Edexcel A-Level Geography Glaciation Post Exam Questions And Complete Answers 2024.
Quarternary Ice Age Answer - Most recent ice age that started 2.6 million years ago with two epochs (Pleistocene and Holocene) Loch Lomond Stadial Answer - Last glacial advance in the UK 12,000-10,000 years ago in Scottish Highlands caused by Gulf Stream cut off by Lake Agassiz Little Ice Age Answer - Between when average temperatures were 1-2C cooler, resulting in glaciers re-advancing and abandoned settlements in Iceland Eccentricity Cycle Answer - Change in Earth's orbit from circular to elliptical every 100,000 years Obliquity Cycle Answer - Tilt of Earth's axis varies from 21.5 to 24.5 over 41,000 years, changing season severity Procession of the Equinoxes Answer - Earth's wobble causes the season in which the the Earth is closest to the Sun to change every 21,000 years Albedo Effect Answer - The reflection of solar energy from Earth Thermohaline Circulation Answer - Ocean current circulation that is driven by differences in temperature and salinity Short-term causes of climate change Answer - Volcanic sulphur dioxide emissions intensify Albedo and variation in solar output
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