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Year 2 week 16 2013
 

Year 2 week 16 2013

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study skills, nutrients and relative humidity

study skills, nutrients and relative humidity

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    Year 2 week 16 2013 Year 2 week 16 2013 Presentation Transcript

    • RHS Level 2CertificateWeek 16 – Review Week: Soilnutrients, limiting factors and relativehumidity. Study Skills – activelearning and mind mapping.
    • Learning objectives Identify three active approaches to study State three basic principles of mind mapping. Draw a simple mind map for a macro nutrient Explain the effects on plant growth of nitrogen, phosphorous, potassium, calcium and iron in normal quantities in the soil and in deficiency. Explain the effect of air temperature on relative humidity and how RH can be increased or decreased Explain the law of limiting factors and apply this to photosynthesis and respiration to explain increases and decreases in these processes.
    • Being an active learner Active learners are engaged with their own learning – deliberately seeking new strategies, formulating their own questions, sharing ideas and understanding. A more interesting and engaging way to learn – and more effective. Learning is not something that is done to you – it is something that you do yourself. The more you work with information and apply it, the better your recall and understanding will be.
    • Mind Mapping basics A visual record of the connections between ideas and concepts, as well as the concepts themselves. Presents information in the way that the mind perceives it, as a hierarchy with interconnections – not a linear, left to right approach. Uses colour, humour, images to make memories and connections more powerful The real benefit is making the mind map – actively seeking to make connections between ideas and information. Lots of computer programs exist for this – but all you need is paper and colour pens and your information and creativity.
    • Stages to mind mapping Chose a topic – this goes in the centre of a landscape page. Keep it simple. Add colour/pictures. Select/identify the basic organising ideas Link these to the topic with thick, coloured curvy lines. One colour per BOI. Add images. Thinner lines branch off the basic ideas lines for the component/supporting information and ideas. Keep words to a minimum – they trigger memory. Use arrows and lines to show interconnections. Bubbles, colour, highlights and pictures. Make it fun!
    • Main Plant macro-nutrients Nitrogen – essential for production of chlorophyll and all metabolic processes. Deficiency causes chlorosis, older leaves first. Phosphorous – root development, germination, photosynthesis. Deficiency – small, purple or blue tinged leaves. Potassium – fruiting and flowering, cold and drought hardiness. Deficiency – brown, curled leaf edges, poor fruiting.
    • Other nutrients Calcium – essential for cell wall formation; usually plant deficiency is pH or drought related not an absence in the soil. Low pH (acidity) makes Ca unavailable. Deficiency – bitter pit in Apples, blossom end rot in Tomatoes. Iron – essential for chlorophyll; immobile in the plant; usually deficiency is pH related not due to lack in the soil. Alkaline soils may show iron deficiency. Deficiency – interveinal chlorosis, young leaves first.
    • Relative Humidity The warmer air is the more water vapour it can hold before it becomes saturated and the water begins to precipitate out. Cooler air can hold less water vapour and becomes saturated with a smaller amount of water vapour. Relative humidity measures the temperature of the air and what proportion of the total amount of water vapour that the air at that temperature can hold is actually present.
    • Limiting Factors Where a chemical reaction is dependent on a number of factors, the factor in least supply will limit the speed/efficiency of the reaction. Photosynthesis is the process in chlorophyll of storing energy from the sun in carbohydrates. Cellular respiration is the process (in the mitochondria of cells) of releasing that stored energy Both are complex chemical reactions. Their speed and efficiency can be limited by a number of factors.
    • Learning outcomes Identify three active approaches to study State three basic principles of mind mapping Draw a simple mind map for a macro nutrient Explain the effects on plant growth of nitrogen, phosphorous, potassium, calcium and iron in normal quantities in the soil and in deficiency. Explain the effect of air temperature on relative humidity and how RH can be increased or decreased Explain the law of limiting factors and apply this to photosynthesis and respiration to explain increases and decreases in these processes.