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
5. Do you think you could further purify the water you filtered by passing it through your filter again? Try it out and see if this makes a dierence. 6. How could you improve your design? 7. What further steps could you take to purify the water which comes out of your filter. COMMUNICATE: The last part in the Design Process is to communicate what you designed and made to others so that they can also learn about what you did, and learn from you. Write a paragraph below where you tell Tom about the filter that you designed and made to take on the camping trip to purify the muddy water in the stream. Tell Tom what you found that worked and what did not work and anything that you would change. 198 Matter and Materials
How is water cleaned by municipalities? Do you have running water in your home? If you have, you are very fortunate, because many South Africans do not. 1 Clean water coming out of the tap. South African municipal water is generally clean and fresh, and safe to drink. How does it get that way? This section tells the story of how water is treated. The water from a tap does not start out clean and fresh. It may come from a river or adam, or it may even be waste water that was used by a community or in afactory. The process of cleaning the water is called water treatment, and the place where it happens is called a water treatment plant. So what exactly happens at a typical water treatment plant? Chapter 6. Processes to purify water VISIT Purifying water while hiking (video). goo.gl/LEB5J VISIT Fun activity to get you thinking about water, and where it goes once we have used it. goo.gl/eh8ke 199
- 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
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- Page 169 and 170: 4. What do we call it when we have
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- 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 and 180: 3. What did we change in this inves
- 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 and 204: Filtering is agood way of removing
- Page 205 and 206: 2. What size and shape will your fi
- Page 207: MAKE: Now that you have a design, i
- Page 211 and 212: STEP 3: AERATION The raw water now
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5. Do you think you could further purify the water you filtered by<br />
passing it through your filter again? Try it out <strong>and</strong> see if this<br />
makes a dierence.<br />
6. How could you improve your design?<br />
7. What further steps could you take to purify the water which<br />
comes out of your filter.<br />
COMMUNICATE:<br />
The last part in the Design Process is to communicate what you<br />
designed <strong>and</strong> made to others so that they can also learn about<br />
what you did, <strong>and</strong> learn from you. Write a paragraph below where<br />
you tell Tom about the filter that you designed <strong>and</strong> made to take<br />
on the camping trip to purify the muddy water in the stream. Tell<br />
Tom what you found that worked <strong>and</strong> what did not work <strong>and</strong><br />
anything that you would change.<br />
198 Matter <strong>and</strong> Materials
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