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22 Cards in this Set
- Front
- Back
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which is more dangerous deep or shallow foci?
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a deeper focus is more deadly
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what is palaeomagnetism
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magnetic surveys of the ocean surface proved that sea floor spreading was a common phenomena and provided evidence of continental drift
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what are and how are hot spots formed
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hot spots are areas of volcanic activity with no correlation to plate boundaries, they are formed by plumes of magma origninating deep within the mantel erupting through the moving crust creating a row of islands from basaltic lava |
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what is the albedo effect |
the amount of energy reflected by the earths surface |
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anticyclone |
a high pressure weather system |
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coriolis effect |
the cause of weather patterns by deflection of moving objects causing circular weather patterns |
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depression |
a low pressure weather sstem |
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diurnal |
daily |
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hadley cell |
most central weather systems caused by convection and coriolis effect |
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polar cell |
most northerly weather systems caused by convection and Coriolis effect |
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ferrel cell |
most median weather systems caused by convection and Coriolis effect |
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insolation |
exposure to sun rays |
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hygroscopic nuclei |
a piece of dust in which water accumulates |
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troposphere |
the lowest occurring section of the atmosphere in which we live |
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stratosphere |
one of the two coolest sections of the atmosphere directly above the troposphere contains mainly ozone |
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mesosphere |
similar temperatures to the stratosphere this section has very few particles |
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thermosphere |
the highest level of the atmosphere this area begins to dramatically increase in temperature experiencing temperatures up to 1500 degrees celcius |
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urbanisation |
increase in proportion of people living in urban areas |
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millionaire cities |
a city which has a population of at least 1 million |
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mega cities |
a city which has a population over 10 million |
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world city |
a city located in an economically strategic location possibly giving it economic importance |
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global city |
a city which has a large impact on global economy |
