Causes of Wildfires

hannahmariewheel
Mind Map by , created almost 6 years ago

Human and Natural causes of wildfires

116
0
0
Tags
hannahmariewheel
Created by hannahmariewheel almost 6 years ago
Volcanoes
1jdjdjd1
Economic migrates in the EU (Poland to UK migration)
a a
Geography Coasts Questions
becky_e
History - Germany 1918 - 1945
Grace Evans
The sign of four themes
Annabel Hovenden
Using GoConqr to study geography
Sarah Egan
GCSE Geography - Causes of Climate Change
Beth Coiley
Characteristics and Climate of a hot desert
Adam Collinge
Geography Coastal Zones Flashcards
Zakiya Tabassum
Favela Bairro Project- Squatter Settlement case study Changing urban environments
a a
Causes of Wildfires
1 Human
1.1 War
1.2 Combustible objects (eg Fireworks, cigarettes, chinese lanterns, candles)
1.3 Bonfires, BBQs, Campfires
1.4 Public utilities (eg Gas leak)
1.5 Arson
1.6 Making sparks (friction)
1.7 Agricultural Escape
1.8 Prescribed burn escapes
1.9 Items that focus sun rays (eg broken glass)
2 Natural
2.1 Lightning
2.1.1 Strikes DRY ground; lots of heat energy; burns fuel
2.2 Temperature
2.2.1 Really hot days can help start fires
2.3 Volcanoes
2.3.1 Lava from eruptions can cause fires
3 Conditions needed to start/spread wildfires
3.1 Dry Fuel (Easier to burn)
3.2 Weather
3.2.1 Temperature
3.2.1.1 Temperature of fuel reaches ignition point
3.2.2 Wind
3.2.2.1 Pushes flame to new fuel source. Sparks and embers are carried from fire to start a new one.
3.2.2.2 Dries out fuel
3.2.3 Humidity
3.2.3.1 Measure of moisture in the air; moisture dampens fuel and slows spread
3.2.3.2 Humidity is greater at night, less intense flames; travel slower
3.3 Topography
3.3.1 The shape of the land affects the spread of fire (elevation, direction, steepness and exposure to sunlight are also factors.)

Media attachments