Natural Sciences and Technology Grade 6-A - Thunderbolt Kids

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1 Photosynthesis 4 KEY QUESTIONS • Why can aplant make its own food but an animal cannot? • What is needed for photosynthesis to happen? • How do plants make food and store food? • Why do plants need so much water? • Can plants live in the dark? • Why are plants mostly green? 1.1 Plants and food Green plants are just like factories! They make food for themselves and every animal on Earth using sunlight energy, water and the gas carbon dioxide. They also recycle the air and make oxygen for us to breathe. QUESTIONS 1. What happens in a factory? Why do you think we can say plants are like factories? 2. Why can we say that plants make food for themselves and every animal on earth?
Scientists have found out exactly how plants are able to do all these things. Let's take a closer look at how plants make food for themselves and us. The process of photosynthesis Photosynthesis is the process that plants use to change the energy from sunlight into energy for food. Plants change light energy from the Sun into food energy. Photosynthesis happens in all green parts of aplant. Leaves are usually the greenest parts. So plants do this mostly in their leaves. Do you remember learning about photosynthesis in Gr 5? Plants need certain things to photosynthesise. There are some important requirements for photosynthesis to happen. These are explained on the next page. Chapter 1. Photosynthesis NEW WORDS • photosynthesis • chlorophyll • carbon dioxide • oxygen • glucose • molecule • conditions • anchorage • microbes • fertile DID YOU KNOW? The word photosynthesisactually has two parts:photo = light and synthesis = to make or put together. So it means to use light to make something (in this case, food). 5
Page 1 and 2: Natural Sciences and Technology Gra
Page 3 and 4: AUTHORS LIST This book was written
Page 5 and 6: Welcome to Grade 6 and to Natural S
Page 7 and 8: Hey! My name is Tom. I have two pla
Page 9 and 10: Hello! My name is Sophie. One of my
Page 11: Table of Contents Life and Living a
Page 17 and 18: - stem (sugar cane) - seeds (wheat
Page 19 and 20: 2. Design a poster for your Gr 4fri
Page 21 and 22: Sunflower seeds. Lettuce. Sugar can
Page 23 and 24: QUESTIONS: 1. Was it easy to distin
Page 25 and 26: QUESTIONS: 1. Which test do you thi
Page 27 and 28: QUESTIONS: 1. Make a list of living
Page 29 and 30: REVISION: 1. List the four things t
Page 31 and 32: 7. What do plants store glucose as?
Page 33 and 34: Examples of the foods in the food g
Page 35 and 36: 3. Fats and oils: Meat. Lentils. Al
Page 37 and 38: Name of vitamin Sources Function Vi
Page 39 and 40: Very often food manufacturers add d
Page 41 and 42: The natural foods contained a mixtu
Page 43 and 44: KEY CONCEPTS • Food groups: - foo
Page 45 and 46: Name of vitamin Vitamin A Vitamin C
Page 47 and 48: • The food in the middle of the p
Page 49 and 50: Tuesday Wednesday Thursday Friday t
Page 51 and 52: 4. What important food group is Raj
Page 53 and 54: Breakfast: Option 1: Fruit loops Op
Page 55 and 56: Supper: Option 1: Chicken pieces Op
Page 57 and 58: Causes of apoor diet There are many
Page 59 and 60: • Diabetes: This is adisease that
Page 61 and 62: 3. On your poster, you must include
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4. Write a paragraph where you expl
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ACTIVITY: A REALLY old role play Wo
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2. Can you predict how the locals w
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Benefits of food processing Food pr
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Food Reason for being processed Raw
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ACTIVITY: Class discussion INSTRUCT
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Highly processed foods: • Highly
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preserve it, just like people did 3
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ACTIVITY: Comparing traditional and
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5. Use the space below to draw a fl
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KEY CONCEPTS • Food is processed
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5. A farmer wants to export some gr
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I really enjoyed that, especially l
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• arctic and alpine tundra are in
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A unique South African ecosystem So
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A healthy ecosystem is one in which
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In this man-made forest, there is n
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• insectivores only eat ... can y
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A food web in asavanna. There are a
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• Forest ecosystem: grass, small
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7. When marking out your ecosystem
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2: 3: Animal species: 1: 2: 3: Chap
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interdependent and they are connect
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REVISION: 1. Provide a definition f
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10. What choices do you need to mak
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Did you know that all matter is act
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We would see that the particles in
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3. If you should come into contact,
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In the next table there are 3 pictu
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2. Did they behave dierently? 3. In
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7. What do we call the process when
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We have learnt that materials exist
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A mixture of dierent coloured jelly
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3. Separate the mixture into a pile
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2. Draw a picture of the mixture. 3
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3. Can you separate the mixture int
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INSTRUCTIONS: 1. Place 10 scoops of
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Picture of mixture INSTRUCTIONS (Pa
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REVISION: 1. What is amixture? 2. L
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Now that we know more about mixture
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ACTIVITY: When is amixture also aso
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What is asolution? When two substan
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Wait! How is it possible for one su
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4. What do you think happened to th
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In the previous chapter, we saw how
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4. Which method do you think works
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3. Complete the following sentences
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dissolved limestone can crystallise
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KEY CONCEPTS • A solution is aspe
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4. What was the mixture of sugar an
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It was quite dicult in the beginnin
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changes are called. QUESTIONS: 1. W
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4. What do we call it when we have
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In the first investigation, we will
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3. What did we change in this inves
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RESULTS: The eect of grain size on
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INVESTIGATION: Does stirring increa
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3. What did we change in this inves
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REVISION: 1. What are the 3factors
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We have learnt a lot about solution
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ACTIVITY: Thinking about pollution
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8. How do you think oil ends up in
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Wetlands are not necessarily wet th
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INSTRUCTIONS: 1. Drill ahole in the
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QUESTIONS Do you remember studying
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REVISION: 1. Look at the picture be
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Water is very important for us and
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QUESTIONS 1. What does 'clean water
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ACTIVITY: Cleaning water in astill
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Filtering is agood way of removing
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2. What size and shape will your fi
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MAKE: Now that you have a design, i
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How is water cleaned by municipalit
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STEP 3: AERATION The raw water now
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6. Name the 5steps in the water tre
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Natural Sciences and Technology Grade 6-A - Thunderbolt Kids

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