half term homework due friday 7th

homework monday 3rd june- due monday 10th june

Complete the word fill and worksheet about testing soil pH- due monday 10th june

Word bank    acid    air    alkali    drain    erosion    tiny    humus    larger    lime    minerals    mixture   creatures    peat     pH    roots    worms 

1. Soil is a  of many substances and there is a wide variety of different soils.

2. Soil is held together by plant  which help prevent the process of .

3. Creatures such as  are very important because they help mix up the soil, and so  can then circulate.

4. Dead organic matter is called  and helps keep nutrients in the soil.

5. Loam is a good quality soil because it has the right balance of   .

6. Clay soil is made of  rock particles and has little air in it, so very few  live in it.

7. Sandy soil is made of  rock particles and so water can  away more easily.

8. Plants and crops will only grow well if the soil  is in the right range, normally from 4.5 to 7.5.

9. If the pH of the soil is low, it may be too  and so it must be made more alkaline by adding .

10. If the pH of the soil is high, it is too  and needs to be made more acidic by mixing in .

homework sheet:

revision activities

http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/food_chains/revision/2/

http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/food_chains/revision/2/

http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/food_chains/quiz/q39312979/

http://www.docbrown.info/ks3biology/9CmcHP6.htm

level ladder for investigation homework

3	Considering Evidence ·        State the findings from Christina and Declan’s evidence:The leaf with no carbon dioxide had starch/no starch. The leaf with no water had starch/no starch. The leaf with no light had starch/no starch. The control leaf had starch/no starch. ·        State the conclusion: Plants need ________ to make starch. Evaluating Evidence ·        Suggest an improvement to the investigation. The investigation could have been improved if…
4	Considering Evidence ·        State Christina and Declan’s evidence:The leaf with no carbon dioxide had starch/no starch. The leaf with no water had starch/no starch. The leaf with no light had starch/no starch. The control leaf had starch/no starch. ·        Explain your conclusion using simple scientific ideas. Plants need ________ and ________ to make starch. Evaluating Evidence ·        Suggest improvements with reasons.
5	Considering Evidence ·        Describe Christina and Declan’s evidence:The leaf with no carbon dioxide had starch/no starch. The leaf with no water had starch/no starch. The leaf with no light had starch/no starch. The control leaf had starch/no starch. ·        State the conclusion: Plants need ________ and ________ to make starch. ·        Explain your conclusion using scientific words. Evaluating Evidence ·        Suggest how the investigation could be improved. ·        Suggest practical improvements.

7	Considering Evidence ·        Make a generalisation based on Christina and Declan’s evidence. ·        Explain your conclusion using scientific ideas to explain the evidence in detail. ·        Identify any anomalies in the results. Evaluating Evidence ·        Evaluate the evidence: suggest some strengths and weaknesses with the evidence. ·        Decide if the data is sufficient to support the conclusion. ·        Explain in detail how the method could be improved.
8	Considering Evidence ·        Make a generalisation based on Christina and Declan’s evidence. ·        Explain your conclusion using scientific ideas to explain the evidence in detail. ·        State your conclusion. Make a quantitative generalisation based on the results. ·        Explain any anomalies in the results. ·        Discuss how certain you can be of the conclusions you have made Evaluating Evidence ·        Evaluate the evidence: suggest a range of strengths and weaknesses with the evidence. ·        Explain in detail how the method could be improved based on your evaluation. ·        Discuss if the data is sufficient to support the conclusion.
EP	Considering Evidence As for Level 8 but also: ·        Explain the relationship scientifically, where appropriate, offering alternative views, using scientific ideas and mathematical units appropriately. ·        Discuss how certain you can be of the evidence. Evaluating Evidence ·        Evaluate the evidence: suggest a range of strengths and weaknesses with the evidence. ·        Discuss how certain you are about the evidence. ·        Explain in detail how the method could be improved based on your evaluation. ·        Discuss if the data is sufficient to support the conclusion, explaining what additional could be collected.

wbsites to help with homework

plants & photosynthesis
http://www.bbc.co.uk/schools/gcsebitesize/science/add_gateway_pre_2011/greenworld/photosynthesisrev1.shtml

food chains
http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/food_chains/revision/5/

food webs
http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/food_chains/revision/7/

toxic materials in the food chain
http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/food_chains/revision/9/

Revision poster homework due Monday 13th May

LAT homework due Tuesday 7th May

Christina and Declan investigated the factors that affected photosynthesis in leaves.

You need to write a report about their results.

1.Read their investigation and look at their results.

2.Was it a fair test?

3.Was it reliable?

4.Was it accurate?

5.What do the results tell us?

6.How well do the results support the conclusion and the prediction?