7.2 Keeling curve

Eunice Foote tested the effect of _________ on different gases.

• precipitation

• sunlight

• wind

• moonlight

What is the result of Foote's experiment?

• Oxygen traps heat more than other gases do.

• Water vapor traps heat more than other gases do.

• Carbon dioxide traps heat more than other gases do.

• Some gases would give to our Earth a high temperature

According to the video, what had Guy Stewart Callendar done?

• He found greenhouse gases

• He was collecting data from weather stations around the world

• He compared the data of temperature readings and historic measurements of Carbon dioxide

• He found out humans could influence Earth's climate

In 1958, what was Charles Keeling studying?

• The relationship between air acidity and carbon dioxide

• The relationship between water vapour and carbon dioxide

• The relationship between ocean acidity and carbon dioxide

Why did Keeling pick Mauna Loa volcano in Hawaii as the observation spot?

• It is far as possible from the pollution of cities and industry

• The landscape there is wonderful

• It is the middle of North Atlantic Ocean

What did Keeling's data show?

• It showed the variation of carbon dioxide was irregular

• It proved the amount of carbon dioxide was increasing in a slow speed

• It showed there were seasonal variations of carbon dioxide

What is the cause of seasonal variation of carbon dioxide in Keeling's study?

• Human use more coal in winter rather than summer

• Plants grow in spring and die back in autumn

• Ocean absorb more carbon dioxide in summer

Global average temperature increased rapidly after 1980. What human activity that was considered as the largest relevance to this trend?

• The Renaissance

• Famicom was released in Japan by Nintendo

• Industrial Revolution

According to Figure 2 Global mean surface temperature difference during 2016 as compared to the 1961-1990average. Which of following statements are correct?

• Compared to the 1961-1990 average. the overall mean surface temperature of the earth had increased in 2016

• The increase in the Northern Hemisphere is greater than that in the Southern Hemisphere.

• The greatest increase of temperature can be found in Pacific Ocean region

• In the Southern Hemisphere, some parts of the ocean experienced an increase in mean surface temperature

Which of the following statement is correct?

• Climate change refers to global warming only

• The increasing rate of global average temperature has been accelerating from 1880 to 2018 in 7.6 times

• The warmest year on the record is 1990