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Similar to 3. Environmental Science Lesson 3.pptx
3. Environmental Science Lesson 3.pptx
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- 3. 1. The conceptof gravity was discovered by which famous physicist? 2. What is the name of the tallest grass on earth? 3. Which is the most abundant element in the universe? 4. What is the hardest natural substance on Earth? 5. Dolly was the first ever living creature to be cloned. What type of animal was she?
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- 5. Sustainability “meeting the needsof the present without compromising the ability of future generations to meet their own needs.” -UN
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- 8. Sacrifice the fewfor the betterment of the majority Share the resources to all.
- 9. What’s the realproblem? Overpopulation Overconsumption
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- 13. Perpetual Renewable Resources From: EconomicPoint.com:Perpetual resourcesare renewable resources that cannot be exhausted, regardless of their rate of use. Perpetual resources are natural resources, because they are provided by nature without human intervention. Source: https://economicpoint.com/perpetual- resources
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- 15. Solar Energy SOLAR ENERGYCOMES FROM THE SUN. IT DOESN’T DECREASE WHEN USED. SOLAR ENERGY CAN BE CONVERTED INTO ELECTRIC POWER OR CAN BE USED AS THERMAL ENERGY.
- 16. THERE ARE 2WAYS OF PRODUCING ELECTRICITY FROM SOLAR POWER:
- 17. Solar thermal electricity A hightemperature collector concentrates sunlight (using mirrors or lenses) onto a small area. The heat generated is used to drive a heat engine (like a steam turbine) that generates.
- 18. Solar photovoltaic cells A solarpanel containing photovoltaic cells are used to product electrical current.
- 19. Wind The wind existsbecause the sun’s energy heats different regions in different ways. It doesn’t decrease when used. With the use of wind turbines, the wind can be used to produce electricity.
- 20. Geothermal Energy Geothermal energyis another form of perpetual resource. It is derived from the natural heat of the earth. In certain spots, hot water or streams are near the surface and can be piped for it’s direct use (heat generation) or the steam can be used to power turbines and generate electricity.
- 21. Wave Waves are generatedmainly by wind energy, which is in turn a perpetual resource. Waves contain mechanical energy that can be used to produce electrical energy.
- 22. Tidal Energy Tides arethe rise and fall of sea levels caused by the gravitational attraction of the moon and the sun on the ocean. Tides are more predictable than wind, but the high cost of investment and the limited availability of site with high tidal ranges of flow velocity, has limited the investment in this source of perpetual resource.
- 23. Ocean Energy There areother forms of perpetual resources that the ocean could provide, for example marine currents, temperature gradients and salinity gradients. The harnessing of this forms of perpetual resources is still uneconomical and under development.
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- 25. Intermediate Renewable Resources If wedidn’t use them, they would be perpetually renewable, but because they require time (on human time-scales) to regenerate or grow, we can overuse them until they are no longer available.
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- 30. NON-RENEWABLE RESOURCES This Photo byUnknown Author is licensed under CC BY-SA-NC
- 31. Non-renewable resources • Refers toa natural substance that is not replenished with the speed at which it is consumed. • A finite resource. • Nonrenewable resources are extracted directly from the Earth.
- 32. FOUR MAJOR TYPESOF NON-RENEWABLE RESOURCES.
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- 34. Oil Crude oil isa liquid fuel fossil fuel that is used mostly to produce gasoline and diesel fuel for vehicles, and for the manufacturing of plastics. It is found in rocks below Earth’s surface and is pumped out through wells.
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- 36. Natural Gas Natural gasis widely used for cooking and for heating homes. It consists mostly of methane and is found near oil deposits below Earth’s surface. Natural gas can be pumped out through the same wells used for extracting crude oil.
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- 38. Coal Coal is asolid fossil fuel that is used for heating homes and generating power plants. It is found in fossilized swamps that have been buried beneath layers of sediment. Since coal is solid, it cannot be extracted in the same manner as crude oil or natural gas; it must be dug up from the ground.
- 39. Fossil fuel Fossil fuelsare made from decomposing plants and animals. These fuels are found in Earth's crust and contain carbon and hydrogen, which can be burned for energy.
- 40. Pressure and heatworked together to transform the plant and animal remains into crude oil (also known as petroleum), coal, and natural gas.
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- 42. Nuclear Energy Nuclear energy comes fromradioactive elements, mainly uranium, which is extracted from mined ore and then refined into fuel.
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- 44. Informal essay Cite atleast 1 way on how we can conserve our natural resources and discuss your plan of action.
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Editor's Notes
- #12 Why? Because no matter how big you will do to spread awareness, to advocate for the environment, to create a community of eco warriors. The effort will only create a small and almost unnoticeable result. You said that through our small action, then collectively we can make change. But what you know what is the flaw in that statement? There can be small action but no collective effort. Humans won’t do things that is way beyond convenience. Only when it is absolutely necessary when we decide to fix the problem. However, I make this statement today. Tomorrow is another mystery, the possibilities is endless. Yet, I do believe that all of this is our natural destiny and can quite be prophetical. Because, if we consult the bible, what is happening now! Is simply going according to the grand plan of the creator.
- #26 The reason why this resources can be perpetual because of their life cycle.