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Questions and Answers
What is the range of radiant energies that compose sunlight?
Which type of electromagnetic radiation is NOT part of the solar spectrum?
What type of electromagnetic radiation has the highest energy in the solar spectrum?
Which type of electromagnetic radiation is visible to the human eye?
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What type of radiation makes up gamma radiation?
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What is the term for the entire range of electromagnetic radiation emitted by the sun?
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Which of the following radionuclides emits gamma rays?
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What is the characteristic of gamma radiation in terms of wavelength?
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Gamma radiation is a type of what?
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What is a common feature among iodine-125, iodine-131, cobalt-57, and cesium-137?
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Iodine-125 and iodine-131 are both examples of:
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What is the characteristic of gamma radiation in terms of energy?
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What is the relation between gamma radiation and its wavelength?
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Which of the following is NOT an example of a gamma-ray emitting radionuclide?
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What is a characteristic shared by iodine-125, iodine-131, cobalt-57, and cesium-137?
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What is the primary purpose of the primary treatment phase in sewage treatment?
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What is the main mechanism used in the secondary treatment phase to reduce organic waste?
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What is the characteristic of the water at the final treatment stage?
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In which treatment phase are biological filters and natural processes used?
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What is removed during the primary treatment phase of sewage treatment?
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What is the primary function of certain gases in the atmosphere, such as water vapor, carbon dioxide, methane, and nitrous oxide?
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Which of the following gases is NOT mentioned as a component of the atmosphere that absorbs infrared radiant heat?
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What is the ultimate fate of the infrared radiant heat absorbed by certain gases in the atmosphere?
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What would happen to the Earth's temperature if the gases mentioned in the passage were not present in the atmosphere?
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What is the primary mechanism by which the Earth loses heat?
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Study Notes
Gamma Radiation
- Consists of very energetic photons with short wavelengths, a type of electromagnetic radiation.
- Examples of common radionuclides that emit gamma rays: iodine-125, iodine-131, cobalt-57, and cesium-137.
- Gamma rays are part of the solar spectrum, which includes visible light, infrared light, X-rays, and ultraviolet light.
Atmospheric Absorption
- Certain gases in the atmosphere absorb infrared radiant heat, preventing it from dispersing into space.
- These gases include water vapor, carbon dioxide, methane, and nitrous oxide.
Wastewater Treatment Phases
Primary Treatment
- First phase of treatment, where suspended solid particles and inorganic materials are removed using filters.
Secondary Treatment
- Reduces organic waste material through biological filters and natural degradation processes.
Final Treatment
- Water at this stage is almost free from harmful substances and chemicals.
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Description
Learn about gamma radiation, its properties, and examples of radionuclides that emit gamma rays. Also, discover how certain gases in the atmosphere absorb infrared radiant heat.
