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Analyse climate data

11th grade (Year 12 in England) · 16 questions · Common Core: NGSS.HS-ESS3-5, NGSS.HS-ESS2-4, NGSS.SEP 4 · England: GCSE Combined Science: Chemistry of the atmosphere (evaluating evidence for climate change)

Name

Date

Score/ 16

1
Question 1
How do scientists know CO₂ levels from hundreds of thousands of years ago?
- A. they guess
- B. from air bubbles trapped in ice cores from Antarctica
- C. from old newspapers
- D. from satellite photos of the past
2
Question 2
Climate evidence: which statement is NOT true?
- A. Most of the extra CO₂ comes from volcanoes.
- B. Arctic sea ice in summer has shrunk since satellite records began in 1979.
- C. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- D. Sea level is rising as oceans warm and land ice melts.
Question 3
Annual mean CO₂ at the Mauna Loa observatory was about 354 ppm in 1990 and about 414 ppm in 2020. What was the mean rate of increase, in ppm per year? Give 1 decimal place.
Answer
4
Question 4
The CO₂ record from Mauna Loa rises every year but also goes up and down within each year. Why the yearly wiggle?
- A. The instruments are faulty
- B. Volcanoes erupt every winter
- C. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
- D. People burn no fuel in summer
5
Question 5
Climate evidence: which statement is NOT true?
- A. Melting sea ice is the main cause of sea-level rise.
- B. Sea level is rising as oceans warm and land ice melts.
- C. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
- D. Arctic sea ice in summer has shrunk since satellite records began in 1979.
Question 6
Annual mean CO₂ at the Mauna Loa observatory was about 326 ppm in 1970 and about 390 ppm in 2010. What was the mean rate of increase, in ppm per year? Give 1 decimal place.
Answer
7
Question 7
How do scientists know CO₂ levels from hundreds of thousands of years ago?
- A. they guess
- B. from satellite photos of the past
- C. from air bubbles trapped in ice cores from Antarctica
- D. from old newspapers
8
Question 8
Climate evidence: which statement is NOT true?
- A. Arctic sea ice in summer has shrunk since satellite records began in 1979.
- B. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- C. Melting sea ice is the main cause of sea-level rise.
- D. Sea level is rising as oceans warm and land ice melts.
Question 9
Annual mean CO₂ at the Mauna Loa observatory was about 369 ppm in 2000 and about 421 ppm in 2023. What was the mean rate of increase, in ppm per year? Give 1 decimal place.
Answer
10
Question 10
The CO₂ record from Mauna Loa rises every year but also goes up and down within each year. Why the yearly wiggle?
- A. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
- B. The instruments are faulty
- C. People burn no fuel in summer
- D. Volcanoes erupt every winter
11
Question 11
Climate evidence: which statement is NOT true?
- A. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
- B. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- C. Most of the extra CO₂ comes from volcanoes.
- D. Arctic sea ice in summer has shrunk since satellite records began in 1979.
Question 12
Annual mean CO₂ at the Mauna Loa observatory was about 339 ppm in 1980 and about 414 ppm in 2020. What was the mean rate of increase, in ppm per year? Give 1 decimal place.
Answer
13
Question 13
Pre-industrial CO₂ was about 280 ppm. In the 2020s it is above 420 ppm. Roughly what percentage increase is this?
- A. about 150 %
- B. about 50 %
- C. about 5 %
- D. about 15 %
14
Question 14
Climate evidence: which statement is NOT true?
- A. Most of the extra CO₂ comes from volcanoes.
- B. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- C. Sea level is rising as oceans warm and land ice melts.
- D. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
Question 15
Annual mean CO₂ at the Mauna Loa observatory was about 369 ppm in 2000 and about 414 ppm in 2020. What was the mean rate of increase, in ppm per year? Give 1 decimal place.
Answer
16
Question 16
How do scientists know CO₂ levels from hundreds of thousands of years ago?
- A. from air bubbles trapped in ice cores from Antarctica
- B. they guess
- C. from satellite photos of the past
- D. from old newspapers

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Answer key: Analyse climate data

1. B. from air bubbles trapped in ice cores from Antarctica
2. A. Most of the extra CO₂ comes from volcanoes.
3. 2
4. C. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
5. A. Melting sea ice is the main cause of sea-level rise.
6. 1.6
7. C. from air bubbles trapped in ice cores from Antarctica
8. C. Melting sea ice is the main cause of sea-level rise.
9. 2.3
10. A. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
11. C. Most of the extra CO₂ comes from volcanoes.
12. 1.9
13. B. about 50 %
14. A. Most of the extra CO₂ comes from volcanoes.
15. 2.3
16. A. from air bubbles trapped in ice cores from Antarctica