OCR B Geography GCSE Changing Climate test questions with complete solution

Define climate change large scale, long-term shift in the Earth's temperature and precipitation patterns Define weather the day to day changes in atmospheric conditions Define climate the average weather conditions over time (usually calculated over a 30 year period) How long is the Quaternary period? the last 2.6 million years What has Earth's climate been like over the Quaternary period? ice ages What is an ice age or glacial period? a cold period in earth's climate associated with the build-up of snow and ice and the growth of ice sheets and glaciers What is an inter-glacial period? a warm period in earth's climate in-between glacial periods where conditions were much the same as they are today What is global warming? a trend associated with recent climate change involving a warming trend (0.85°C since 1880) What are some key pieces of evidence of climate change? 1. Global Temperature Records 2. Sea ice positions 3. Ice cores 4. Historical records How do ice cores show climate change? Trapped air bubbles in the ice show that CO2 levels have fluctuated from 180ppm to 280ppm over the las