. Flashcards

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1
Q

What is a natural event?

A

An event caused by the earth without social impact

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2
Q

What is a natural hazard?

A

An natural event that has a social impact

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3
Q

5 examples of natural events

A

Volcanic eruptions/earthquakes/storms/tsunamis/floods

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4
Q

Factors affecting risk from natural hazards

A
  1. Poverty
  2. Urbanisation
  3. Farming
  4. Climate change
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5
Q

Why live at risk from tectonic hazards

A
  1. Fertile soils
  2. Tourism
  3. Poverty
  4. Resources
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6
Q

Reducing the risks of tectonic hazards

A
  1. Monitoring
  2. Planning
  3. Prediction
  4. Protection
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7
Q

Proof of climate change

A
  1. Shrinking glaciers and ice sheets
  2. Rising sea levels
  3. Seasonal changes
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8
Q

Natural causes of climate change

A
  1. Volcanic activity-Emits sulphur dioxide, a greenhouse gas
  2. Earths orbit-Earth tilts from 21* to 23*
  3. Sun heat output-when at maximum the sun is letting out most heat
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9
Q

Human causes of climate change

A
  1. Carbon dioxide emission, eg burning if fossil fuels
  2. Methane, eg livestock
  3. Nitrous oxides, eg car exhausts
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10
Q

Managing the impacts of climate change

A
  1. Carbon capture
  2. Planting trees
  3. Alternative energy sources
  4. International agreements
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11
Q

Reducing the effects of tropical storms

A
  1. Monitoring
  2. Protection
  3. Planning
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12
Q

Economic developments of rainforests

A

Gains

  • Development of agriculture
  • Tax for government
  • Improved infrastructure
  • Raw materials
  • Hydroelectric power is cheap and renewable.
  • Gold can be sold

Losses

  • Water shortages
  • Fires can burn out of control
  • Rising temperatures can ruining farming
  • Plants become extinct(medical benefits)
  • Tourist number decreases
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13
Q

Opportunity and challenges in (Svalbard) Cold Environments

A

Opportunity

  • Mineral extraction
  • Energy supply
  • Fishing
  • Tourism

Challenges

  • Extreme temperatures
  • Construction
  • Services
  • Accessibility
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14
Q

Rivers

Uses

A
  • Transport
  • Hydroelectricity
  • Tourism
  • Agriculture
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15
Q
  1. Source
  2. Confluence
  3. Meander
  4. Tributary
  5. Drainage basin
  6. River bank
  7. River bed
  8. River channel
  9. Floodplain
  10. Bed load
  11. Watershed
  12. Mouth
A
  1. Where river starts
  2. Where two rivers join
  3. Large corner in river
  4. Where small river joins a big one
  5. Area of land drained by a river
  6. Land on either side of a river
  7. Base of river
  8. Where river flows
  9. Land alongside river
  10. Rocks transported by the river
  11. Edge of drainage basin
  12. Where river meets lake or sea
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16
Q

River erosion

A
  1. Solution- acidic river dissolves rocks like limestone
  2. Hydraulic action- force of flowing water on base of river
  3. Attrition- where particles brush off one another
  4. Abrasion- where stones hit the side and base of the river
17
Q

Factors of river erosion

A
  • Load
  • Velocity of river
  • Gradient
  • Geology
  • pH
18
Q

River landforms

A
  • Interlocking Spurs
  • Waterfalls
  • Flood plains
  • Levees
  • Meanders
  • Check notes
19
Q

Physical factors of flooding

A
  • Precipitation
  • Geology
  • Steep slopes
20
Q

Human factors of flooding

A
  • Urbanisation
  • Deforestation
  • Agriculture
21
Q

Preventing flooding-> hard engineering

A
  • Embankments
  • Dams
  • Channel straightening
  • Flood relief
22
Q

Preventing flooding-> soft engineering

A
  • Preparing
  • Wetlands and flood storage area
  • Floodplain zoning
  • River restoration
23
Q

Storm hydrograph

A

Notes

24
Q

Glacial landscapes

A
  1. Corries
  2. Glacial trough
  3. Truncated Spurs
  4. Hanging valleys
  5. Ribbon lakes
  6. Erratics
  7. Drumlins
  8. Moraine
    * see notes
25
Q

Conflict in glaciated areas

A
  1. Quarrying
  2. Tourism
  3. Water storage