Italy covers melting glacier with reflective sheets

The video discusses the use of geotextile sheets on the Presana Glacier in Italy to prevent snow melting. These sheets, applied since 2000, reflect sunlight and help conserve about 70% of the snow during summer. Covering 120,000 square meters, the task takes up to six weeks. The glacier has shrunk by a third since 1993 and faces additional melting risks due to algae that absorb sunlight.

What is the purpose of using geotextile sheets on the Presana Glacier?

• To provide a surface for skiing during summer

• To increase the melting rate of the snow

• To prevent the snow from melting by reflecting sunlight

• To enhance the aesthetic appeal of the glacier

How much snow can be preserved over the summer using the protective sheets?

• 70%

• 60%

• 80%

• 50%

What is the total area covered by the protective sheets on the glacier?

• 120,000 square meters

• 100,000 square meters

• 150,000 square meters

• 200,000 square meters

How long does it take to cover the glacier with the protective sheets?

• Six to eight weeks

• One to two weeks

• Two to four weeks

• Four to six weeks

What environmental issue is exacerbated by algae on the glacier?

• Decreased glacier volume

• Increased risk of ice melting

• Decreased sunlight absorption

• Increased snowfall