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    Suchergebnis für 'radiation'



  • Siemens Stiftung
    Radiation balance: Greenhouse effect in the cup
    Graphic labeling: Radiation balance for two experiment setups related to the greenhouse effect: an open plastic container as well as a plastic container with a lid and black paper.In this simplified model experiment, the container wall corresponds to the atmosphere and the black cardboard corresponds to the Earth’s surface (absorber). In the open container without an absorber (on the left), most of the relatively short-wave light shines unhindered through the container; only a small portion is reflected by the container wall and an even smaller portion is absorbed by the probe. The container’s interior barely warms up. In the closed container with the absorber (on the right), the light shining into the container is mostly absorbed by the black cardboard. The heated cardboard emits radiation of longer wavelengths. This long-wave radiation is absorbed by the container’s wall and emitted as radiation: The container’s interior warms up.Image legend:1 Reflection at the container’s wall2 Absorption by the probe3 Absorption by the black cardboard4 Long-wave radiation from the black cardboard5 Absorption and reradiation by the container’s wall6 Radiation by the container’s wall to the surroundings

    Bildungsbereiche
    Fach- und Sachgebiete
    Biologie Chemie Geographie Physik
    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Atmosphere Greenhouse effect Heat Radiation (general)
    Sprachen
    en
    weitere Medien der Reihe:
    B2 Greenhouse effect in a drinking cup (answer sheet)
    Answer sheet:For the student experimentation instructions of the same name.The answer sheet contains sample answers to all questions asked in the ...
    B2 Greenhouse effect in a drinking cup (link list)
    Link list:Further information on the experiment “B2 Greenhouse effect in a drinking cup – A model for illustrating climate change".The links ...
    B2 Greenhouse effect in a drinking cup (student instructions)
    Experimentation instructions for Experimento | 10+:Detailed instructions and questions for students on conducting the experiment "Greenhouse ...
    B2 Greenhouse effect in a drinking cup (teacher instruction)
    Experimentation instructions for Experimento | 10+:Background information on the content and practical information on conducting the experiment ...


  • Siemens Stiftung
    Radiant energy
    Chart:Formulae for the radiant energy of electromagnetic waves and Planck's law of radiation.Radiant energy is the energy of electromagnetic waves. It is proportional to the square of the amplitude of the electrical or magnetic field strength. Electromagnetic waves of high frequency and therefore high energy have the character of particles. The energy of these particles is proportional to the frequency and inversely proportional to their wavelength. The proportionality factor is Planck’s quantum of action h. Max Planck discovered in his investigation of radiation from black bodies that radiation energy must be composed of discrete quanta. He formulated a law of radiation which could not, however, be explained until Einstein postulated light quanta. Numerical example of Planck’s radiation formula:The sun has a surface temperature of 5,800 K; the associated radiant power according to Planck’s radiation formula is 3.85 x 1023 kW. Only a very small proportion of this strikes the earth (with vertical radiation incidence 1.37 kW/m²).Information and ideas:Radiant energy can be converted into other energy forms. In the case of an X-ray radiograph the radiant energy is converted into chemical energy (blackening of the photo film), light is converted into electrical energy in a solar cell, and similarly radio waves in an antenna. The energy of microwaves can be used for heating food.



  • Siemens Stiftung
    Is the greenhouse effect caused by people?
    %nformation module:Without the natural greenhouse effect, there would be no life on earth. But the greenhouse gases such as carbon dioxide and methane are reinforcing the effect in a way that is harmful.The aim is for students to recognize that life on earth as we know it would not be possible without the greenhouse effect. Three scenarios are presented for this: the earth without the greenhouse, the natural greenhouse effect and the anthropogenically enhanced greenhouse effect. The module shows how the complete lack of a greenhouse effect would affect the earth, how the natural greenhouse effect works and why there is an additional, undesired anthropogenically enhanced greenhouse effect. In the case of the anthropogenically enhanced greenhouse effect, an animation shows where the rise in greenhouse gases comes from and how this affects the average temperature on the earth's surface through increased counter-radiation. For the individual greenhouse gases, information can be accessed interactively on the wavelength range within which the thermal radiation is scattered back to the earth.Information and ideas:For the direct reflection of the incoming radiation, an albedo (reflection capacity of diffusely reflecting surfaces such as ice and snow) of approx. 0.30 is assumed with and without atmosphere, since the earth is not an ideal black-body radiator.The anthropogenically enhanced greenhouse effect and changes in solar activity are the main causes of climate change! Scientists have agreed that both effects influence the earth's climate. What has not yet finally been determined is the percentage effect of each factor on the changes in the climate of the earth. In terms of specialist teaching, this subject involves some complex physics. One of the most difficult questions is the matter of radiation balance: Why does it get warm on earth although almost 100% of the earth's energy is radiated away%

    weitere Medien der Reihe:
    Carbon dioxide emissions from power plants
    Chart:A comparison of carbon dioxide emissions for various types of power plants.The chart shows how much carbon dioxide (CO2, given in kg) occurs in ...
    The greenhouse effect and climate change
    Information sheet:The heat radiated by the earth does not reach outer space unimpeded; some of it is absorbed and reflected in the earth's ...


