MONTUESWEDSTHURSFRISATSUN Bring textbook 26 Bring textbook 27 QUIZ Reading DUE 12 QUIZ 3 No School Unit Test AzMerit - Writing 15 AzMerit - Reading 16 AzMerit - Math 17 AzMerit - Math AM & PM Reviews 21 AM & PM Reviews 22 AIMS - Science

Announcements THUR: Textbooks Biogeochemical Cycle packets due FRI: QUIZ #1 (Population Pyramids, biogeochemical cycles, speed problems) SIN Article #1 Due TUES 3/31: Reading Annotations Due – Chapter 9 section 2 & 3

Precipitation over land Precipitation over ocean transpiration Seepage from ground Runoff from Surface Evaporation from ocean Condensation 7 pts

A. Atmosphere B. Photosynthesis C. Forest D. Respiration in Plants E. Plant Consumption F. Animal Consumption G. Respiration in Animals H. Decay I. Detritus Feeders J. Respiration in Detritus K. Conversion to Fossil Fuel L. Fossil Fuel Processing M. Combustion N. Products of Combustion O. Forest Fire P. Exchange with Ocean 11 pts

A. Atmosphere B. Nitrogen Fixation C. Legume Plant D. Nitrogen-fixing Bacteria E. Ammonification F. Nitrification G. Nitrosomes H. Nitrobacter I. Consumption by plants J. Consumption by animals K. Denitrification 6 pts

A. Erosion from Rock B. Absorption by plants C. Concentration in Plant Tissues D. Plant Consumption E. Grazing F. Plant Waste G. Animal Waste H. Runoff to Ocean I. Marine Sediment J. Geologic Upthrust 5 pts Total = 29 pts

Effects of Human Activities on Water Cycle We alter the water cycle by: Withdrawing large amounts of freshwater. Clearing vegetation and eroding soils. Polluting surface and underground water. Contributing to climate change.

Effects of Human Activities on Carbon Cycle  We alter the carbon cycle by adding excess CO 2 to the atmosphere through: Burning fossil fuels Cars Factories Burning wood/vegetation Clearing vegetation faster than it is replaced. Respiration Figure 3-28

Effects of Human Activities on the Nitrogen Cycle We alter the nitrogen cycle by: Adding gases that contribute to acid rain. Adding nitrous oxide to the atmosphere through farming practices which can warm the atmosphere and deplete ozone. Contaminating ground water from nitrate ions in inorganic fertilizers. Releasing nitrogen into the troposphere through deforestation.

Effects of Human Activities on the Phosphorous Cycle We remove large amounts of phosphate from the earth to make fertilizer. We reduce phosphorous in tropical soils by clearing forests. We add excess phosphates to aquatic systems from runoff of animal wastes and fertilizers. Eutrophication: natural process; over 1000’s of years, lakes fill in with sediment, become marshes then dry land Cultural Eutrophication: same process, but speeded enormously by loading with “limiting nutrients” (typically P, sometimes N) Problems associated with cultural eutrophication Algal blooms Water anoxia

Learning Scale 4 – I can diagram out the key components of each biogeochemical cycle and explain the human impact for each cycle 3 – I can explain most of each biogeochemical cycle and some of the human influences 2 – I can explain some of the biogeochemical cycles and some human influences 1 – I need to review

Physics – Motion Chapter 9 Lots of things are in motion winter-games winter-games

Physics - Motion EQ: How do scientists calculate speed and motion? How do you graph that?

I. Describing and Measuring Motion When do you know something has moved? Car wash A.Reference Point – place or object used for comparison to determine if something is in motion Motion – an object is in motion if it changes position relative to a reference point

II. Speed & Velocity ? How do scientists find the speed of an object? Why would you want to know the speed of something? Speed limit Driving time Sports (running, lacrosse & hiking)

II. Speed & Velocity A.Calculating Speed 1.If you know the distance an object travels in a certain amount of time, you can calculate the speed of the object 2.Speed is a type of rate (unit of time) 3.****** Speed = distance time 4. Practice Problems

II. Speed & Velocity 4. Practice Problems 1. A student travels 5 km in 24 min, what is their speed? Speed = d/t= (1 km =.621 mile) ?

II. Speed & Velocity 4. Practice Problems 2. A bike moves 35 m in 5 seconds. What is its speed? Speed = d/t=

II. Speed & Velocity 4. Practice Problems 3. The speed of the car is 15 km/h and it’s been traveling for 3 hours. How many km has it traveled? Speed = d/t=

Speed Lab Purpose: Calculate an object’s speed and compare relationships on a graph Remember SPEED = _________

III. Velocity How are velocity and speed related? Describes: Speed Direction Ex: Weather Storm is traveling 25km/hr eastward Sports Basketball clips