English National Curriculum - Science Science

2. Explore photosynthesis required practical

Mission Objectives

Describe how to investigate the effect of light intensity on the rate of photosynthesis

Explain how the results of this all are affected by the inverse square law

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Rocket Words Quiz

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Keywords

Words and meanings to learn

relationship

the way in which two or more people or things are connected

table

when information such as numbers and descriptions is arranged in rows and columns

intensity

the measurable amount of a property, such as force, brightness, or a magnetic field

inverse square law

when the intensity equals the inverse of the square of the distance from the source

inverse

something that is the opposite or the reverse of something else

This lesson has been written by

Mike Linley

Mike studied zoology and botany at Durham University and followed this with 3 years of postgraduate study at Bristol University with the Science Research Council.

Mike uses his vast experience to add knowledge and engagement to Developing Experts, particularly within the disciplines of biology and zoology. He has over 20 years TV production experience, including writing and producing nature programmes for the Disney channel and, for a period of time, was Sir David Attenborough’s scientific advisor.

Required Resources

Resources: a boiling tube, freshly cut 10 cm piece of pondweed (Cabomba or Elodea), a light source, a ruler, a test tube rack, a stop watch, 0.2% solution of sodium hydrogen carbonate solution and a glass rod

Handout: Contains the process to follow with questions to check understanding

Risk assessment

  • Risk assessment and risk management are the responsibility of the school or college. 
  • 0.2% sodium hydrogen carbonate solution is a low hazard. Refer to Hazcard 95C. 
  • Care should be taken when handling glassware. 
  • Care should be taken with the use of lamps that may get hot. 
  • Care should be taken with the presence of water and the electrical power supply for the lamp.

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Careers related to this lesson

Biologist

Botanist