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European Consortium for the Certificate of Attainment in Modern Languages (READING) – C1 5

First, there’s the issue of using a food for energy. A senior natural resources officer at the United
Nations Food and Agriculture Organisation says using food for energy – like sugar cane for biofuels –
must avoid decreasing food stocks and competing with farmers. “First we need to see if there are
enough potatoes to eat. Then, we must ensure we are not competing with farmers making income from
selling potatoes.” he explains. “So if eating and selling potatoes are covered, and there’s some potatoes
left, then yes, it can work.”

In a country like Kenya, the potato is the second most important food for families after corn.
Smallholder farmers produced around 10 million tonnes of potatoes this year, yet around 10-20% were
lost in post-harvest waste due to lack of access to markets, poor storage conditions, and other issues.
Potatoes which don’t make it to the market could easily be turned into batteries.

Example:
What is surprising in the scientific finding?
… one potato can provide light for 40 days …

Details that do not answer the question directly will be considered a mistake.
Marking
1 What is Rabinowitch’s motivation?

2 What proves the existence of the energy in the original experiment?

3 What seems to be a contradiction for Rabinowitch?

4 What was the result of applying metals to the potato?

5 Besides the price, what is the advantage of the potato battery?

6 Why are potatos a healthy food for many people?

7 What is the conseqence of the lack of information about potato power?

8 What issues have priorities before we plan to get energy from potatoes? (min. 2)

9 What was the result of poor storage conditions?

10 What is a potential benefit for farmers?

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