1B3 Issues of Energy and Natural Resource Extraction Flashcards
Describe how managing energy and natural resources responsibly involves weighing sustainability, environmental impacts, and lifecycle costs of various energy sources and consumer products. (66 cards)
Define:
Sustainable energy use
Using energy without depleting resources or harming the environment.
It focuses on using renewable resources and energy efficiency to reduce environmental impacts and ensure energy availability for future generations.
True or False:
Sustainable energy relies on non-renewable sources.
False
Sustainable energy primarily relies on renewable resources like solar and wind, which regenerate naturally and do not deplete over time.
Define:
energy efficiency
Using less energy to achieve the same result.
Improving energy efficiency means reducing the amount of energy needed for tasks, which saves resources and cuts emissions.
What are resources that regenerate quickly?
Renewable resources
Examples include sunlight, wind energy, hydroelectric energy, biomass energy, and geothermal energy, which are sustainable and environmentally friendly.
What are examples of renewable energy sources?
- Solar energy
- Wind energy
- Hydroelectric energy
- Biomass energy
- Geothermal energy
Renewable energy sources regenerate naturally and are sustainable.
What are examples of non-renewable energy sources?
- Coal
- Oil
- Natural gas
- Nuclear energy (uses finite uranium)
Non-renewable energy sources are finite and take millions of years to form.
Fill in the blank:
________ energy comes from sources that regenerate on a human timescale.
Renewable
Solar, wind, and hydro are examples of renewable resources that can be replenished within our lifetime.
Why is solar energy considered renewable?
It is replenished daily by the sun.
Solar energy harnesses sunlight, a resource that is continuously available and can be used without depleting it.
True or False:
Wind energy is renewable because it is generated by ongoing natural processes.
True
Wind is replenished naturally, and wind energy can be harnessed without depleting the resource.
What is a major advantage of wind energy?
It is clean and renewable.
Wind energy produces no emissions during operation and is a sustainable source of power.
True or False:
Nuclear energy does not produce radioactive waste.
False
Radioactive waste can remains hazardous for thousands of years and requires careful management.
What is a disadvantage of hydroelectric power?
It can disrupt ecosystems.
Dams and reservoirs for hydroelectric power can harm aquatic habitats and alter natural water flow patterns.
True or False
Solar power does not generate pollutants.
True
Solar energy produces clean electricity without emitting harmful substances like CO₂.
What is a major environmental concern with oil extraction?
It can cause spills and pollute ecosystems.
Oil drilling and transportation can lead to catastrophic spills, damaging marine and terrestrial ecosystems.
True or False:
Deforestation reduces the Earth’s ability to absorb CO₂.
True
Trees naturally absorb CO₂, a greenhouse gas. Deforestation eliminates this carbon sink, contributing to higher levels of CO₂ in the atmosphere.
What is a mineral from which metals are extracted?
Ore
Metals like iron, copper, and gold are obtained by mining ores, which contain these valuable elements in concentrated form.
What is the process of clearing forests for agriculture or development?
Deforestation
Deforestation leads to biodiversity loss, increased carbon emissions, and disruptions to local climates. It also impacts the water cycle and soil quality.
True or False:
Sustainable agriculture harms soil health.
False
Sustainable farming practices aim to preserve soil health through crop rotation, reduced chemical use, and conservation techniques.
Fill in the blank:
The method of storing CO₂ to reduce climate change is called ______ __________.
carbon sequestration
Carbon sequestration involves capturing CO₂ from the atmosphere and storing it in natural or artificial reservoirs, such as forests or underground rock formations.
Fill in the blank:
Groundwater is primarily used for ________ and drinking.
irrigation
Groundwater is a vital resource for agriculture and drinking, especially in regions with limited surface water.
What is a risk of over-extracting natural resources?
Depletion and environmental damage.
Over-extraction of resources like water, minerals, or fossil fuels can lead to scarcity and long-term ecosystem harm.
True or False:
Mining can destroy habitats and pollute water.
True
Mining activities can lead to deforestation, water contamination, and the loss of biodiversity.
What describes the growth of cities as people move from rural areas?
Urbanization
Urbanization leads to increased demand for housing, infrastructure, and resources, often at the expense of natural habitats.
What refers as the deterioration of land quality due to human activities?
Land degradation
Practices like overgrazing, deforestation, and poor agricultural methods can degrade soil quality and make land less productive.