WorksheetsSea change na podstawie https://climate.nasa.gov/climate_resourc
Total questions: 10
Worksheet time: 15mins
Sea level has remained fairly constant throughout Earth's history.
True
False
What percentage of heat from global warming has the ocean absorbed in the past 40 years?
11%
35%
90%
Melting sea ice has the potential to raise sea level by several meters.
True
False
The normal temperature range for ocean surface water is:
-2 to 40°C
-5 to 50°C
4.5 to 18°C
-2 to 35°C
What percentage of the world's population lives within 100 kilometers of the shoreline?
about 30%
about 60%
about 70%
Sea level rise contributes to more frequent flooding in which of these coastal areas?
Venice, Italy
Tuvalu
Bangladesh
All of the above
El Niño is the result of global warming.
True
False
Other than melting land-based ice sheets, which of these factors has made the largest contribution to the rise in sea level over the past 100 years?
Warming of ocean surface waters
Melting sea ice
Increased river runoff
The leading cause of coral bleaching over the past 20 years is:
Runoff and pollutants
Overexposure to sunlight
Rising ocean temperatures
Low tides
The acidity of a substance is measured using the pH scale. Ocean water has a pH of approximately 8. That means ocean water is fairly neutral — and slightly basic. However, in the past 100-200 years, scientists have observed that ocean water has become approximately what percent more acidic due to human greenhouse gas emissions?
40%
30%
5%
10%
