Natural Sciences and Technology Grade 6-A - Thunderbolt Kids
Natural Sciences and Technology Grade 6-A - Thunderbolt Kids Natural Sciences and Technology Grade 6-A - Thunderbolt Kids
VISIT Food webs (video). goo.gl/qbccF QUESTIONS Turn to afriend and design your own food chain consisting of 4 organisms. Rememberafood chain always starts with plants (producers). In awhole ecosystem, the feeding relationships between plants and animals are much more complex than asimple food chain. For example, in the above food chain, the chameleon might also eat flies or butterflies, the snake does not only eat chameleons, but also lizards and mice, and the mongoose also eats small birds and eggs. So what is afood web? When we join many dierent food chains in an ecosystem together, we get a food web. A food web consists of many thousands and thousands of food chains that are connected to each other. On the next page is afood web in asavanna ecosystem. 88 Life and Living
A food web in asavanna. There are also dierent levels of consumers in an ecosystem: • Primary consumers are the herbivores which eat the plants, such as the mice and grass in this savanna food web. • Secondary consumers eat primary consumers. • Tertiary consumers eat the secondary or primary consumers. QUESTIONS 1. Study the food web and identify the producers and the consumers. Distinguish between the primary, secondary and tertiary consumers. You can write your answers (in pencil in case you make a mistake) on the food web illustration. 2. Below is another food web consisting of plants, fish and birds. What kind of ecosystem do you think this foodweb describes? Chapter 5. Ecosystems and food webs 89
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- Page 57 and 58: Causes of apoor diet There are many
- Page 59 and 60: • Diabetes: This is adisease that
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- Page 65 and 66: ACTIVITY: A REALLY old role play Wo
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- Page 69 and 70: Benefits of food processing Food pr
- Page 71 and 72: Food Reason for being processed Raw
- Page 73 and 74: ACTIVITY: Class discussion INSTRUCT
- Page 75 and 76: Highly processed foods: • Highly
- Page 77 and 78: preserve it, just like people did 3
- Page 79 and 80: ACTIVITY: Comparing traditional and
- Page 81 and 82: 5. Use the space below to draw a fl
- Page 83 and 84: KEY CONCEPTS • Food is processed
- Page 85 and 86: 5. A farmer wants to export some gr
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- Page 89 and 90: • arctic and alpine tundra are in
- Page 91 and 92: A unique South African ecosystem So
- Page 93 and 94: A healthy ecosystem is one in which
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- Page 101 and 102: • Forest ecosystem: grass, small
- Page 103 and 104: 7. When marking out your ecosystem
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- Page 107 and 108: interdependent and they are connect
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- Page 119 and 120: 3. If you should come into contact,
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- Page 123 and 124: 2. Did they behave dierently? 3. In
- Page 125 and 126: 7. What do we call the process when
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- Page 129 and 130: A mixture of dierent coloured jelly
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- Page 133 and 134: 2. Draw a picture of the mixture. 3
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- Page 137 and 138: INSTRUCTIONS: 1. Place 10 scoops of
- Page 139 and 140: Picture of mixture INSTRUCTIONS (Pa
- Page 141 and 142: REVISION: 1. What is amixture? 2. L
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VISIT<br />
Food webs (video).<br />
goo.gl/qbccF<br />
QUESTIONS<br />
Turn to afriend <strong>and</strong> design your own food chain consisting of<br />
4 organisms. Rememberafood chain always starts with plants<br />
(producers).<br />
In awhole ecosystem, the feeding relationships between plants<br />
<strong>and</strong> animals are much more complex than asimple food chain.<br />
For example, in the above food chain, the chameleon might also<br />
eat flies or butterflies, the snake does not only eat chameleons, but<br />
also lizards <strong>and</strong> mice, <strong>and</strong> the mongoose also eats small birds<br />
<strong>and</strong> eggs.<br />
So what is afood web?<br />
When we join many dierent food chains in an ecosystem<br />
together, we get a food web.<br />
A food web consists of many thous<strong>and</strong>s <strong>and</strong> thous<strong>and</strong>s of food<br />
chains that are connected to each other.<br />
On the next page is afood web in asavanna ecosystem.<br />
88 Life <strong>and</strong> Living
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