1. Tuesday 3/22/2016 Agenda: Welcome Back!! Biogeochemical Cycles—Water Cycle  Review: Policies and Seating Chart  Notes: Water Cycle  Activity: Bill Nye with Worksheet Homework/Classwork Quarter 4 Notebook due Monday 3/28/2016 for 50 Points

2. Necessary Materials for the Science Folders All I.S. students will be REQUIRED maintain & Folders (1 per quarter) ONLY for Biology!! They will be graded periodically Students may use them as a resource while studying for the exams Materials Needed: 1 folder per quarter (4 total for the year) with prongs in the center Loose leaf paper Pens/Pencils DUE MONDAY 3/28/2016

3. Bio geo chemical Cycles  Energy does NOT get recycled through an ecosystem, but chemicals (nutrients) do!  Water and minerals, such as carbon (C), nitrogen (N), calcium (Ca), and phosphorus (P), are recycled and reused by plants, animals and humans.  Nutrients are recycled through living and dead animals (and humans), the atmosphere, the oceans, and rocks. ANSWER: Biogeochemical Cycles “Bio” – Life “Geo” – Earth “Chemical” – Chemical Cycle – a periodically repeated sequence of events QUESTION: How does our planet, as a whole, work to recycle its resources and provide life?

4. The 4 Main Bio geo chemical Cycles Carbon Cycle - Photosynthesis and cellular respiration. Water Cycle - Evaporation, Transpiration, Condensation, Precipitation and Collection Nitrogen Cycle - death and waste; nitrogen-fixing bacteria; reintroduced to soil for plants; plants feed animals

5. Atmospheric Processes –The Water (Hydrological) Cycle Evaporation – ◦ The sun heats up water in rivers, lakes or the ocean ◦ Turns it into vapor or steam ◦ Water vapor or steam leaves rivers, lakes, or oceans & goes into the atmosphere Transpiration – ◦ Plants lose water out of their leaves ◦ Transpiration puts water vapor back up into the atmosphere.  So…you might ask…do plants sweat? Well, sort of.... people perspire (sweat) and plants transpire.  Condensation – ◦ Water vapor in the atmosphere gets cold & changes back into liquid, forming clouds, in the atmosphere

6. Atmospheric Processes –The Water (Hydrological) Cycle Precipitation – ◦ Water has condensed to the point that the air in the atmosphere cannot hold it anymore. ◦ Clouds get heavy & water falls back to the earth in the form of rain, hail, sleet or snow Collection/Infiltration/Runoff – ◦ Water falls back to earth from the atmosphere as precipitation ◦ May fall into oceans, lakes or rivers or on land  “Collection” ◦ On land, it will either soak into the earth or become part of the groundwater that plants & animals use to drink  “Infiltration” ◦ May run over the soil & collect in oceans, lakes or rivers where the cycle starts all over again  “Runoff”

7. Atmospheric Processes –The Water (Hydrological) Cycle