5482343
Description
Flashcards by Josh Anderson, updated more than 1 year ago
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Created by Josh Anderson
almost 8 years ago
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| Question | Answer |
| Heat transfer - Larger surface area | More infra-red radiation absorbed and emitted |
| Heat transfer - Increased s.a.:vol ratio | Increased infra-red radiation emitted - quicker energy loss |
| Heat transfer - Better conductor | More infra-red radiation absorbed and emitted |
| Specific heat capacity | Energy needed to raise temperature of 1kg of a material by 1 degree Celsius |
| Kilowatt-hours | The amount of electrical energy used by a 1kW appliance left on for 1 hour |
| Sound waves - Increased frequency | Increased pitch |
| Sound waves - Increased amplitude | Increased volume |
| Types of waves- Sound waves | Mechanical Longitudinal |
| Types of waves- Light waves | Transverse |
| Conduction | Heat transfer in solids |
| Convection | Heat transfer in gases and liquids |
| Radiation | Transfer of heat by infra-red radiation (solids, liquids and gases) |
| Factors that affect rate of evaporation | >Temperature >Density >Surface area >Airflow |
| Factors that affect rate of condensation | >Temperature of gas >Temperature of surface >Density >Airflow |
| U-Value | Shows the speed at which heat transfers through a material (Faster in materials with higher U-values, so the lower the U-Value the better the insulator) |
| Electrical energy | Whenever a current flows |
| Light energy | From the Sun, light bulbs, etc. |
| Sound energy | From anything that makes a noise |
| Kinetic energy | From anything that moves |
| Nuclear energy | From nuclear reactions |
| Thermal/heat energy | From objects that release heat |
| Gravitational potential energy | From anything that can fall |
| Elastic potential energy | From something that has been stretched |
| Chemical energy | From food, fuel, batteries, etc. |
| Conservation of energy principle | Energy cannot be created or destroyed |
| Efficiency | Useful energy out ---------------------------- Total energy in |
| Non-renewable resources | Finite amount |
| Renewable resources | Infinite amount |
| CCS | Carbon capture and storage - pumping CO2 to empty fields under the sea |
| Electromagnetic spectrum (increasing freq.) | Radio Micro Infra-red Visible light Ultraviolet X Gamma |
| Doppler effect | Frequency of a source moving towards seems higher (wavelength shorter) Frequency of a source moving away seems lower (wavelength longer) |
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