Climate Change (OCR GCSE Geography A (Geographical Themes)): Flashcards
📚Flashcards
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Practise the cards
13 cards from this deck
How often is a new ice layer formed?
How often is a new ice layer formed?
Each year
What trapped in ice shows past temperature?
What trapped in ice shows past temperature?
Trapped gases
How far back does Antarctic ice core show?
How far back does Antarctic ice core show?
400,000 years
When did accurate temp records start?
When did accurate temp records start?
1850s
What tool measures temp since 1850s?
What tool measures temp since 1850s?
Thermometers
Where is pollen preserved?
Where is pollen preserved?
Sediment at bottom of lakes
How does pollen evidence show past climate?
How does pollen evidence show past climate?
Similar plants lived in similar conditions
How often does a tree form a new ring?
How often does a tree form a new ring?
Each year
When are tree rings thicker?
When are tree rings thicker?
Warm, wet conditions
How far back do tree rings show climate?
How far back do tree rings show climate?
10,000 years
What is climate change?
What is climate change?
Significant change in Earth's climate over long period
What is global warming?
What is global warming?
Rapid increase in global temperatures
What caused the recent global warming?
What caused the recent global warming?
Human-induced