Geography Test 2

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Name 3 milankovitch cycles and how they work
Orbit- 100,000 years circular to oval shape path closer or further from sun Tilt- 40,000 year time frame changes by 3 degrees small tilt=less extreme seasons summers cool winters mild Wobble- 23,000 years axis wobbles one extreme to another seasons
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How can volcanic eruptions cause a natural change in climate?
dust contains sulphur dioxide, mixes with water, reflects sunlight, further cooling , blocking sunlight
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What is the enhanced greenhouse effect?
increase of greenhouse gases due to human activity causing a greater increase in global temps
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Explain a global, social impact of climate change
Decreased rain and increased temperatures can lead to crop shortages in some parts of the world leading to malnutrition and starvation
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Explain a social impact of climate change specific to the UK
increased flooding in coastal areas
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How can ice cores be used to tell us about past climates and how reliable is it
The gases trapped in the ice from years last can show CO2 concentrations from that year, giving us temperature readings , very reliable because its primary data
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what is the greenhouse effect and how does it work
sun gives off radiation, some reflected back to space, most radiation makes through layer of greenhouse gas, earth warmed, some reflected off, some energy absorbed by greenhouse gas, reflected back to earth, the thicker the layer more energy trapped
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p2 to previous slide
therefore more warming of the earth
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Explain a global, environmental impact of climate change
Some species are in decline due to warming temperatures such as coral which is being bleached
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Explain an economic impact of climate change specific to the UK
warmer temp causes better summer causing more tourism
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How has human activity impacted the world’s climate?
cattle farming, deforestation, burning fossil fuels
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what is meant by quaternary period
The last 2.6 million years of Earth's history
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what does climate change mean
Significant change in the Earth's climate over a long period
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what is meant by glacial period
A colder period in Earth's history
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what is meant by interglacial period
A warmer period in Earth's history
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explain sun spots
Sun spots increase the Sun's output of energy, last every 11 years, the amount of Sun spots present can impact the Earth's temperature to a degree
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Other cards in this set

Card 2

Front

How can volcanic eruptions cause a natural change in climate?

Back

dust contains sulphur dioxide, mixes with water, reflects sunlight, further cooling , blocking sunlight

Card 3

Front

What is the enhanced greenhouse effect?

Back

Preview of the front of card 3

Card 4

Front

Explain a global, social impact of climate change

Back

Preview of the front of card 4

Card 5

Front

Explain a social impact of climate change specific to the UK

Back

Preview of the front of card 5
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