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Description
Flashcards by Hibah Albadri, updated more than 1 year ago
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Created by Hibah Albadri
over 6 years ago
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| Question | Answer |
| What is input energy? | Energy that is applied to an object in different forms. |
| What is an example of this? | When you apply chemical input energy from the food you digest in your body to a bicycle when riding it. |
| What is output energy? | The resultant forms of energy produced from the input energy. |
| What is an example of this? | When riding a bicycle the input energy you put in is turned to many forms of output energy the main one is kinetic output energy. |
| What is useful energy? | Output energy that is used for the purpose it was applied for. |
| What is wasted energy? | Output energy that changes into other forms of energy that are not useful or needed. |
| What is an example useful energy? | The energy that is converted into kinetic energy when riding a bicycle. |
| What is an example of wasted energy? | The energy that is converted to heat energy in your body when riding a bicycle. |
| What is energy efficiency? | The measure of how much of your input energy is wasted in comparison to how much of your input energy is converted to useful energy. |
| How is energy efficiency calculated? | By converting the number of joules for each of the different categories (useful and wasted energy) into percentages out of the total amount of input energy applied at the beginning (100%). |
| What are energy rating labels? | A label that rates an appliance's energy efficiency by using stars (usually out of ten). |
| On what types of appliances are energy rating labels used? | Dishwashers, washing machines and fridges. |
| What benefits does efficient housing usually provide? | Ways to stop much energy use inside the house. |
| What is an example of this? | Efficient housing usually provides adequate whether inside the house at all times reducing the number of times you may have to use the heater of air conditioning. |
| Do houses also include energy efficiency star rating? | Yes, the National House Energy Rating Scheme uses computer simulations to provide energy efficiency star ratings for housing. |
| What are some improvements that can be made to a house's design? | 1. Considering windows (their orientation, tinting, shading etc;). 2. Considering the orientation of the house itself. 3. Including coverings on windows based on their orientation. 4. Constructing the floor, walls and roof out of insulating material. |
| What are some other energy efficient designs that have been studied recently? | LED lighting, solar cars, regenerative braking, lighter cars and magnetic refrigeration. |
| Whom are two people who contributed to aircraft development over time before the Wright brothers? | Sir George Cayley and Jean Marie de Bris. |
| When did the Wright brothers release their first successful glider? | In the year 1902. |
| What was the recorded distance that they were able to fly by 1905? | The distance was 39.4 Km. |
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