19708821
Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
over 4 years ago
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| Question | Answer |
| Name 3 Different Types of Energy | > Chemical > Kinetic > Electrical > Gravitational Potential > Thermal > Nuclear > Elastic Potential > Light > Sound |
| What is Chemical Energy? | Energy stored chemically (eg): Petrol, Coal, Oil, Batteries etc. |
| What is Kinetic Energy? | Movement in General |
| What is Electrical Energy? | Anything with an electrical current |
| What is Gravitational Potential Energy? | Gaining the potential of falling (or energy being gained from being lifted up) |
| What is Thermal Energy? | Ah, that's hot i am slightly sorry but also not ok |
| What is Nuclear Energy? | Energy stored in Nuclear Bonds within Atoms |
| What is Elastic Potential Energy? | Energy being gained from anything being stretched, bent, compressed etc |
| What is Light Energy? | All elements of the electromagnetic spectrum, including visible light, infra-red, ultraviolet, radio-waves, microwaves, mmmmmmmmmmmmmmmmmm) |
| What is Sound Energy? | Energy contained within sound waves |
| State the Law of the Conservation of Energy | Energy cannot be created or destroyed, only transferred (between different types) |
| What is a System? | A separate set / group of objects connected via energy transfers |
| What is the Efficiency Equation? | Efficiency = Useful Energy Transferred ----------------------------------- Total Energy Transferred |
| Efficiency is always between ____ and ____? | 0 and 1 |
| What is the Gravitational Potential Energy Equation? | GPE = mass × graviation field strength × height |
| What is Earth's Gravitational Field Strength (to the nearest whole number)? | 10 |
| What is the Kinetic Energy Equation? | KE = 0.5 × mass × velocity² |
| What is the Elastic Potential Energy Equation? | EPE = 0.5 × spring constant × extension² |
| What is Energy Measured in? | Joules (J) |
| What is an Independent Variable? | A variable being changed |
| What is a Dependent Variable? | A variable being measured |
| Name an Advantage of Coal Power | > High Energy Content per Kilogram > Power Stations are Cheap to Build |
| Name an Advantage of Oil Power | > High Energy Content per Kilogram > Power Stations are Cheap to Build |
| Name an Advantage of Natural Gas Power | > High Energy Content per Kilogram > Power Stations are Cheap to Build > Less Pollution than Coal / Oil |
| Name an Advantage of Nuclear Power | > Very High Energy Content per Kilogram > Very Few Accidents Occur in Nuclear Power Plants |
| Name a Disadvantage of Coal Power | > Pollution of Carbon Dioxide |
| Name a Disadvantage of Oil Power | > Pollution of Carbon Dioxide |
| Name a Disadvantage of Natural Gas Power | > Pollution of Carbon Dioxide |
| Name a Disadvantage of Nuclear Gas Power | > Waste is Hard to Dispose > Severe Accidents > Expensive to Build and Operate |
| How does Solar Energy Work? | > Energy from the Sun > Transfer Light Energy into Photo-voltaic Cells |
| Name an Advantage of Solar Power | > Low Operation Costs > Generate Power in Remote Areas > No Pollution > Energy can be Generated where it will be Used |
| Name a Disadvantage of Solar Power | > Doesn't work at Night > Photo-voltaic Cells are Expensive |
| How does Wind Energy Work? | > Warmer Air Rises and Cooler Air falls to Replace it > Creates Wind > Wind is used to Spin a Turbine |
| Name an Advantage of Wind Energy | > Low Running Cost > No Pollution > Occupied Land can be Used for Farming > "apparently wind farms can become tourist attractions, but when's the last time you wanted to see a wind farm?" |
| Name a Disadvantage of Wind Energy | > Wind is Necessary > it sPoiLs ThE vIEw > Constant Low-Level Noise > Can Interfere with TV and Radio Signals |
| How does Hydroelectricity Work? | > Uses Energy from Flowing Water > Produce Hydroelectricity through Hydroelectric Dams > Traps and Releases Water Under Pressure (not vanilla ice ok.. DAN) |
| Name an Advantage of Hydroelectricity | > Operating Costs are Low > No Pollution > Constantly Producing Electricity as Water can be Stored and Released |
| Name a Disadvantage of Hydroelectricity | > Damn! Dams are expensive > Often Remote, Leading to Higher Distribution Costs > Large, Suitable Areas are Hard to Find |
| How does Geothermal Energy Work? | > The Deeper we Get ( ͡° ͜ʖ ͡°), the Hotter it Gets > This is Geothermal Energy > Either Pump Down Cool Water Down or Inject Water into Hot Rocks > Hot Water Returns up |
| Name an Advantage of Geothermal Energy | > No Pollution > Low Cost |
| Name a Disadvantage of Geothermal Energy | > Difficult to find Suitable Sites > Can "run out of steam" (thanks a lot valve, give me portal 3) > Could Release Dangerous Gasses |
| How does Bio-Energy Work? | > Burning Natural Materials (such as plant and animal matter) > Power Produced is Bio-Energy > Crops such as Wood, Oil-seed Rape and Sugar Beet are specifically Grown for Bio-Energy |
| Name an Advantage of Bio-Energy | > Cheap > Gets Rid of Plant / Animal Waste > Resources not Limited > Could Grow Crops Against Carbon Emissions |
| Name a Disadvantage of Bio-Energy | > Pollution > Needs a lot of Waste > Deforestation |
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