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21 Cards in this Set
- Front
- Back
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Define iceage? |
An extended period of time when it is cold |
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What are the natural causes of Climate change? |
The earths orbit changes a small amount once ever 100,00 years.The amount of energy being radiated from the sun changes. Volcanic eruptions pump ash dust into the atmosphere blocking sun rays. Asteroid collisions cause material to block sun rays and cause fires which release CO2, causing a warming effect. Ocean current changing |
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What was the mini ice age? Where was it? How long did it last? |
It was a colder period in northern europe which started in the 15th century and ended in the mid 19th century. |
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What where the negative impacts from the little ice age on people? |
Crops did not grow well which meant people had to go hungry because there was less productivity and food. Trees growth was stunted by the cold weather. The winters were very cold and the summers were very short. |
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What was the most likely cause of the little ice age? |
It was most likely caused by natural changes, not humans because there was not enough people or an industry to cause such a mass effect. Instead it could have been caused by fewer sunspots or volcanic ash in the atmosphere. |
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How can you retrieve such data which tells us about the little ice age? |
We can tell this from diaries, newspapers and paintings from that era. Also trees will have thinner rings on there trunk when it has been a colder year. |
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What are Megafauna? |
Big animals that typically weighted over 40kg such as the Wooly mammoth, giant beaver and sabre-toothed tiger. They evolved durning the ice age. |
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What happened once the ice age ended? |
Temperatures rose 5 degrees in 10,000 years. |
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Why did Megafauna die out? |
They couldn't adapt to the change in temperature to a warmer climate and subsequently became extinct. Hunting by early humans could also have been a factor. |
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What happens as a country develops? |
More greenhouse gases are produced and released into the atmosphere. |
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Why is more carbon dioxide produced? |
-There is more industry -more energy is needed so more fossil fuel is burned -transport increases so more vehicles on the road are consuming petrol/diesel |
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What factors effect the UK climate? |
Latitude affects how much sun the uk gets and how strong it is durning each season.The North Atlantic current keeps the UK warmer than other places with the same latitude. The prevailing winds from the Atlantic Ocean in the south west can pick up moisture from the sea and often bring rain to the UK |
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What are the possible changes to the UK climate? |
Average temperature rise. Less predictable rainfall patterns with drier summers. Changing season - possibly longer summers and more extreme cold winters. |
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What factors could cause the UK climate to change? |
The North Atlantic current is likely to move which will probably reduce sea temperatures and bring less rainfall. More air masses will come from the north, bringing more storms and perhaps more extreme cold in winter. The paths which bring rain may be altered by these changes in air masses and ocean currents |
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What are the environmental impacts of climate change? |
The rising sea levels will lead to a loss in coastal land and increased erosion. More severe storms and longer summer droughts. Fishes may move to different waters changing the fishing industry. A chanage in the ecosystem could mean some plant and animal species will move into new areas and new (invasive) species would emerge.Warmer temperatures could encourage diseases such as malaria. |
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What are the economic impacts of climate change? |
Damage to cities such as London from flooding would be extremely disruptive and expensive. Warmer weather may mean farmers can grow different crops. Hotter summers could mean people spend more holidays here and not go overseas. Cost of protecting places from flooding will be expensive and in some cases not practical. |
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What would happen if CO2 levels kept on increasing? |
Global temperatures would rise by 6oC or more. Millions of people would lose their home due to rising sea levels. Changes to world weather patterns would cause extreme weather such as droughts and storms which would lead to famines. Animal and plant species would not be able to adapt fast enough to the changes. |
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What would happen if CO2 levels went back to normal? |
Global temperature will not rise above 2 degrees. Sea level might rise up by 1m causing coastal flooding, more storms and hurricanes. Some species may become extinct and others would shift to new zones. |
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Describe Bangladesh's location? |
A low lying country. |
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What are the environmental impacts of climate change on Bangladesh? |
The already severe river flooding would become worse from the heavier rainfall, increasing sea levels. Tropical storms could become more of a common occurrence, and possibly move inland causing more destruction. The already long dry season could cause more droughts. |
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What are the economic impacts of climate change on Bangladesh? |
More river flooding could cause damage to people's homes and more disruption to lives and the economy. Shrimp farming is very important but rising sea temperatures may damage this form of aquaculture. The flooded farm land would become infertile by the salt water. Flooding will increase the spread of water-borne diseases. |
