Section: Energy, Power and Climate Change
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Second Law of Thermodynamics | show 🗑
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| Degraded Energy | show 🗑
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| show | energy flow diagram
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| show | source of energy that cannot be used up (eg. –hydroelectric, photovoltaic cells, active solar heaters, wind, biofuels) (NOTE: In most instances, the Sun is the primary energy source for world energy.)
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| show | source of energy that can be used up (eg. – coal, oil, natural gas, nuclear)
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| Energy Density (of a fuel) | show 🗑
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| show | coal, oil, and natural gas (NOTE: Industrialization led to a high rate of energy usage leading to industry being developed near large deposits of fossil fuels.)
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| Chain Reaction | show 🗑
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| Critical Mass | show 🗑
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| show | used for power production
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| show | used for nuclear weapons
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| show | process by which the percentage composition of a desirable radioactive nuclide (eg. – uranium-235) is increased in order to make nuclear fission more likely
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| show | Most neutrons released in fission are fast neutrons, so a moderator is used to reduce their energy down to thermal levels to ensure that the fission is self-sustaining. (eg. – may be made of solid graphite or steam)
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| Control Rods | show 🗑
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| Heat Exchanger | show 🗑
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| show | converts a portion of the solar radiation into a potential difference (voltage) using a semiconductor (A typical photovoltaic cell produces a very small voltage, so it's usually used to run electrical devices that do not require a great deal of energy.)
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| Active Solar Heater (solar panel) | show 🗑
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| Oscillating Water Column (OWC) Ocean-Wave Energy Converter | show 🗑
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| Albedo (α) | show 🗑
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| show | Short wavelength radiation received from the Sun causes the Earth’s surface to warm up.Earth will then emit longer wavelength radiation (infra-red) which is absorbed by some gases (eg. - water vapor) in the atmosphere and re-radiated in all directions.
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| Global Warming | show 🗑
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| show | Human activities, mainly related to the burning of fossil fuels, have released extra carbon dioxide into the atmosphere, thereby enhancing or amplifying the greenhouse effect (a possible cause of global warming).
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| Black-Body Radiation | show 🗑
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| show | The total power radiated by a black-body per unit area is proportional to the fourth power of the temperature of the body. (power = σAT4)
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| Emissivity (ε) | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
mikeyWs4509
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