Topic 4 - The use of electrical energy affects society and the environment Flashcards
What is Fossil Fuels?
Created from the decomposition of prehistoric plants & animals.
What is Turbine?
Machine which utilizes the flow of a fluid. Examples: steam, water, air to rotate a shaft.
What is DC Generator?
Motor which runs in reverse.
What is AC Generator?
It is something that would not work as a motor.
What is a Nuclear Fission?
Splitting of atoms which remodels them into lighter elements which releases huge amounts of energy.
What is Geothermal Energy?
Energy from the center of the Earth.
What is a Biomass?
Organic matter, used as an energy source. Example: food, agricultural waste
What is Cogneration?
Use of waste energy from a process for another purpose. Example: heating or generating electricity.
What are Alternative Energy Sources?
Tides, Wind, Sunlight
What are some information about Tides?
- Water moving can also power turbines which run generators.
It is another way to use water to produce electricity.
What are some information about Wind?
- Moving air can spin blades of windmills and generate electricity.
- Used to capture natural energy and turn it into electricty.
What are some information about Sunlight?
- The suns energy sends electrons from 1 silicion layer to another creating a voltage.
- Photovoltare effect was first formed by Alexandre Edmond Becquerel in the year 1839.
What is a Fuel Cell?
A fuel cell generates electricity directly from a chemical reaction with a fuel. Example: hydrogen
What is a Nonrenewable resource?
Resource, that cannot be restored. Example: coal, natural gas
What is a Renewable resource?
Resource which is continually restored an therefore can be utilized or used indefinitely.
What is Fly Ash?
Fine airborne ash produced by burning coal, and solid fuels.
What is Soil Disruption?
Soil disruption is the Elimination of natural ecosystems which is a problem created by the production of electricity.
What is the Disadvantages of Electrical Technologies?
- Technology needs resources to produce and operate devices making sustainability more hard to achieve.
- Out-of-date are left behind, damaged as waste.
- Some technologies, are very expensive for all countries to afford.
What is the Benefits of Electrical Technologies?
Several jobs can run faster or more smoothly.
What is a Binary Number?
Numbers with just ones and zeroes.
