Grade: 7. Subject:Natural Sciences. Topic: Renewable and non-renewable sources of energy
1. What is energy
1.1. 1.Energy is the ability to do work or produce change.Energy exists in various forms, such as: kinetic, potential, thermal, electrical, and chemical. 2. Example of energy: The energy from the sun (solar energy) can be converted into electrical energy using solar panels.
2. What are the sources of energy
2.1. Renewable sources
2.2. Non-renewable
3. Renewable sources
3.1. Definition
3.1.1. Renewable energy is energy derived from natural sources that are replenished at a higher rate than they are consumed.These sources are sustainable as they are not depleted by use. Example: Sunlight and wind are sources that are constantly being replenished. Renewable energy sources are plentiful and all around us.
3.2. Keywords
3.2.1. Sustainable, Green footprint, reusable
3.3. examaples of renewable sources of energy and how they generate energy
3.3.1. 1.solar Power: Harnessing energy from the sun using photovoltaic cells found in solar panels. 2.Wind Power: Utilizing wind turbines to convert kinetic energy from wind into electricity. 3.Hydropower: Generating electricity from the flow of water in rivers or dams
4. Analysis of the two sources
4.1. 1.Advantages of Renewable Energy: Environmentally Friendly: Lower greenhouse gas emissions and reduced pollution. Sustainable: Resources like sunlight and wind are inexhaustible on a human timescale. 2. Disadvantages of Renewable Energy: Intermittency: Sources like solar and wind depend on weather conditions. Initial Costs: High upfront costs for technology and infrastructure.
4.2. 1. Advantages of Non-Renewable Energy: Reliability: Consistent availability and supply. 2. Disadvantages of Non-Renewable Energy: Environmental Impact: High carbon emissions and pollution. Finite Resources: Depletion over time leads to resource scarcity.
5. Non-renewable source of energy
5.1. Definition
5.1.1. Energy from sources that are finite and will deplete over time. These sources are typically associated with higher carbon emissions.
5.1.2. Key words:Fossil fuels, carbon emissions and air pollution