https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:intro-to-energy-resources-and-consumption/v/renewable-and-nonrenewable-energy-resources 2025-08-08T21:39:42.49220884Z Renewable and nonrenewable energy resources Energy sources are categorized into renewable and nonrenewable types. Nonrenewable energy sources are those that exist in a fixed amount and involve energy transformation that cannot be easily replaced. Renewable energy sources are those that can be replenished naturally, at or near the rate of consumption, and reused. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/4a933d4d-ab94-44f6-bbad-d41266274892_1280_720_base.png Renewable and nonrenewable energy resources Energy sources are categorized into renewable and nonrenewable types. Nonrenewable energy sources are those that exist in a fixed amount and involve energy transformation that cannot be easily replaced. Renewable energy sources are those that can be replenished naturally, at or near the rate of consumption, and reused. https://cdn.kastatic.org/ka-youtube-converted/G2lQFo69_hc.mp4/G2lQFo69_hc.mp4 181 Sources of Energy https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:intro-to-energy-resources-and-consumption/a/renewable-and-nonrenewable-energy-sources 2024-06-21T23:15:14.703721694Z Renewable and nonrenewable energy sources Review your understanding of renewable and nonrenewable energy sources in this free article aligned to AP standards. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:intro-to-energy-resources-and-consumption/e/intro-to-energy-resources-and-consumption 2025-12-18T02:00:41.510401167Z Intro to energy resources and consumption Apply your understanding of intro to energy resources and consumption in this set of free practice questions aligned to AP standards. exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/e/energy-basics-classification-of-sources 2026-04-07T23:17:37.123726494Z Energy Basics & Classification of Sources Lets answer some questions! Shankar R exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/v/natural-resources 2026-05-11T04:40:42.021307954Z Natural resources Humans adapt and thrive using natural resources. Natural resources are things found in nature that can be used by humans. Renewable resources can be replaced over human lifetimes. Nonrenewable resources cannot. Both renewable and nonrenewable resources are unevenly distributed across Earth's surface. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/717cb286-7da3-443b-b8e4-1bc5e7ff3a19_1280_720_base.png Natural resources Humans adapt and thrive using natural resources. Natural resources are things found in nature that can be used by humans. Renewable resources can be replaced over human lifetimes. Nonrenewable resources cannot. Both renewable and nonrenewable resources are unevenly distributed across Earth's surface. https://cdn.kastatic.org/ka-youtube-converted/sIM0PGv8h08.mp4/sIM0PGv8h08.mp4 236 Sources of Energy https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/a/natural-resources 2026-04-30T07:30:36.209464894Z Key points: Natural resources Review your understanding of natural resources in this free article aligned to NGSS standards. article https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/e/natural-resources 2026-04-15T04:20:43.780498197Z Natural resources Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-ii/v/solar-energy 2022-11-08T01:12:28.564445794Z Solar energy Passive solar energy systems absorb heat directly from the sun without the use of mechanical and electric equipment, and energy cannot be collected or stored. Active solar energy systems use solar energy to heat a liquid through mechanical and electric equipment to collect and store the energy captured from the sun. Photovoltaic solar cells capture light energy from the sun and transform it directly into electrical energy. Their use is limited by the availability of sunlight. