December 7-8, 2009 Essentials of Photosynthesis and Respiration Science Fair Update Make the Connection between Photo & Respiration Active Lab involving Respiration Work to be done at Home

Warm Up – What do we know? Diagnostic – 5 Stars What is photosynthesis? What is respiration? What do you need for these processes to occur? –Ingredients? End products? Chemicals? Formula’s? How are they related?

Essential Concepts: Photosynthesis and Respiration 1.Understand how cells get their energy 2.Explain in your own words what photosynthesis means 3.Write the “ingredients” and “final products” of photosynthesis in words and chemical formulas 4.Describe the RESPIRATION process 5.Illustrate the cycle in which ENERGY flows between plants and animals in nature 6.Understand that mass IS conserved in nature

Photosynthesis Four Ingredients needed - Chloroplasts - part of a plant cell that capture sun’s energy - Sun – Energy reaches the Earth - Carbon Dioxide – CO 2 - gas in the air – enters plant through the stomata - Water (H 2 O) from the soil

Photosynthesis Two PRODUCTS (end up with) A sugar called GLUCOSE symbol = C 6 H 12 O 6 Oxygen gas (O 2 ) (waste product)

EQUATION that Describes PHOTOSYNTHESIS 6 H 2 O + 6 CO 2 + Sun Energy + Chloroplasts C 6 H 12 O O 2 6 waters + 6 carbon dioxides will make 1 sugar molecule and 6 oxygen molecules

Introduction to Respiration Process in which animals CONVERT stored energy in sugars to put to use for living (movement etc) Need 2 things  Oxygen and Sugar Results in  Energy and Carbon Dioxide and Water

Respiration 6 O 2 + C 6 H 12 O 6 Energy for use + 6 CO H 2 O

Journal Entry What ingredients do you need to have photosynthesis occur? What are the results (Products) if photosynthesis can occur Write word and chemical formula answers

Photosynthesis and Respiration Assignments Due Monday Photosynthesis Questions #1 and #2 + Job Qualification (page 48) Respiration Questions Page 53 # 1 (a,b,c,d) and #2 (a,b,c) Due Next Wednesday Drawing that shows relationship between Photosynthesis and respiration (see next slide for details)

Illustrate the Process Develop a Poster that represents the Photosynthesis and Respiration Cycle Criteria: –Show the connection between the Sun, plants and animals. –Include names and Chemical formulas for each “ingredient” or “product” –Properly “Name” each step of the process –Include how many of each “part” are required to make the process work

Is it a good Learning Tool?____ /10 Show the connection between the Sun, plants and animals _____ /5 Include names and Chemical formulas for each “ingredient” or “product” _____ /5 Properly “Name” each step of the process _____ /3 Include how many of each “part” are required to make the process work _____ /7 Overall Pride in your work_____ /5

Photosynthesis and Respiration Assessment Use as much detail as possible to clearly answer the following prompt: 1.Support the statement that “Photosynthesis and Respiration are involved in a cycle that must exist for life to survive on Earth”

The Cycle Product of Photosynthesis (plant happy and growing) Sugars and Oxygen Respiration – Energy released for use Product of Respiration – animals healthy and happy Water and Carbon Dioxide Energy from Sun – Helps plant Photosynthesis occurs Use Sugars and Oxygen to Respire Waste Products are Chloroplasts capture suns energy Need to add chemical formulas and quantities to this template Water and CO 2 used for Photosynthesis

Demo to get kids thinking 1.Make observations of the solution in the beaker? 2.What will happen when Mr. Blank drinks the solution? 3.What will happen if Mr. Blank blows through the straw into the solution? 4.Conduct Demo 5.Record observations and try to explain it.

Explain BTB Indicator that changes color based on pH Carbon Dioxide is an acid Adding Carbon Dioxide changed the pH of the solution Blue if pH>6.8 Clear/Yellow if pH < 6.8

BTB is a tool for our lab Turn to page 54 Read problem statement as a class Make a hypothesis (write in journal) Discuss as a class on how we could do this experiment What is a controlled experiment? Volunteers (up to 4 students) Need timers (involve as many as possible) Need Recorder of data Activity – Suggestions? Safe? Conduct Experiment Every student write down observations and data table Write up your class lab results based on the following slide (Handout to each student) Work hard and we’ll finish this in class on Thursday – Ms. Ryan will judge due date

Exhaling Carbon Dioxide Lab page 54 Lab Write-Up –Problem Statement –Hypothesis (Statement answering Part 2 #5 question) –Materials and Procedures (in your own words) –Data Drawing showing colors of beakers Any time measurements explained –Results Answer Analyze and Conclude # 1,2,3,4 –Conclusion Answer Analyze and Conclude Problem # 5 and develop an experiment to answer “More to Explore” - -You will not be conducting the test

Lab – Class Collects Data together StudentTime it took to change color (no exercise) Time to change after exercise # seconds11.36 seconds # seconds7.24 seconds #314.6 seconds10.92 sec #423 seconds17 seconds

Lab – Class Collects Data together StudentTime it took to change color (no exercise) Time to change after exercise #A Sophie yrs old Trumpet #B Jaelynn 12.5 Flute #C Max B Sings #D Mitchell 13.2 Trumpet

Exhaling Carbon Dioxide Lab page 54 Lab Write-Up –Problem Statement –Hypothesis (Statement answering Part 2 #5 question) –Materials and Procedures (in your own words) –Data Drawing showing colors of beakers Data table –Results Answer Analyze and Conclude # 1,2,3,4 –Conclusion Answer Analyze and Conclude Problem # 5 and develop an experiment to answer “More to Explore” - -You will not be conducting the test

Homework Photosynthesis –Question 1 –Question 2 –Job Qualification Respiration Questions