1 / 12

Photosynthesis

Photosynthesis. Label the diagram: Carbon Dioxide Glucose Oxygen Water. Chloroplast. Rate of Photosynthesis. IB Environmental Systems and Societies Topic 2 Internal Assessment. Learning outcomes. All of you should be able to: Identify the abiotic factors that affect photosynthesis.

doris
Télécharger la présentation

Photosynthesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Photosynthesis • Label the diagram: • Carbon Dioxide • Glucose • Oxygen • Water Chloroplast

  2. Rate of Photosynthesis IB Environmental Systems and Societies Topic 2 Internal Assessment

  3. Learning outcomes All of you should be able to: • Identify the abiotic factors that affect photosynthesis. • Carry out the pre-lab to calculate the rate of photosynthesis. Most of you should be able to: • Describe photosynthesis in terms of inputs, outputs, processes and energy transformations. Some of you might be able to: • Explain how changing these abiotic factors will affect the rate of photosynthesis.

  4. Photosynthesis • Summarise photosynthesis in terms of the following: • Inputs • Outputs • Processes • Transformations

  5. Inputs

  6. Outputs

  7. Processes • Chlorophyll traps sunlight of different wavelengths • The energy is used to split water molecules • Hydrogen from water is combined with carbon dioxide to produce glucose

  8. Transformations Light EnergyChemical Energy Can you write the word equation for photosynthesis?

  9. Photosynthesis Inputs of Water, Carbon Dioxide and Sunlight Light energy is trapped by the chlorophyll inside the chloroplasts Oxygen is released to the atmosphere Energy is released by splitting water into hydrogen and oxygen The hydrogen combines with carbon dioxide to make glucose.

  10. Now your turn!! • Lesson 1: Pre-lab Carrying out a standardised practical using handouts I will give you. Thinking about how you could adapt the experiment for an Internal Assessment . • Lesson 2: Using your Planning Lab Training Sheet you will work in teams to design a practical investigating the rate of photosynthesis. • Lesson 3 + 4: You will carry out the practical and collect data as a team. • Lesson 5: I will show you how to start processing the data to analyse the rate of photosynthesis. Drawing the graphs needed to process the data. • Lesson 6 We will use Excel to process the data further and create our final graphs. • Lesson : 7 We will go through writing a discussion, evaluation and conclusion for this Internal Assessment. • Lesson : 8 and 9 You will have a double period to finish of the write-up of your internal assessment and ask any final questions you might have.You will finish the rest for homework and bring it to the lesson in one week where you shall self-assess them.

  11. Pre-lab Cut 10 leaf discs and remove the plunger from the syringe. Place the leaf discs into the syringe. Holding a finger over the syringe-opening, draw back on the plunger to create a vacuum. Let off vacuum. Pour the discs and solution into the beaker. You will probably have to repeat this procedure 2-3 times in order to get the disks to sink.

  12. Pre-Lab

More Related