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/6ed88dc3-2bc9-4ad3-94ea-75036232983a_1280_720_base.png Solar energy Passive solar energy systems absorb heat directly from the sun without the use of mechanical and electric equipment, and energy cannot be collected or stored. Active solar energy systems use solar energy to heat a liquid through mechanical and electric equipment to collect and store the energy captured from the sun. Photovoltaic solar cells capture light energy from the sun and transform it directly into electrical energy. Their use is limited by the availability of sunlight. https://cdn.kastatic.org/ka-youtube-converted/OVODBZUJAYE.mp4/OVODBZUJAYE.mp4 408 Sources of Energy https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/e/using-solar-energy-energy-conservation-in-daily-life 2026-04-15T04:20:43.780498197Z Using solar energy ; Energy conservation in daily life Let's solve some problems to better understand the utilisation of solar energy and energy conservation in daily life. Aakash Bagga exercise https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-ii/a/geothermal-energy 2024-06-21T23:15:14.703721694Z Geothermal energy Geothermal energy uses heat from the Earth to heat or cool air, or to produce electricity. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-ii/a/hydroelectric-power 2024-06-21T23:15:14.703721694Z Hydroelectric power Outlines the advantages and disadvantages associated with three forms of hydropower. article https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/v/windpower 2020-06-23T07:22:40Z Wind power Unlike the water-pumping windmills that inspired them, modern wind turbines generate electricity. But several engineering puzzles must still be solved to make wind power available in all communities.   NOVA video https://cdn.kastatic.org/googleusercontent/agMvP1XRZWVQbHFJOZqkoMyWKfsDUQrL94ZWKCMxLotZKfzTunEKrHcN5Tt_ZSr0ZYnWHIXheXOeo7B8Rhtkllo Wind power Unlike the water-pumping windmills that inspired them, modern wind turbines generate electricity. But several engineering puzzles must still be solved to make wind power available in all communities.   https://cdn.kastatic.org/ka-youtube-converted/SQpbTTGe_gk.mp4/SQpbTTGe_gk.mp4 154 Sources of Energy https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:sources-of-energy/e/wind-power-quiz 2021-06-05T01:56:42Z Wind power quiz Try this quiz about wind power. NOVA exercise https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-i/v/common-fuel-types-and-uses 2025-08-08T21:39:42.49220884Z Common fuel types and uses Fossil fuels, including petroleum, coal, and natural gas, originate from different organic materials and have varied uses and environmental impacts. Nuclear fuel, another nonrenewable energy source, provides a high energy yield but poses challenges with radioactive waste. With growing needs for energy, integrating renewable sources into our energy source mix is important. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/22835b37-9755-473c-aa4d-dcdee9de9c1e_1280_720_base.png Common fuel types and uses Fossil fuels, including petroleum, coal, and natural gas, originate from different organic materials and have varied uses and environmental impacts. Nuclear fuel, another nonrenewable energy source, provides a high energy yield but poses challenges with radioactive waste. With growing needs for energy, integrating renewable sources into our energy source mix is important. https://cdn.kastatic.org/ka-youtube-converted/_N6BfGeC1dY.mp4/_N6BfGeC1dY.mp4 275 Sources of Energy https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:intro-to-energy-resources-and-consumption/a/global-energy-use 2024-06-21T23:15:14.703721694Z Global energy use Review your understanding of global energy use in this free article aligned to AP standards. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-i/v/nuclear-power-generation 2025-08-08T21:39:42.49220884Z Nuclear power generation Nuclear power plants generate electricity by using the heat from nuclear fission to create steam, which spins turbines. This process involves splitting atoms of Uranium-235, a heavy and unstable isotope, in a controlled chain reaction. Nuclear power is considered clean energy because it does not produce air pollutants. The resulting nuclear waste, however, poses significant disposal challenges due to its long-lasting radioactivity. Wieteke Holthuijzen video https://cdn.kastatic.org/ka_thumbnails_cache/4c039f4e-9526-4bf7-8fcb-1ac088ce3800_1280_720_base.png Nuclear power generation Nuclear power plants generate electricity by using the heat from nuclear fission to create steam, which spins turbines. This process involves splitting atoms of Uranium-235, a heavy and unstable isotope, in a controlled chain reaction. Nuclear power is considered clean energy because it does not produce air pollutants. The resulting nuclear waste, however, poses significant disposal challenges due to its long-lasting radioactivity. https://cdn.kastatic.org/ka-youtube-converted/E7UIonbL4FU.mp4/E7UIonbL4FU.mp4 439 Sources of Energy