  • Siemens Stiftung
    B2 Greenhouse effect in a drinking cup (teacher instruction)
    Experimentation instructions for Experimento | 10+:Background information on the content and practical information on conducting the experiment "Greenhouse effect in a drinking cup – A model for illustrating climate change". This experiment comprises four subexperiments.This very simple experiment can be used to teach students to readily recognize and differentiate the physical phenomena underlying the greenhouse effect, such as radiation, reflection, absorp-tion, and heat radiation. The students will need some prior knowledge to be able to interpret the results of the experiment. For this reason, the experiment can be used in two ways: Either as verification of material learned after an introduction of the topics mentioned above, or as an introduc-tion to the greenhouse effect, a hot topic in the news, with further study of the physical principles afterwards. The materials and apparatus supplied for this experiment allow eight groups of students to work simultaneously.The experiment comprises four subexperiments:• What influence does it have on the temperature if the cup is closed? – Measurements in an open cup• What influence does it have on the temperature if the cup is closed? – Measurements in a closed cup• What influence does the color of the absorber have? – Measurements in a closed cup with a black absorber• What influence does the color of the absorber have? – Measurements in a closed cup with an aluminum foil absorber Notes: • Observe the safety information in the instructions as well as the applicable safety guidelines for your school.• All materials mentioned in the instructions will have to be purchased directly from commercial sources.

    weitere Medien der Reihe:
    B2 Greenhouse effect in a drinking cup (answer sheet)
    Answer sheet:For the student experimentation instructions of the same name.The answer sheet contains sample answers to all questions asked in the ...
    B2 Greenhouse effect in a drinking cup (link list)
    Link list:Further information on the experiment “B2 Greenhouse effect in a drinking cup – A model for illustrating climate change".The links ...
    B2 Greenhouse effect in a drinking cup (student instructions)
    Experimentation instructions for Experimento | 10+:Detailed instructions and questions for students on conducting the experiment "Greenhouse ...
    Radiation balance: Greenhouse effect in the cup
    Graphic labeling: Radiation balance for two experiment setups related to the greenhouse effect: an open plastic container as well as a plastic ...


  • Siemens Stiftung
    The greenhouse effect and climate change
    Information sheet:The heat radiated by the earth does not reach outer space unimpeded; some of it is absorbed and reflected in the earth's atmosphere. Without this effect, we would be living in a permanent ice age on earth.This information clears up the prejudice that the greenhouse effect is basically something negative. Without the natural greenhouse effect, life on earth would not be possible at all. The gradual increase in global warming, however, is the result of an anthropogenically caused greenhouse effect. The differences are explained. In addition, the fundamental physical facts are presented, i.e. the radiation balance and the radiation absorption of molecules.Information and ideas:You can have your students look for possible ways of reducing the anthropogenically enhanced greenhouse effect in the short, medium or long term. Political, economic and personal aspects can be discussed separately.

    weitere Medien der Reihe:
    Carbon dioxide emissions from power plants
    Chart:A comparison of carbon dioxide emissions for various types of power plants.The chart shows how much carbon dioxide (CO2, given in kg) occurs in ...
    Is the greenhouse effect caused by people?
    %nformation module:Without the natural greenhouse effect, there would be no life on earth. But the greenhouse gases such as carbon dioxide and ...


  • Siemens Stiftung
    B2 Greenhouse effect (worksheet 1 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet for subject teaching in English “B2 Greenhouse effect (worksheet 1),” which is available on the media portal of the Siemens Stiftung.

    weitere Medien der Reihe:
    B2 Greenhouse effect (worksheet 1)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: cloze test developed by ...
    B2 Greenhouse effect (worksheet 2 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 2)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: language building blocks ...
    B2 Greenhouse effect (worksheet 3 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 3)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: expert method developed by ...


  • Siemens Stiftung
    B2 Greenhouse effect (worksheet 1)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: cloze test developed by Josef Leisen and Heinz Klippert.Note: This worksheet has been developed especially for subject teaching in English and for language-sensitive subject teaching. It uses the cloze test methodology tool developed by Josef Leisen and Heinz Klippert. The cloze test is used to review and summarize a topic. It is also suited for internal differentiation.Students whose native language is not English and who do not have strong English skills receive support and training in understanding the technical vocabulary. They work with the specialized vocabulary and in this way acquire the ability to communicate about specific subjects.

    weitere Medien der Reihe:
    B2 Greenhouse effect (worksheet 1 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 2 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 2)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: language building blocks ...
    B2 Greenhouse effect (worksheet 3 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 3)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: expert method developed by ...


