Year 6 Geography unit 3: Water Mind Map

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Year 6 Geography unit 3: Water Mind Map by Mind Map: Year 6 Geography unit 3: Water Mind Map

1. Contour Lines

1.1. Close together it means a steep slope.

1.2. Far apart means a gentle slope.

1.3. Shows the relief

2. How to stop flooding

2.1. Soft strategies

2.1.1. Restricting the reclamation of land from lakes

2.1.2. Reducing soil erosion and silting in river channels by planting trees and controlling deforestation, building terraces

2.1.3. Increasing storage capacity of lakes

2.1.4. Giving up farmlands and fish ponds reclaimed lakes

2.1.5. Stopping grazing on steep slopes

2.2. Hard strategies

2.2.1. Building dams and resevoirs

2.2.2. Straightening river channels

3. How to reduce chance of drought

3.1. Collect rain water

4. Water Pollution

4.1. Causes:

4.1.1. Cause 1: Increasing number of cities & economic development

4.1.1.1. Cause 2: Increase in water usage

4.1.1.1.1. Cause 3: Sewage

4.2. Prevention:

4.2.1. 1: Reduce discharge

4.2.1.1. 2: Clean polluted rivers/lakes

4.2.1.1.1. 3: Compost waste

4.3. Impact:

4.3.1. Threat to public health

4.3.1.1. Water shortages

4.3.1.1.1. Affects water ecosystem

5. Flooding

5.1. Physical Factors:

5.1.1. 1: Heavy rainfall/typhoons

5.1.1.1. 2: Relief (Shallow river bed)

5.2. Human Factors:

5.2.1. 1: Deforestation

5.2.1.1. 2: Poor farming practices (overgrazing/over-cultivation)

5.2.1.1.1. 3: Urban development

5.3. Impact:

5.3.1. Damaged houses

5.3.1.1. Economic losses

5.3.1.1.1. Loss of life

6. Concave -> Steep - Gentle, Gradient: Decreases Convex -> Gentle - Steep, Gradient: Increases