Lesson Notes By Weeks and Term v5 - Grade 9

Lesson Video

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Performance objectives

• Identify positive and negative impacts of technology on the environment.
• Explain how technology affects different parts of society.
• Analyse technological solutions to environmental problems.
• Apply sustainable development principles to technology.
• Suggest improvements to make technology more sustainable.

Lesson summary

This week, we delve into the crucial relationship between technology, society, and the environment. Technology profoundly impacts our lives, from how we communicate to how we produce food and energy.

However, these technological advancements also have consequences for our society and the environment, both positive and negative. Understanding these interconnected relationships is vital for responsible citizenship and for creating a sustainable future for South Africa. Consider the rise of mobile banking in South Africa - while increasing financial inclusion, it also contributes to e-waste if phones are disposed of improperly.

Lesson notes

2. 1. Technology, Society, and the Environment: A Triangular Relationship Technology, society, and the environment are interconnected in a dynamic and complex relationship. Technology is not developed in a vacuum; it is created to solve problems or meet the needs of society.

However, the application of technology often has unintended consequences for the environment, which, in turn, affects society.

Technology: Refers to the application of scientific knowledge for practical purposes, especially in industry. It includes tools, machines, systems, and processes.

Examples: solar panels, mobile phones, irrigation systems, genetically modified crops.

Society: Refers to a group of people living together in an ordered community. It includes their culture, values, beliefs, and institutions.

Examples: townships, rural communities, businesses, schools, government.

Environment: Refers to the surroundings or conditions in which a person, animal, or plant lives or operates. It includes air, water, land, plants, and animals.

Examples: rivers, forests, mines, oceans, atmosphere. 2.

2. Positive and Negative Impacts of Technology Technology can have both positive and negative impacts on society and the environment. It's crucial to consider both sides when evaluating a technological development.

Positive Impacts: Increased efficiency and productivity (e.g., automated farming). Improved healthcare (e.g., advanced medical imaging). Enhanced communication and information access (e.g., internet). Development of renewable energy sources (e.g., solar and wind power). Sustainable agriculture practices (e.g., precision farming).

Negative Impacts: Pollution (air, water, soil) from industrial processes (e.g., coal mining). Depletion of natural resources (e.g., deforestation for agriculture). E-waste generation from discarded electronic devices (e.g., old cellphones). Social inequalities (e.g., digital divide – unequal access to technology). Climate change due to greenhouse gas emissions (e.g., from burning fossil fuels). 2.

3. Sustainable Development Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs. It involves balancing economic growth, social equity, and environmental protection. The concept emphasizes responsible resource management, minimizing waste and pollution, and promoting social justice. 2.

4. Case Studies in South Africa Mining: While providing jobs and contributing to the economy, mining activities can lead to significant environmental damage, including water pollution, land degradation, and air pollution. The legacy of abandoned mines poses ongoing challenges for communities.

Example: Acid Mine Drainage (AMD) from gold mines in Gauteng pollutes rivers and endangers water supplies. The technology to treat AMD exists, but its implementation requires significant investment and ongoing management.* Agriculture: Modern agriculture relies on technologies like fertilizers, pesticides, and irrigation. While these technologies can increase crop yields, they can also lead to soil degradation, water pollution, and biodiversity loss.

Example: Overuse of fertilizers on maize farms leads to runoff into rivers, causing eutrophication (excessive nutrient enrichment) and harming aquatic life. Solutions include using organic fertilizers and implementing precision agriculture techniques.* Renewable Energy: The development of renewable energy technologies like solar and wind power is crucial for reducing South Africa's reliance on fossil fuels and mitigating climate change.

However, these technologies also have environmental impacts, such as land use for solar farms and visual pollution from wind turbines.

Example: Large-scale solar farms in the Northern Cape require significant land area, potentially impacting biodiversity. Environmental Impact Assessments (EIAs) are crucial to minimize these impacts.* 2.

5. Evaluating Technological Solutions When evaluating a technological solution to an environmental problem, it's important to consider: Effectiveness: Does the solution actually solve the problem?

Efficiency: Is the solution cost-effective and resource-efficient?

Sustainability: Is the solution environmentally and socially sustainable in the long term?

Unintended consequences: Does the solution have any negative side effects? 2.6 Worked

Example: Impact of Cell Phones on Society and Environment in SA Cell phones are ubiquitous in South Africa.

Positive societal impacts: Improved communication, access to information and banking (mobile money), entrepreneurial opportunities.

Negative societal impacts: Cyberbullying, social isolation, distraction, increased crime related to phone theft.

Positive environmental impacts: Reduced need for landlines (reducing copper mining).

Negative environmental impacts: E-waste (toxic materials), energy consumption for charging, mining of rare earth minerals.