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Efficiency means using less energy to perform the same task (e.g., replacing an incandescent bulb with an LED bulb).
Used in nuclear fission to generate massive amounts of thermal energy without burning fuel. 2. Renewable Energy Resources
Q: Why are oil, natural gas, and coal called "fossil fuels"? section 15.3 energy resources answer key pdf
Energy resources are categorized into two main types: and nonrenewable . While nonrenewable resources (like coal and oil) exist in limited supplies, Section 15.3 focuses on sources that can be replenished. Key Renewable Resources Defined
Methods used to decrease energy consumption or increase efficiency. 2. Section 15.3 Key Concepts & Definitions
Before diving into the answer key, let’s recap the core topics typically found in Section 15.3: . Disclaimer: This content is for educational purposes
Answer: c) Can be replenished naturally
To excel in Section 15.3 assessments, students must be able to weigh the pros and cons of different energy types. Energy Source Major Advantage Major Disadvantage Nonrenewable Inexpensive, abundant, high energy density High air pollution, greenhouse gas emissions Petroleum / Oil Nonrenewable Ideal for liquid transportation fuels Geopolitical instability, oil spills, CO2cap C cap O sub 2 Natural Gas Nonrenewable Burns cleaner than coal or oil Primarily methane (a potent greenhouse gas), fracking risks Nuclear Fission Nonrenewable Zero greenhouse gas emissions during operation Radioactive waste disposal, high plant construction costs Hydroelectric Reliable, can adjust to peak demand
This involves finding ways to use less energy or use it more efficiently. Used in nuclear fission to generate massive amounts
Biomass is chemical energy stored in living or recently living organic matter. Examples include burning wood, corn-based ethanol, and biodiesel. Energy Conservation and Efficiency
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