MMET 206 - Exam 1 - TAMU - Asadi || A+ Certified.
What are the inputs in a product's life cycle? (3) correct answers Energy
Feedstocks
Transportation
Steps for a Product Life-Cycle Assessment correct answers 1. Produce a Life-Cycle Inventory for
each design
2. Analyze the inputs and outputs for every phase and identify the environmental stressors
3. Add data together for the complete product life cycle and select the design that produces the
least amount of environmental stressors
What are the 4 environmental stressors taken into account when analyzing a product's life cycle?
correct answers -Resource and water consumption
-energy consumption over life
-emission of CO2, NOx, SOx, particulates, etc
-toxic residues, acidification, ozone depletion
What is Life Cycle Inventory (LCI) correct answers Inputs and outputs
After analyzing a products life cycle which design should you select? correct answers The one
that produces the least amount of environmental stressors in which carbon footprint is the main
target
European Union's RoHS restricts the use of the following 6 substances in electrical and
electronic equipment correct answers 1. Lead
2. Mercury
3. Cadmium
4. Cr^+6
5. & 6. PBB and PBDE (flame retardants)
, Definition of Embodied Energy correct answers the energy required to produce raw materials
from ores and feedstocks
How does using recycled materials affect the life cycle of a product? correct answers
Significantly lowers the embodied energy needed
How much embodied energy in steel? correct answers 29 (MJ/Kg)
How much embodied energy in Aluminum Alloys? correct answers 200 (MJ/Kg)
How much embodied energy in Polyethylene? correct answers 80 (MJ/Kg)
How much embodied energy in Concrete? correct answers 1.2 (MJ/Kg)
How much embodied energy in Device-Grade Silicon? correct answers ~2000
Recycling requires ___% less energy with aluminum correct answers 95%
Recycling requires ___% less energy with steel correct answers 33%
Recycling requires ___% less energy with paper correct answers 40%
Recycling requires ___% less energy with plastic correct answers 90%
Recycling requires ___% less energy with glass correct answers 30%
What are the inputs in a product's life cycle? (3) correct answers Energy
Feedstocks
Transportation
Steps for a Product Life-Cycle Assessment correct answers 1. Produce a Life-Cycle Inventory for
each design
2. Analyze the inputs and outputs for every phase and identify the environmental stressors
3. Add data together for the complete product life cycle and select the design that produces the
least amount of environmental stressors
What are the 4 environmental stressors taken into account when analyzing a product's life cycle?
correct answers -Resource and water consumption
-energy consumption over life
-emission of CO2, NOx, SOx, particulates, etc
-toxic residues, acidification, ozone depletion
What is Life Cycle Inventory (LCI) correct answers Inputs and outputs
After analyzing a products life cycle which design should you select? correct answers The one
that produces the least amount of environmental stressors in which carbon footprint is the main
target
European Union's RoHS restricts the use of the following 6 substances in electrical and
electronic equipment correct answers 1. Lead
2. Mercury
3. Cadmium
4. Cr^+6
5. & 6. PBB and PBDE (flame retardants)
, Definition of Embodied Energy correct answers the energy required to produce raw materials
from ores and feedstocks
How does using recycled materials affect the life cycle of a product? correct answers
Significantly lowers the embodied energy needed
How much embodied energy in steel? correct answers 29 (MJ/Kg)
How much embodied energy in Aluminum Alloys? correct answers 200 (MJ/Kg)
How much embodied energy in Polyethylene? correct answers 80 (MJ/Kg)
How much embodied energy in Concrete? correct answers 1.2 (MJ/Kg)
How much embodied energy in Device-Grade Silicon? correct answers ~2000
Recycling requires ___% less energy with aluminum correct answers 95%
Recycling requires ___% less energy with steel correct answers 33%
Recycling requires ___% less energy with paper correct answers 40%
Recycling requires ___% less energy with plastic correct answers 90%
Recycling requires ___% less energy with glass correct answers 30%
