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The Water Cycle. Processes in the Water Cycle The water cycle is made up of 5 processes The water cycle is made up of 5 processes –Evaporation/transpiration-

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Presentation on theme: "The Water Cycle. Processes in the Water Cycle The water cycle is made up of 5 processes The water cycle is made up of 5 processes –Evaporation/transpiration-"— Presentation transcript:

1 The Water Cycle

2 Processes in the Water Cycle The water cycle is made up of 5 processes The water cycle is made up of 5 processes –Evaporation/transpiration- water vapor entering the atmosphere (from large bodies or water or plants –Condensation- when air cools down, it cant hold all the moisture so it forms liquid drops on surfaces –Precipitation- when water droplets get too large and fall out of clouds back to the Earth –Runoff- water that flows back to the oceans over the land

3 The Water Cycle

4 Where Freshwater is Found Atmosphere (water vapor) Atmosphere (water vapor) Streams/rivers Streams/rivers Ponds/lakes Ponds/lakes Groundwater Groundwater Glaciers and icebergs Glaciers and icebergs

5 Groundwater Makes up 25% of freshwater Makes up 25% of freshwater Found underground Found underground If water fills all the spaces in the rock-saturated zone If water fills all the spaces in the rock-saturated zone Permeable-water can pass easily through spaces in rocks Permeable-water can pass easily through spaces in rocks Impermeable-water cannot pass through the rocks spaces Impermeable-water cannot pass through the rocks spaces Acquifer- a permeable layer of rock that is saturated with water Acquifer- a permeable layer of rock that is saturated with water

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7 Weathering and Erosion Erosion-the process that wears down and carries away rock and soil Erosion-the process that wears down and carries away rock and soil Weathering-process where rocks are chemically altered or physically broken down into fragments Weathering-process where rocks are chemically altered or physically broken down into fragments

8 Erosion Ways that erosion can take place Ways that erosion can take place –Gravity –Movement of streams –Groundwater –Glaciers –Wind –Waves Cliff eroded Glacier erosion feature

9 Groundwater eroding land Gravitys effect Waves eroding base Of cliff Wind erosion

10 Types of Weathering -Mechanical Mechanical weathering- physically breaking down rocks through Mechanical weathering- physically breaking down rocks through –Frost wedging- ice expands and cracks rocks –Abrasion- when rocks scrape or grind against each other –Growth of plant roots- gets in between rocks and cracks them

11 Wind eroding a hole through a structure Water gets into the spaces in a rock, expands while it freezes and cuts through a rock

12 Types of Weathering -Chemical Chemical weathering-chemical reactions dissolve the minerals in a rock or change them into new minerals Chemical weathering-chemical reactions dissolve the minerals in a rock or change them into new minerals Water is the main agent of chemical weathering Water is the main agent of chemical weathering

13 Chemical eroding of ancient buildings


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