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Anderer Ressourcentyp

Siemens Stiftung

Tidal power plant

Simulation:Operating principle of a tidal power plant A tidal power plant makes sense if the height difference between high and low tide is very large. The first (since 1966) and largest tidal power plant is located in Saint-Malo, France (240 MW, 600 million kWh of electricity per year). There are others (or others are planned) in Canada, Russia, and China. The tidal power plant harnesses the power of the enormous water movements during high and low tide. For this purpose, a dam is built across a bay or the mouth of a river and turbines are installed inside the dam. At high tide, the water flows from the ocean side into the bay through the turbines. At low tide, the water flows in the opposite direction and also drives the turbines. Primarily Kaplan tubular turbines are used in this case. Other tidal power plants do without a dam; instead of making use of the height difference of the tides, they take advantage of the currents produced by the tides ("tidal current power plant”).

Anderer Ressourcentyp

Siemens Stiftung

Wind as an energy source

Photo: The effect of wind as an energy source, illustrated by a windsock.Wind is the movement of air masses as a result of temperature fluctuations and the resulting pressure differences in the atmosphere. Solar radiation and the earth’s rotation are the mechanisms driving this phenomenon. Wind occurs at different strengths, from gusts to tornadoes. Wind energy has been used throughout human history - in the form of sailing vessels (3,500 years BCE) and windmills (1,700 years BCE), Today wind is one of the most effective renewable, carbon-dioxide-free energy sources. The photo shows a windsock, which is used to measure the wind on land.Information and ideas:The photo is a good way to visualize the renewable energy source of the wind, and it can be used as introduction or for illustration. Information on the use of wind power can be found in the information module "How a wind power plant works" and in the graphic "Wind turbine - inside view" and elsewhere.

Anderer Ressourcentyp

Siemens Stiftung

B5 Recycling (teacher instructions)

Experimentation instructions for Experimento - 8+:Background information on the content and practical information on conducting the "Recycling” experiment, which comprises three subexperiments.The teacher instructions include information on the following: the main question, relevance to the curriculum, skills, notes on conducting the subexperiments, the research group, further research assignments, and the reference to values.The experiment comprises three subexperiments:• Recycling old materials• Making new from old: Making paper• Recycling organic wasteFrom huge mountains of trash to the recycling of individual materials: By dealing with the topic of recycling, the students will become sensitized to an important topic of environmental protection and sustainable use of our Earth. In working through the planned subexperiments, they will be shown opportunities for how they themselves can make a contribution toward preserving the Earth in their daily lives. The students will learn that waste separation is important and that new products can be made from various old materials.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.

Anderer Ressourcentyp

Siemens Stiftung

Waste separation and avoidance

Experimentation instructions for Experimento - 4+:How much waste is produced in a week?Garbage is produced in many everyday situations and needs lots of space. Separation of gar-bage and avoidance of waste are really easy and quick to do.Information and Ideas:• Please observe the general safety and hygiene measures and safety instructions in the respective teaching methods 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.

Bildungsbereiche

Berufliche Bildung Elementarbildung

Fach- und Sachgebiete

Sachkunde

Lernalter

6-10

Schlüsselwörter

Environmental protection Waste prevention

Sprachen

Englisch

Anderer Ressourcentyp

Siemens Stiftung

A walk to look for garbage

Experimentation instructions for Experimento - 4+:What sorts of things do we find in our local environment? What should not be there?Not everything that is thoughtlessly thrown away in nature rots or is eaten by animals.Information and Ideas:• Please observe the general safety and hygiene measures and safety instructions in the respective teaching methods 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.

Bildungsbereiche

Berufliche Bildung Elementarbildung

Fach- und Sachgebiete

Sachkunde

Lernalter

6-10

Schlüsselwörter

Environmental protection Waste

Sprachen

Englisch

Anderer Ressourcentyp

Siemens Stiftung

Solar electric power plant on open space ("solar field,” "solar park”)

Photo: Photovoltaic power plant in a meadow ("open-space installation").Information and ideas:The photo is suitable for demonstration purposes and contains lots of starting points thematically. Starting from the photo, both the sun as an energy source and also the technological developments associated with it (for example photovoltaics) can be covered. In addition, the economic and social aspects of energy supply can also be discussed.

Anderer Ressourcentyp

Siemens Stiftung

When plants drink

Experimentation instructions for Experimento - 4+:What does contaminated water do to plants?Plants absorb water from the earth through their roots. From the roots the water travels through the stem to the leaves and flowers. This path can be made visible with the dyed water.Information and Ideas:• Please observe the general safety and hygiene measures and safety instructions in the respective teaching methods 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.

Anderer Ressourcentyp

Siemens Stiftung

Firewood as biomass

Photo: Stacked logs Biomass, especially wood, is one of the oldest sources of energy used by humankind. The energy is "obtained” through combustion.

Anderer Ressourcentyp

Siemens Stiftung

Storage power plant

Graphic:Operating principle of a storage power plant In a storage power plant, naturally flowing water is dammed up by means of an artificial reservoir and stored for times of peak demand. The accumulated water is then fed to the turbines of the low-lying power plant via penstocks. All the potential energy of the water in the storage reservoir is thus an energy store for times of peak demand. Smaller storage power plants use Pelton turbines, while large storage power plants (high pressure and large volume of water) use Francis turbines.

Anderer Ressourcentyp

Siemens Stiftung

Link list for the media package "Humanitarian aid - drinking water filters in use"

Link list: Many interesting links on the topics of "Drinking water shortage", "Humanitarian aid", and "Membrane filters". Information and ideas: Equally suitable as a source for Internet inquiry for teachers and students alike.