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Siemens Stiftung

How long will our energy sources last?

Chart:
A bar chart shows an overview of the remaining years of use of primary energy sources.

Of the fossil energy sources, petroleum will be the first to run out. What is the situation for the other fossil energy sources? Can new technologies delay the point in time when they run out? And is it really true that renewable energy sources never run out?
The time axis has a logarithmic scale.

Information and ideas:
Students learn that the logarithmic scale represents numbers ranging over several powers. More in-depth information regarding how long energy sources will last is provided in the "An overview of energy sources? information sheet.


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Siemens Stiftung

Food production - "energy hog?

Interactive graphic:
Production stages for a food until it is eaten, with the energy consumption and energy-saving potential for each stage.

An industrially produced foodstuff generally has to travel a long way before it lands on our plate. This is illustrated graphically using an example of a food (chicken wings). At each step, the graphic shows what energy is needed for and what measures could be taken to save energy. Synthetic amino acids are named as one energy-saving possibility. All essential amino acids (for example, methionine) can be produced synthetically today and would save up to 95 percent of the energy if used in feed, compared, for example, with growing soy beans. In addition, the use of freshwater and pollution with fertilizers and pesticides would be reduced. Further potential for saving energy can be discussed.

Information and ideas:
Because this media file shows energy consumption in the context of food production and consumption, monitoring one?s own consumption would be appropriate. Students should think of meals for one day that use as little energy as possible for production, transportation, consumption, and waste disposal. The thoughts can range from mostly unprocessed products to completely synthetic products.
The "Meat and sustainability? animated film is suitable to get the students thinking.


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Bild

Siemens Stiftung

Global energy supply - future development

Chart:
The development of the global energy supply from 1990 to 2035 is shown.

Reliable figures are available through 2012; from that date forward, the International Energy Agency must rely on estimates. The represented figures refer to the more optimistic New Policies Scenario, which takes into account political announcements and plans of governments, for example, to reduce CO2 emissions, although they have not yet been implemented. The estimated energy consumption for 2035 is 12,001 mtoe.

Using the following source: International Energy Agency (IEA)


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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.

Video

Siemens Stiftung

Meat and Sustainability

Video:
Animated film that clearly shows the impact of high meat consumption in Germany

On average, each German eats nearly 90 kilograms of meat per year. That is excessive and problematic in many ways. Industrial production of meat is unsustainable in many aspects - area of land use, global food supply, climate change, animal rights, pollution, and health.

What problems are specifically caused by industrial meat production? What are the global consequences? What can be done about it?


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Siemens Stiftung

Global primary energy consumption

Chart:
Global primary energy consumption in 2012

Chart:
A bar chart indicates the extent of primary energy consumption in millions of tonnes of oil equivalents (mtoe) of individual regions of the world and their percentage share of global energy consumption.

Information and ideas:
The following questions are good for a short presentation: Who or what is the OECD? What are the objectives of the OECD? Which countries are OECD members?

Using the following source: International Energy Agency (IEA)


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Siemens Stiftung

Energy Saving: Energy saving as an energy source

Schematic diagram:
On the basis of selected examples, this overview demonstrates that energy saving itself can be described as an "energy source.?

Five examples from everyday life (electric power and heat generation, power distribution, construction, lighting, and transportation) are used to show how energy saving reduces the consumption of individual energy sources (primary or secondary).

Information and ideas:
Students can look for further examples. What is the significance of energy saving in relation to the general scarcity of resources? Can it be equated roughly with the harnessing of renewable energy sources?


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Arbeitsblatt

Siemens Stiftung

How can you save energy at home?

Matching exercise:
Energy-saving tips should be matched with three household areas.

Great potential for saving energy can be found in the areas of heating, electricity, and hot water. For example, someone who leaves lights turned on in unoccupied rooms or leaves windows cracked open all day when the heat is turned on consumes energy unnecessarily. Not only is this carelessness noticeable financially, but it also pollutes the environment and reduces resources. Energy consumption can easily be reduced with the provided tips.

Information and ideas:
Additional ideas can be found in the "Tracking down ?energy hogs?? experimentation instructions and in the "Energy saving (group work)? teaching idea.


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Arbeitsblatt

Siemens Stiftung

Energy comparison of means of transportation (worksheet)

Worksheet:
A car, bus, train, and airplane will be compared in terms of their carbon dioxide emissions and energy consumption.

Based on the specified values for a high-speed train, the students are instructed to enter estimated values for other means of transportation in a table. They will then research the actual values, enter them in the table, and compare them with the estimated values. How well did they estimate the required energy? What is the ecological balance of the individual means of transportation and what factors should be taken into account? Does it make sense for every commuter to drive a car to work alone?

Information and ideas:
Each student should independently think about the estimated values. For the research, the students can work in pairs (at school) or individually (at home). The table can be extended to include research on other means of transport, such as a bicycle, motor scooter, or motorcycle.


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Bild

Siemens Stiftung

Energy consumption of household appliances

Chart:
The chart shows the electric power consumption and, in some cases, the water consumption of certain household appliances. The average consumption figures of appliances from 2009 and 2015 are compared.

The chart shows a comparison of the electric power consumption of dishwashers, washing maschines, fridge-freezers, and tumble dryers. The values for 2015 are based on appliances with efficiency class A+++. It is clear that a savings potential of 15 to 40 percent still exists. For example, a 2015 washing machine uses 40 percent less electricity and 15 percent less water on average than a 2009 washing machine.

Information and ideas:
Apart from using state-of-the art technology, people can also save energy when washing dishes, washing and drying clothes, and cooking through energy-aware behavior. What options are there?


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