2. LEARNING TARGET: I can analyze the data to conclude what the most important environmental factors are to consider when manufacturing computers. NOV 04 / 07(skip 20 + 21)Act B22 Environmental Impact of Computers CHALLENGE Q What is the environmental impact of manufacturing a computer? VOCAB: hazardous waste recyclability "dangerous left-overs" how easy to use again

3. 1. Name the parts that make up a desktop computer. STUDENT TALK

4. 1. What materials are computers made of ? student talk 2. Why were certain materials chosen for each part? glass =monitor metal = frame - circuits plastic = just about everything else! glass =transparent metal = conduct electricity plastic = light, strong, easily shaped

5. 3. Which material makes up most of the weight? metals – added up from Table 1

6. 1. What factors are considered for buying a computer? 2. Which of those are “Green factors”? usually in order: cost speed/capabilities warranty none (usually not thought of)

7. PROC AND DATA PROCEDURE: B 52-53 DATA: WS 22.1a/b *Table 1 Pie Graph person – only graph % weight and figure 5% each slice Table 2 is bar graph MATERIALS:

8. Four Conclusions from Table 1 are: 1. plastic most % weight 2. glass close 2 nd % weight 3. plastic + glass = ½ weight 4. metals ~ = other ½ weight

9. Four Conclusions for Table 2 graph: 1. glass heaviest 2. chip wasteful 3. board wasteful AND most is dangerous 4. glass almost no waste

10. ANALYSIS: B 53 Q3 a materials scientist would want manufacturers to find better materials to make computers (less hazardous, recyclable, cheaper, last longer, etc.)

11. ANS CHALLENGE Q What is the environmental impact of manufacturing a computer? A: HW: 1. Check for Missings (ASAP) some parts very little impact, some very high (hopefully “all” can be recycled)