Lesson 1.1

Water Cycle Evaporation – heat from the sun changes surface water from a liquid to a gas Evaporation – heat from the sun changes surface water from a liquid to a gas Transpiration – release of water vapor into the air from plant’s leaves Transpiration – release of water vapor into the air from plant’s leaves Condensation – water vapor turning back into a liquid due to cooling Condensation – water vapor turning back into a liquid due to cooling

Water Cycle Precipitation – liquid or solid water falling to the ground from clouds Precipitation – liquid or solid water falling to the ground from clouds Infiltration – water seeping into the ground to become groundwater Infiltration – water seeping into the ground to become groundwater

Ground Water vs Surface Water Ground water – water stored beneath the earth’s surface Surface water – Water on the earth’s surface

Stream Characteristics Source – where a river/stream begins (headwaters) Source – where a river/stream begins (headwaters) Mouth – where a river flows into another body of water Mouth – where a river flows into another body of water Velocity – distance water travels over a period of time (speed) Velocity – distance water travels over a period of time (speed) –Velocity determines how much sediment a stream can carry

Sediment Load Suspended Load – Sediments carried suspended within the current (silt, clay) Suspended Load – Sediments carried suspended within the current (silt, clay) Dissolved Load – Sediments carried in solution (minerals) Dissolved Load – Sediments carried in solution (minerals) Bed Load – Sediments carried along the bottom of a stream Bed Load – Sediments carried along the bottom of a stream –Skipping – Sand, Gravel –Rolling and Sliding – Pebbles, boulders

River Deposits Meandering streams – streams change position over time Meandering streams – streams change position over time