Physical Geography (AQA A) 3.0 / 5 based on 1 rating ? GeographyGCSEAQA Created by: Hannah StockCreated on: 02-06-13 21:36 Give 2 differences between oceanic and continental crust Continental crust is thicker and less dense 1 of 30 Give 2 differences between composite and shield volcanoes Shield volcanoes are only made up of lava and they are flatter than composite volcanoes 2 of 30 Why has mining in the Alps decreased? It's declined due to cheaper, foreign alternatives 3 of 30 How are ocean trenches formed? An oceanic plate is subducted under a continental (less dense) plate 4 of 30 Give 2 differences between a supervolcano and a normal volcano Supervolcanoes have a caldera and cover a much larger area than normal volcanoes 5 of 30 What is the difference between an epicentre and a focus? A focus is the point where the earthquake starts and the epicentre is the point on the crust directly above the focus. 6 of 30 Give a difference between the richter scale and the mercalli scale The richter scale measures the magnitude of the earthquake where the mercalli scale measures its effects 7 of 30 What is a tsnumai? A long high sea wave caused by an earthquake or other disturbance. 8 of 30 When is UK temperature highest? In July and August 9 of 30 Why are places at a higher latitude colder than lower latitudes? The sun's heat energy is spread over more area because it's at a lower angle in the sky 10 of 30 Where do depressions form and in which direction do they move over the UK? Atlantic ocean and east 11 of 30 Which summer in the last 10 years was the wettest summer on record? Summer of 2007 12 of 30 Give 2 impacts on health of extreme weather in the UK (global warming) Heatwaves cause more death from heat exhaustion and flooding causes more death by drowning 13 of 30 By how much has average global temperature risen in the last 100 years? 0.9°C 14 of 30 Give 1 political and 1 environmental impact of global warming Coastal habitats could be lost from the rising sea levels and scarceness of water could result in wars between countries competing for water 15 of 30 By how much did the Kyoto Protocol want to reduce CO2 emissions by 2012? 5% below 1990 levels 16 of 30 What temperature does water have to be for a tropical storm to form? 27°C 17 of 30 Which way do tropical storms spin in the northern hemisphere? Anticlockwise 18 of 30 What is hydraulic action? Where the force of the water breaks rock particles away from the river channel 19 of 30 What is suspension? Where small particles like silt and clay are carried along by the water 20 of 30 Which two processes are required to make Ox-Bow lakes? Erosion and Deposition 21 of 30 What are levees (in terms of depositional river landforms)? Natural embankments along the edges of a river channel 22 of 30 Where do meanders develop? In the middle and lower courses of a river 23 of 30 How is a 'step' created in a river? Softer rock is eroded more than hard rock in the upper course 24 of 30 Give 2 factors that would result in a shorter lag time and more discharge Intense rainfall and Impermeable rock 25 of 30 How does snowmelt cause flooding? When lots of snow or ice melts lots of water goes into a river in a short space of time, increasing discharge and causing a flood 26 of 30 Give 2 human reasons for flooding Deforestation and building construction 27 of 30 Give a benefit and a disadvantage of flood warnings The impacts of flooding are reduced but they don't stop a flood happening 28 of 30 Give a benefit and disadvantage of dams and reservoirs They can be used for HEP but they are expensive 29 of 30 How much has water usage in the UK risen by in the last 25 years? 50% 30 of 30
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