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
INVESTIGATE: We now need to do some more investigating about how to purify water. We saw how to purify water using astill and evaporation. But what are the ways to purify water using afilter. Do some research on the internet and in books and answer the following questions. 1. What types of filters can you make? 2. What materials do these filters make use of? 3. What is the purpose of each of the materials used to filter? For example, are some materials there for filtering large particles and some for filtering small particles? If so, which one is which? DESIGN: Let's now get on to designing your filter! Answer these questions before you start drawing your design. 1. What kind of filter are you going to design? 194 Matter and Materials
2. What size and shape will your filter be? 3. What recyclable materials could you use? 4. How are you going to hang it up, for example from the branch of atree? 5. How will you collect the water that has been filtered? Use the space to draw a design for your filter. Remember to label the dierent parts and show which materials you are going to use. Leave some space to do asecond drawing as you might come up with a better design as you are making your filter and see ways to improve it. Chapter 6. Processes to purify water 195
- Page 153 and 154: In the previous chapter, we saw how
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- Page 159 and 160: dissolved limestone can crystallise
- Page 161 and 162: KEY CONCEPTS • A solution is aspe
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- Page 175 and 176: RESULTS: The eect of grain size on
- Page 177 and 178: INVESTIGATION: Does stirring increa
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- Page 181 and 182: REVISION: 1. What are the 3factors
- 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: Filtering is agood way of removing
- 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
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INVESTIGATE:<br />
We now need to do some more investigating about how to purify<br />
water. We saw how to purify water using astill <strong>and</strong> evaporation.<br />
But what are the ways to purify water using afilter. Do some<br />
research on the internet <strong>and</strong> in books <strong>and</strong> answer the following<br />
questions.<br />
1. What types of filters can you make?<br />
2. What materials do these filters make use of?<br />
3. What is the purpose of each of the materials used to filter?<br />
For example, are some materials there for filtering large<br />
particles <strong>and</strong> some for filtering small particles? If so, which<br />
one is which?<br />
DESIGN:<br />
Let's now get on to designing your filter! Answer these questions<br />
before you start drawing your design.<br />
1. What kind of filter are you going to design?<br />
194 Matter <strong>and</strong> Materials
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