Changing Climate Flashcards
Pattern of climate change to present day
Last 2.6 million years, fluctuation, glacial and interglacial periods
Now temperatures are higher overall despite fluctuation
How are sea ice positions evidence for climate change
Maps and photos show a 10% decline in arctic sea ice
How are ice cores evidence of climate change
Layers of water molecules from diffrent periods of time can reflect fluctuating temps
How is global temperature data evidence for climate change
NASA suggest global temps have risen by over 0.6°c
How are paintings and diaries evidence of climate change
Personal accounts on peoples observations
How are sunspots causes of natural climate change
Dark spots which increase the amount of energy the earth receives
How are volcanic eruptions causes of natural climate change
The release of gas block out sunlight, cooler global temperatures
How are milankovitch cycles causes of natural climate change
Eccentricity-changes in earths orbit
Obliquity-changes of earths tilt on axis
Precession-amount the earth wobbles on its axis
Natural greenhouse effect
Solar radiation hits the earth, some reflected into space, greenhouse gases trap the rest, keeps the earth warm
Enhanced greenhouse effect
Fossil fuels (burned by humans) make the earths atmosphere thicker, traps more solar radiation, less reflected, earth warms up
Global impacts of climate change
Social- extreme weather- severe tropical storms, flooding
Economic- food supply- harder to produce reliable food source, increase in pricing
Environment- warmer temps, no habitats, extinction
Impacts of climate change in the uk
Social- extreme rainfall- floods damadge to homes
Economic- tourism- holiday destination, new jobs, improves economy
Environmental- new wildlife drawn to warmer temps, increase of biodiversity
