How the Planet Shapes Us
Why Quito stays mild on the Equator, how straight lines carved Africa, and what keeps the Atacama bone-dry. 50 questions on geography's grip on human life.
Try 3 questions
1. Quito, Ecuador sits almost exactly on the Equator yet has a mild, spring-like climate year-round. The main reason is:
- Cold ocean currents push chilled air inland over the city
- Its altitude of roughly 2,850 metres offsets the tropical latitude
- Persistent cloud cover from the Amazon blocks most solar heating
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Answer: Its altitude of roughly 2,850 metres offsets the tropical latitude
Air temperature drops roughly 6°C per 1,000 metres of elevation, so high-altitude tropical cities like Quito, Bogotá and Addis Ababa have steady, cool 'eternal spring' conditions.
2. Why do the world's largest deserts, such as the Sahara and the Australian interior, cluster near 30° north and south rather than at the Equator?
- Those latitudes receive the most direct sunlight throughout the year
- Prevailing westerlies strip moisture away before it can condense there
- Air that rose and rained at the Equator descends there, dry and warming
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Answer: Air that rose and rained at the Equator descends there, dry and warming
The Hadley cell lifts moist air at the Equator, which dumps its rain and then sinks around 30°, where compression warms it and suppresses cloud formation.
3. Western Europe is far warmer in winter than Canadian regions at the same latitude. The key factor is:
- Warm Atlantic waters and prevailing winds carrying that heat ashore
- Europe's lower average elevation relative to North America
- The Alps shielding the continent from polar air masses
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Answer: Warm Atlantic waters and prevailing winds carrying that heat ashore
The North Atlantic Drift moves warm water northeast, and westerly winds carry that heat onto land, giving London milder winters than Labrador at the same latitude.
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