon pattern as the ...

  4. List of communities in Canada by elevation - Wikipedia

    en.wikipedia.org/wiki/List_of_communities_in...

    Community Province Elevation (m) Population (Year) [1]; Lake Louise: Alberta: 1,600 m (5,200 ft) [2] 691 (2011) [3]: Banff: Alberta: 1,400 m (4,600 ft) [2] 7,851 ...

  5. List of highest points of Canadian provinces and territories

    en.wikipedia.org/wiki/List_of_highest_points_of...

    However, the False Creek Tunnel, part of the Canada Line rail-based transit system in Vancouver, at 29 m (95 ft) below sea level, is the lowest publicly accessible point in Canada. [16] Parts of Richmond, British Columbia are below sea-level, though behind dikes.

  6. Armstrong limit - Wikipedia

    en.wikipedia.org/wiki/Armstrong_limit

    The Armstrong limit or Armstrong's line is a measure of altitude above which atmospheric pressure is sufficiently low that water boils at the normal temperature of the human body. Exposure to pressure below this limit results in a rapid loss of consciousness, followed by a series of changes to cardiovascular and neurological functions, and ...

  7. Geography of Canada - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Canada

    Canada covers 9,984,670 km 2 (3,855,100 sq mi) and a panoply of various geoclimatic regions, of which there are seven main regions. [9] Canada also encompasses vast maritime terrain, with the world's longest coastline of 243,042 kilometres (151,019 mi). [20] The physical geography of Canada is widely varied.

  8. Altitude - Wikipedia

    en.wikipedia.org/wiki/Altitude

    As the pressure gets lower, the temperature decreases. The rate of decrease of temperature with elevation is known as the adiabatic lapse rate, which is approximately 9.8 °C per kilometer (or 5.4 °F [3.0 °C] per 1000 feet) of altitude. [12] The presence of water in the atmosphere complicates the process of convection.

  9. Altitudinal zonation - Wikipedia

    en.wikipedia.org/wiki/Altitudinal_zonation

    Elevation, climate, and soil fertility set upper limits on types of crops that can reside in each zone. Populations residing in the Andes Mountain region of South America have taken advantage of varying altitudinal environments to raise a wide variety of different crops. [ 11 ]