Zusammenfassung der Ressource
Hydrosere
- Properties of Water
- Changes of State
- Solid, Liquid & Gas
- Evaporation / Condensation
/ Melting / Solidification
- Anomalous Expansion
- Unusual Expansion
- Applied to water, which expands
as it's cooled below 4C
- Heat Capacity
- Water heats up and cools slowly
- Maintains stability by
moderation temperature
- Solvent Properties
- Dissolved Substances
- Hydrological Cycle
- Sources of Energy
- Solar: Providing energy for evaporation
- Gravitational: Downward movement of precipitation
- Residence Time
- Average length of time water
stays in a resevoir
- Volume in Resevoir / Rate of Transfer
from/to a resevoir
- Processes & (Human Impacts)
- Inputs
- Precipitation (Global Climate Change)
- Throughflow
- Interception (Deforestation)
- Infiltration (Soil Compaction)
- Percolation (Soil Compaction)
- Ground Water Flow (Actions
reducing Infiltration)
- Outputs
- Evaporation (Increased Temperature)
- Transpiration (Vegetation Changes)
- Water as a Resource
- Uses
- Abstractive
- Remove Water
- Domestic - Washing, Industrial -
Cooling, Agricultural - Irrigation
- Non-Abstractive
- Recreation, Energy (HEP), Transport
- Water Quality Requirements
- Turbidity (Removal of suspended solids)
- pH (Water too acidic,
dissolves copper pipes)
- Calcium ('Harder' Water > Reduces
Tooth Decay > Increases Scum
- Pesticides (Can be toxic)
- Dissolved Oxygen (Low levels
make water smell)
- Chlorine (Added to sterilise)
- Metals (Damage Nervous System)
- Ecoli Abundance (Pathogens cause Disease)