EXCERCISES 1 Answer the questions. Is the water on the Earth’s surface mainly saline or freshwater? How do rapid population growth, urbanisation, climate change, and lifestyle changes affect water? Why can water be considered a renewable resource? What are the consequences of living without purified drinking water? Why can freshwater be considered a non-renewable resource? If underground water resources are not managed sustainably, what will the consequences be? 1. 2. 3. 4. 5. 6. Map of water shortage 2 Find terms corresponding to these definitions. Plantation of grapevines ............................................................................. Free from pollutants or contaminants ................................................... Use of sanitary measures ............................................................................. Inexhaustible or replaceable by new growth ............................................. Degree .................................................................................................. Extreme hunger ................................................................................ 1. 2. 3. 4. 5. 6. 3 Watch the video and complete the sentences with the missing word. In the desert, energy is only supplied from .............................................................................. The main component of this device is .............................................................................. The water content in the atmosphere is particularly high during the .............................................................................. A lid prevents the water vapours escape from the .............................................................................. The water molecules come out of the ............................................................................. when the powder heats up. More MOF powder, or a bigger box allow to collect more .............................................................................. This new Berkeley device has been adapted for use in the ........................................................................... anywhere in the world. The next generation MOF will be made of .............................................................................. 1. 2. 3. 4. 5. 6. 7. 8. UC Berkeley INSERIRE VIDEO: This water harvester can turn desert air into drinkable water posted by FOCUS In Asia and Africa, women must walk an average of 6 kilometres for their water. Within the populations living more than 1 kilometre from a water source, over 880 million people in the world use less than 5 litres a day, whereas most people living in Europe use between 200-300 litres a day. TRAVELLING LONG DISTANCES FOR WATER GLOSSARY aquifer: falda acquifera borehole: pozzo dam: diga to deplete: esaurire ditch: fosso freshwater: acqua dolce glacier: ghiacciaio groundwater: acqua sotterranea ice cap: calotta glaciale moisture: umidità orchard: frutteto reservoir: bacino