  • Siemens Stiftung
    B2 Greenhouse effect (worksheet 2 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet for subject teaching in English “B2 Greenhouse effect (worksheet 2),” which is available on the media portal of the Siemens Stiftung.

    weitere Medien der Reihe:
    B2 Greenhouse effect (worksheet 1 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 1)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: cloze test developed by ...
    B2 Greenhouse effect (worksheet 2)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: language building blocks ...
    B2 Greenhouse effect (worksheet 3 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 3)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: expert method developed by ...


  • Siemens Stiftung
    B2 Greenhouse effect (worksheet 2)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: language building blocks developed by Josef Leisen and Heinz Klippert.Note: This worksheet has been developed especially for subject teaching in English and for language-sensitive subject teaching. It uses the Language building blocks methodology tool developed by Josef Leisen and Heinz Klippert. Language building blocks support sentence formation and introduce students to the writing of technical texts step-by-step.Students whose native language is not English and who do not have strong English skills receive support and training in understanding the technical vocabulary. They work with the specialized vocabulary and in this way acquire the ability to communicate about specific subjects.

    weitere Medien der Reihe:
    B2 Greenhouse effect (worksheet 1 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 1)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: cloze test developed by ...
    B2 Greenhouse effect (worksheet 2 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 3 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 3)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: expert method developed by ...


  • Siemens Stiftung
    B2 Greenhouse effect (worksheet 3 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet for subject teaching in English “B2 Greenhouse effect (worksheet 3),” which is available on the media portal of the Siemens Stiftung.

    weitere Medien der Reihe:
    B2 Greenhouse effect (worksheet 1 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 1)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: cloze test developed by ...
    B2 Greenhouse effect (worksheet 2 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 2)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: language building blocks ...
    B2 Greenhouse effect (worksheet 3)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: expert method developed by ...


  • Siemens Stiftung
    B2 Greenhouse effect (worksheet 3)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: expert method developed by Josef Leisen and Heinz Klippert.Note: This worksheet has been developed especially for subject teaching in English and for language-sensitive subject teaching. It uses the expert method methodology tool developed by Josef Leisen and Heinz Klippert. The expert method motivates the students to work on their own by grappling independently with problems and passing on newly acquired knowledge to the other students.Students whose native language is not English and who do not have strong English skills receive support and training in understanding the technical vocabulary. They work with the specialized vocabulary and in this way acquire the ability to communicate about specific subjects.

    weitere Medien der Reihe:
    B2 Greenhouse effect (worksheet 1 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 1)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: cloze test developed by ...
    B2 Greenhouse effect (worksheet 2 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...
    B2 Greenhouse effect (worksheet 2)
    Worksheet for subject teaching in English:For the student experimentation instructions of the same name. Methodology tool: language building blocks ...
    B2 Greenhouse effect (worksheet 3 answer sheet)
    Answer sheet:For the worksheet of the same name for subject teaching in English.You can find more detailed information on the associated worksheet ...


  • Siemens Stiftung
    B2 Greenhouse effect in a drinking cup (answer sheet)
    Answer sheet:For the student experimentation instructions of the same name.The answer sheet contains sample answers to all questions asked in the student experimentation instructions. In some cases, the answers are very short, often only in the form of key words. Depending on the learning objective, they can be augmented and enlarged upon with additional material from textbooks or Internet research.Likewise, the answer sheet will be elaborate on the analyses for the individual subexperiments, but only in cases where experience shows that there could be difficulties.You will find more detailed information in the related experimentation instructions “B2 Greenhouse effect in a drinking cup (student instructions)", which are available on the media portal of the Siemens Stiftung.

    weitere Medien der Reihe:
    B2 Greenhouse effect in a drinking cup (link list)
    Link list:Further information on the experiment “B2 Greenhouse effect in a drinking cup – A model for illustrating climate change".The links ...
    B2 Greenhouse effect in a drinking cup (student instructions)
    Experimentation instructions for Experimento | 10+:Detailed instructions and questions for students on conducting the experiment "Greenhouse ...
    B2 Greenhouse effect in a drinking cup (teacher instruction)
    Experimentation instructions for Experimento | 10+:Background information on the content and practical information on conducting the experiment ...
    Radiation balance: Greenhouse effect in the cup
    Graphic labeling: Radiation balance for two experiment setups related to the greenhouse effect: an open plastic container as well as a plastic ...
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