Natural Sciences and Technology Grade 6-A - Thunderbolt Kids

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KEY CONCEPTS • The time it takes for asubstance to dissolve is called the dissolving rate or the rate of dissolution. • The rate at which asubstance dissolves can be aected by 3 factors, namely: – the temperature of the solution; – whether or not the solution is stirred (or shaken); and – the grain size of the solute. • A solute will generally dissolve faster if the solvent in which it dissolves is warm. • A solute will dissolve faster when the solution is stirred or shaken. • A solute will dissolve faster if the size of its grains is small. 170 Matter and Materials
REVISION: 1. What are the 3factors that aect solubility? Write a sentence describing how they aect solubility. 2. Write 3 examples where we use the factors that aect dissolving in our daily lives. 3. Complete the following crossword puzzle: Use the words in the box ,and the clues that are given underneath. Chapter 4. Dissolving 171
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Natural Sciences and Technology Gra
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AUTHORS LIST This book was written
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Welcome to Grade 6 and to Natural S
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Hey! My name is Tom. I have two pla
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Hello! My name is Sophie. One of my
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Table of Contents Life and Living a
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Scientists have found out exactly h
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- stem (sugar cane) - seeds (wheat
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2. Design a poster for your Gr 4fri
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Sunflower seeds. Lettuce. Sugar can
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QUESTIONS: 1. Was it easy to distin
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QUESTIONS: 1. Which test do you thi
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QUESTIONS: 1. Make a list of living
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REVISION: 1. List the four things t
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7. What do plants store glucose as?
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Examples of the foods in the food g
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3. Fats and oils: Meat. Lentils. Al
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Name of vitamin Sources Function Vi
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Very often food manufacturers add d
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The natural foods contained a mixtu
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KEY CONCEPTS • Food groups: - foo
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Name of vitamin Vitamin A Vitamin C
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• The food in the middle of the p
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Tuesday Wednesday Thursday Friday t
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4. What important food group is Raj
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Breakfast: Option 1: Fruit loops Op
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Supper: Option 1: Chicken pieces Op
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Causes of apoor diet There are many
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• Diabetes: This is adisease that
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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
Page 129 and 130: A mixture of dierent coloured jelly
Page 131 and 132: 3. Separate the mixture into a pile
Page 133 and 134: 2. Draw a picture of the mixture. 3
Page 135 and 136: 3. Can you separate the mixture int
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
Page 143 and 144: Now that we know more about mixture
Page 145 and 146: ACTIVITY: When is amixture also aso
Page 147 and 148: What is asolution? When two substan
Page 149 and 150: Wait! How is it possible for one su
Page 151 and 152: 4. What do you think happened to th
Page 153 and 154: In the previous chapter, we saw how
Page 155 and 156: 4. Which method do you think works
Page 157 and 158: 3. Complete the following sentences
Page 159 and 160: dissolved limestone can crystallise
Page 161 and 162: KEY CONCEPTS • A solution is aspe
Page 163 and 164: 4. What was the mixture of sugar an
Page 165 and 166: It was quite dicult in the beginnin
Page 167 and 168: changes are called. QUESTIONS: 1. W
Page 169 and 170: 4. What do we call it when we have
Page 171 and 172: In the first investigation, we will
Page 173 and 174: 3. What did we change in this inves
Page 175 and 176: RESULTS: The eect of grain size on
Page 177 and 178: INVESTIGATION: Does stirring increa
Page 179: 3. What did we change in this inves
Page 183 and 184: We have learnt a lot about solution
Page 185 and 186: ACTIVITY: Thinking about pollution
Page 187 and 188: 8. How do you think oil ends up in
Page 189 and 190: Wetlands are not necessarily wet th
Page 191 and 192: INSTRUCTIONS: 1. Drill ahole in the
Page 193 and 194: QUESTIONS Do you remember studying
Page 195 and 196: REVISION: 1. Look at the picture be
Page 197 and 198: Water is very important for us and
Page 199 and 200: QUESTIONS 1. What does 'clean water
Page 201 and 202: ACTIVITY: Cleaning water in astill
Page 203 and 204: Filtering is agood way of removing
Page 205 and 206: 2. What size and shape will your fi
Page 207 and 208: MAKE: Now that you have a design, i
Page 209 and 210: How is water cleaned by municipalit
Page 211 and 212: STEP 3: AERATION The raw water now
Page 213 and 214: 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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