Farming+problems

9C On the farm

Farming problems
Describe the bad effects of some farming methods. Describe how biological control works. Recall the effects of too much carbon dioxide in the atmosphere. Use the carbon cycle to explain the effects of changes in the environment.
 * Outcomes (what you will be able to do by the end of this lesson) **


 * Starter **
 * Review homework and completed work from last lesson
 * Key term quiz - there are lots of key terms in this unit
 * Watch and help your teacher setup the floating leaf disc experiment. Now observe the experiment and suggest a reason why the leaf discs float. How does this relate to what you have learned previously about photosynthesis?

> > > media type="custom" key="22363954" > > > > >
 * Activities **
 * 1) Complete the card sort ([[file:ES9_Cd040_05msu.doc|doc]] and [[file:ES9_CHAP_Cd2.pdf|pdf]] versions) to outline example problems caused by modern farming methods and potential solutions.
 * 1) What other problems do you know of caused by farming? Can you expand on any of the problems outlined? Discuss
 * 1) What is Biological control? Watch the video below and then complete the [[file:ES9_CHAP_Cd5.pdf|summary worksheet on biological control]]
 * 1) Extension: research different examples of Biological control. Can you find any examples that did not work or went badly wrong? Why?
 * 1) What do you remember about food webs? How can farming affect food webs and the ecosystems it is in? Complete [[file:ES9_Cd040_11msu.doc|damaging food webs]] individually then review as a class.
 * 1) Now as a class discuss and complete Q1 from P40 of Exploring Science 9 together.
 * 1) Use your knowledge to explain why [[file:ES9_CHAP_Cd4.pdf|farming chemicals]] can be harmful to wildlife (and potentially us!).
 * 1) Produce a poster to show the carbon cycle. Include answers to Q4,5 from p41 of Exploring Science 9 on your poster.


 * Summary **
 * Review completed classwork / key term quiz

Download complete the gapfill on, print-off and stick into your exercise book. You can copy and complete if you have a problem printing.
 * Homework activity options **


 * Help and review**

Video on farming and the environment media type="file" key="ES9_Cd041_10vco.flv" width="640" height="480"
 * Useful extras**