Resources Memory game trays X 5 with: sugar, water, leaf, potato, lightbulb, onion, soil (compost) Printout of exam question

jeudi 23 mai 2019 Thursday, 23 May 2019 jueves, 23 de mayo de 2019 Efficiency Level Objective Outcome D/E Describe how energy gets in and travels out of a food chain. Draw a simple food chain and label where the energy goes in and comes out. C/B Explain why energy is lost at each trophic level Explain how efficiency can be increased. On your food chain include some numbers to show and explain exactly where the energy goes. Complete exam questions A/A* Analyse the importance of decomposers in recycling nutrients in an ecosystem. Calculate efficiency Write a short paragraph explaining why decomposers such as fungus and bacteria are so important in a woodland ecosystem. Sheet in question is the science equipment sheet . Starter: Memory tray! How many of the items can you remember in 15 seconds? Keywords: trophic level, consumer primary, carnivore, secondary, herbivore, detritivores Extension: what links all of the memory tray items?

Where does it all start?

PRODUCERS

What is the word equation? Boardworks KS3 Science 2008 Plants and Photosynthesis What is the word equation? Water, light, glucose, chlorophyll, carbon dioxide, oxygen

Primary Consumers ENERGY

Secondary Consumer

ENERGY!

Why would I have more energy than the last example?

Your turn Draw a food chain for a woodland. Explain where the energy enters and leaves the food chain Why do you think little organisms such as worms and woodlice are important in your food chain?

30% 100kJ Efficiency Movement = 55kJ Faeces = 10kJ Urine = 5kJ If Angelina eats 100kJ of energy in the strawberry, how much of that (in%) does she use for respiration? 100kJ Movement = 55kJ Faeces = 10kJ Urine = 5kJ

Calculating efficiency Copy this equation into your books! Efficiency = (%) Energy used Energy eaten X 100 33kJ How much energy is used For respiration? 33 100 X 100 = 33%

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Exam question

Activity 4 square.

Decomposers DETRITIVORES FUNGUS BACTERIA

Plenary II – if this is the answer, what is the question. The Sun Studnets are shown an answer and have to write down what question they think gave that answer. ‘Borrowed’ from Mock the Week’!

Plenary II – if this is the answer, what is the question. Where does the energy come from in photosynthesis?

Plenary II – if this is the answer, what is the question. Sex

Plenary II – if this is the answer, what is the question. How might an animal use some of the energy it gains from its food?

Plenary II – if this is the answer, what is the question. 100

Plenary II – if this is the answer, what is the question. What is the total possible energy efficiency of an animal

Plenary III – Guess the word! Write a keyword on your post-it-note and stick it to your partners head without them reading it. They can ask you questions to guess the word!

Keyword SPLAT! WEB CARNIVORE PRODUCER ENERGY SUN PLANTS TERTIARY TROPHIC HERBIVORE PRIMARY CHAIN SECONDARY

Efficiency Plenary: choose from one of the following 3! jeudi 23 mai 2019 Thursday, 23 May 2019 jueves, 23 de mayo de 2019 Efficiency Level Objective Outcome D/E Describe how energy gets in and travels out of a food chain. Draw a simple food chain and label where the energy goes in and comes out. C/B Explain why energy is lost at each trophic level Calculate efficiency On your food chain include some numbers to show and explain exactly where the energy goes. Complete exam questions A/A* Analyse the importance of decomposers in recycling nutrients in an ecosystem. Write a short paragraph explaining why decomposers such as fungus and bacteria are so important in a woodland ecosystem. Sheet in question is the science equipment sheet . Plenary: choose from one of the following 3! Keywords: trophic level, consumer primary, carnivore, secondary, herbivore, detritivores Next lesson: Carbon and nitrogen cycles!