december 3-4, 2009 diagnostic for photo/resp. introduce essentials of photosynthesis and respiration...
TRANSCRIPT
December
3-4, 2009
•Diagnostic for Photo/Resp.•Introduce Essentials of Photosynthesis and 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?
Human Bar Chart
Essential Learnings: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 this 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 – CO2 - gas in the air – enters plant through the stomata
- Water (H2O) from the soil
Photosynthesis
Two PRODUCTS (end up with)
• A sugar called GLUCOSE
symbol = C6H12O6
• Oxygen gas (O2) (waste product)
Photosynthesis Equation:
6CO2 + 6H20 C6H12O6 + 6O2
carbon water sugar oxygendioxide
• On a global scale, photosynthesis is the most important process to the welfare of life on Earth.– Each year photosynthesis synthesizes 160 billion
metric tons of sugars per year.
6 waters + 6 carbon dioxides will make 1 sugar
molecule and 6 oxygen molecules
light
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, Carbon Dioxide and Water
Exhaling Carbon Dioxide Labpage 54
• Lab Write-Up– Problem Statement– Hypothesis– Materials – Procedures – refer to page 54– Data
• Data table– Conclusion
• Answer Analyze and Conclude # 1,2,3,4
Lab – Class Collects Data together
Student Time it took to change color
(no exercise)
Time to change after exercise
#1
#2
#3
#4
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
Respiration equation:
C6H12O6 + 6O2 6CO2 + 6H20
(sugar) oxygen carbon water
glucose dioxide
The Cycle
Products of Photosynthesis (plant happy and growing)
Sugars and Oxygen
Respiration – Energy for organism produced
Product of Respiration – (animals healthy and happy)
Water and Carbon Dioxide
Photosynthesis occurs in chloroplasts
Eat sugars and use oxygen to respire or breathe
Waste products are
Chloroplasts capture suns energy
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
Time to Summarize
• All voices will be heard and shared
• Compact all your thoughts related to your prompt into 4 or LESS words and then prepare to share..
• Example: Tarheels take it all!
• Surfing…say no more!
Journal Entry #2
Use your journal notes to answer the following questions
1. What 4 ingredients are needed for photosynthesis to occur?
2. What is the result (products) of photosynthesis?
3. What is cell respiration? What is needed? What is produced?
4. How are photosynthesis and respiration connected (cycle)
Demo to get kids thinking
1. Make observations of the solution in the beaker?
2. What will happen when Ms. Keever drinks the solution?
3. What will happen if Mr. Blank blows through the straw into the solution?
4. Conduct Demo5. Record observations and try to
explain it.
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