Renewable Energy Sources
What is this energy source harnessed from the sun's rays?
Solar energy
How do natural bio-polymers minimize environmental impact compared to man-made materials?
They typically require less energy to produce, are biodegradable, and may be less toxic.
How do electric vehicles indirectly contribute to carbon dioxide emissions?
If the electricity used to charge them is generated from fossil fuels, there are still emissions associated with electricity generation.
Which scenario best describes biomimicry?
A chameleon changing its color to match its surroundings.
Briefly summarize the three principles of sustainable product design discussed in class.
These principles could be designing for longevity, using recycled or recyclable materials, and minimizing energy consumption throughout the product life cycle.
What distinguishes natural polymers from other materials in terms of their origin?
They originate from plants, animals, or minerals.
Give an example of a natural source of renewable energy.
solar, wind, hydro, geothermal.
Explain two benefits of introducing electric vehicles besides reducing carbon dioxide emissions.
They can improve air quality in urban areas and reduce noise pollution.
What biomimicry technique could be used to locate a lost plane in the ocean?
Bat's sonar sensing.
How can limited-life geotextiles be important in green engineering?
They can be used for temporary erosion control, filtration, and drainage applications, reducing the environmental impact of construction projects.
Why are natural organic fibers considered more sustainable than traditional synthetic fibers?
They are biodegradable and require less processing.
What is the defining characteristic of "renewable energy"?
It comes from a source that can be replenished at a human timescale.
What are some types of biofuels, which are considered a renewable energy source?
biogas, biodiesel, ethanol.
Briefly explain the concept of biomimicry.
It is the imitation of nature's designs and processes to solve human problems.
What is the least energy-intensive water treatment process?
Filtration.
What three characteristics must ALL sustainable materials exhibit?
Renewability, durability, and ready availability.
Using natural light and ventilation instead of relying solely on artificial systems is an example of this green building principle.
Passive design
What is the rating system that evaluates the environmental performance of buildings?
LEED (Leadership in Energy and Environmental Design)
Discuss the importance of limited-life geotextiles in green engineering projects.
Limited-life geotextiles offer a more sustainable option compared to traditional materials by allowing for biodegradation or easier removal at the end of their service life, minimizing environmental impact.
What is the defining characteristic of "renewable energy"?
It comes from a source that can be replenished at a human timescale.
Green building design incorporates features that reduce the _ of energy and resources.
Consumption
Green roofs and rainwater harvesting are examples of _ strategies that can be implemented in buildings.
Water management
What is the correct order of the product design process?
Idea - Simulation - Prototype - Testing - Manufacturing - Commissioning - Commercialization.