Foun 1210.7

Examples of Potential Energy

1. A roller coaster at the top of the highest hill 2. A rubber band pulled way back 3. The highest point when jumping on a trampoline. 4. Bow that is taut all the way back. 5. Battery. 6. Food. 7. Windup Toys. 8. Holding a weight.

Anthropocentrism

A human-centered view of our relationship with the environment.

Non Renewable Energy - Cons

Can produce acid rain weather and other climate events for example contributes to global warming • Produces greenhouse gases and contributes to climate change • Non-renewable, hence once gone it cannot be replaced or revitalized • Pollution grows greater through the by-products that they leave behind and mining of non-renewable energy is causing damage to our environment • Will eventually run out

Sources of Energy - Solar

Direct Solar: Huge amount of energy. ◼ High capital costs. ◼ Low recurrent costs. ◼ Clean and abundant. Also no transmission lines needed. ◼ 2 kinds of applications. ◼ (1) Water heaters, stills and crop dryers use heat directly. ◼ (2) Photovoltaic cells convert sunlight into electricity and store in battery.

first law of thermodynamics

Energy cannot be created or destroyed, only changed from one form to another. For any change Total energy before = Total energy after

Pros of Renewable Energy

Energy security and stable energy prices. Reliability. Continual source of energy. Low cost operation. Low global warming emissions

Non Renewable Energy - Pros

Energy source which is concentrated that is can be found in relatively large amounts • Reliable energy source • Facilities can be built anywhere • Widely available and affordable • No-radioactive waste

Why is Renewable Energy Important

It constantly is replenished and will never run out. It also does not damage the earths environment as much as fossil fuel energy. renewable energy is important for a bunch of different reasons, such as: It reduces GHG`s emissions and reduces the effects on global warming and climate change. Renewable energy sources reduce air and water pollution. It creates a wide range of employment opportunities and other economic benefits. Renewable energy helps to keep energy prices stable and thus helps with energy security. Being renewable, we have an abundant supply of these energy sources - they're unlikely to ever run out, so will last for many years well into the future for many generations from n

Strategies to limit energy waste

Net Metering/feed in tariffs- Private consumers with their own renewable generators are paid for power fed back into national grid. ◼ Carbon/trade tax Done in most of US, Canada, Germany, EU ◼ Co-generation- Use of waste heat from generators or refrigeration for domestic or industrial heating

What is Nonrenewable Energy

Nonrenewable energy is the energy that cannot be replaced or are replaced much more slowly than they are used. It is formed so slowly that for practical purposes, supply is finite. Like COAL. Comes from the remains of plants that died hundreds of millions of years ago • Has the highest level of carbon of all fossil fuels. Oil • Comes from the remains of plants that died hundreds of millions of years ago •Can be extracted and refined to make gasoline, diesel and jet fuel Natural Gas •Formed from the remains of tiny sea plants and animals that died millions of years ago •Mainly composed of methane Nuclear Energy •Energy released when atoms' nuclei are fused together (fusion) or split apart (fission) •Nuclear power plants produce electricity through nuclear fission

What are two TYPES of sources of Energy

Renewable and Non Renewable

Brundtland Report (1987)

Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

The Caribbean is IDEAL for solar energy

The Caribbean Is Ideal For Renewable Energy Solar energy holds, perhaps, the most promise as a future power source. With about 217 days of sunshine a year, the Caribbean has excellent solar resources enabling solar PV plants to generate electricity at similar or less expensive costs than conventional power plants. LONG Today, the Caribbean economy - except for Trinidad and Tobago and now Guyana - is almost entirely dependent on diesel fuel or natural gas. Renewable energy only plays a minor role, even though the region's conditions are ideal for leveraging green energy. Sun and wind are abundant and geothermal energy and hydropower could free the islands almost entirely from fossil fuels. Additionally solar PV technology is ideal for the smaller islands in the Caribbean. The technology can be installed in small units like on roof-tops, be combined with conventional gensets to create a "hybrid" or be complemented with battery storage for a 24/7 power supply. This reduces power generation costs and dependency on fuel imports. Solar power is, therefore, particularly efficient when it is deployed as part of an integrated energy solution. It is currently being encouraged and subsidized in Barbados

What is Energy?

The ability to do work or cause change

What is Work?

The movement of an object in the same direction as the force being applied. The Transfer of Energy.

What is Energy Security

The uninterrupted availability of energy sources at an affordable price.

Direct Solar Energy

Used to heat water, buildings, and generate electricity. Solar Cells, Water Heat, Crop Driers, and stills.

CONS of renewable energy

Vulnerable to weather and other climate events/ ◼ Limited supply of energy. ◼ High cost of development. ◼ Require a large space to set up. ◼ Not available in all areas.

So when work is done on a body

When work is done on a body, Work done = Change in Energy

In direct solar energy

Wind, Hydroelectricity, OTEC, Biofuel, Wave

Rudolf Clausius

developed the concept of entrophy, affecting thermodynamics, which he defined as the way that natural events generally proceed toward states of greater disorder and usually increase in disorder if left uninterrupted

what is Renewable Energy?

energy from a source that is not depleted when used, such as wind or solar power. Hydroelectric, tidal, OTEC, geothermal and biomass. Wood and charcoal ◼ Sustainable -not likely to change in a time-frame relevant to the human race.

Solar Energy

energy from the sun that is converted into thermal or electrical energy.

Types of Energy

kinetic and potential

Forms of energy

light, heat, sound, chemical, nuclear, atomic, mechanical and electric.

What is sustainable development?

promoting a viable economy while maintaining a viable environment and meeting social needs. Development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Encompasses three general policy areas: economic, environmental and social.

Examples of kinetic energy

speeding bullet, flow of electric current, falling rock, flowing water.

Potential Energy

stored energy that results from the position or shape of an object. Potential energy is mechanical or stored energy from an object that comes from factors such as its position relative to others, internal stress, electric charge or its condition rather than motion.

What is kinetic energy?

the energy an object has due to its motion. So ALL MOVING THINGS has KINETIC ENERGY. The heavier an object is, the faster it moves, the more kinetic energy it has.

Egocentrism

the inability to see the world through anyone else's eyes

What are concerns of Energy Usage in TT

◼ A high reliance on fossil fuel and gas imports ◼ High cost of energy ◼ Low competitiveness when compared to other countries outside of the Caribbean ◼ Energy security issues ◼ High inefficiencies and loss of energy during transmission ◼ Energy consumption has been growing, putting further pressure on total energy bills