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11th grade weather and climate

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)

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Date

Score/ 16

1
Question 1
Climate evidence: which statement is NOT true?
- A. Arctic sea ice in summer has shrunk since satellite records began in 1979.
- B. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
- C. Most of the extra CO₂ comes from volcanoes.
- D. Sea level is rising as oceans warm and land ice melts.
2
Question 2
A website claims "the climate has always changed, so today's warming is natural". Which response is best supported by evidence?
- A. Natural changes cannot happen
- B. There has been no warming since 1900
- C. Past changes were mostly slower and had natural causes; today's rapid warming matches the rise in CO₂ from human activity
- D. The claim proves humans have no effect
Question 3
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
4
Question 4
Climate evidence: which statement is NOT true?
- A. Arctic sea ice in summer has shrunk since satellite records began in 1979.
- B. Most of the extra CO₂ comes from volcanoes.
- C. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- D. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
5
Question 5
How do scientists know CO₂ levels from hundreds of thousands of years ago?
- A. from satellite photos of the past
- B. they guess
- C. from old newspapers
- D. from air bubbles trapped in ice cores from Antarctica
Question 6
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
7
Question 7
Climate evidence: which statement is NOT true?
- A. Most of the extra CO₂ comes from volcanoes.
- B. Sea level is rising as oceans warm and land ice melts.
- C. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- D. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
8
Question 8
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. People burn no fuel in summer
- C. Volcanoes erupt every winter
- D. The instruments are faulty
Question 9
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
10
Question 10
Climate evidence: which statement is NOT true?
- A. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
- B. Sea level is rising as oceans warm and land ice melts.
- C. Melting sea ice is the main cause of sea-level rise.
- D. Arctic sea ice in summer has shrunk since satellite records began in 1979.
11
Question 11
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. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
- C. People burn no fuel in summer
- D. Volcanoes erupt every winter
Question 12
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
13
Question 13
Climate evidence: which statement is NOT true?
- A. Sea level is rising as oceans warm and land ice melts.
- B. Most of the extra CO₂ comes from volcanoes.
- C. Arctic sea ice in summer has shrunk since satellite records began in 1979.
- D. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
14
Question 14
A website claims "the climate has always changed, so today's warming is natural". Which response is best supported by evidence?
- A. There has been no warming since 1900
- B. The claim proves humans have no effect
- C. Natural changes cannot happen
- D. Past changes were mostly slower and had natural causes; today's rapid warming matches the rise in CO₂ from human activity
Question 15
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
16
Question 16
Climate evidence: which statement is NOT true?
- A. Sea level is rising as oceans warm and land ice melts.
- B. Global average surface temperature has risen by more than 1 °C since the late 1800s.
- C. Burning fossil fuels is the main cause of the recent rise in atmospheric CO₂.
- D. A cold winter in one city disproves global warming.

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Answer key: 11th grade weather and climate

1. C. Most of the extra CO₂ comes from volcanoes.
2. C. Past changes were mostly slower and had natural causes; today's rapid warming matches the rise in CO₂ from human activity
3. 2.3
4. B. Most of the extra CO₂ comes from volcanoes.
5. D. from air bubbles trapped in ice cores from Antarctica
6. 2.3
7. A. Most of the extra CO₂ comes from volcanoes.
8. A. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
9. 2
10. C. Melting sea ice is the main cause of sea-level rise.
11. B. Northern Hemisphere plants absorb CO₂ in spring and summer and release it in autumn and winter
12. 2.3
13. B. Most of the extra CO₂ comes from volcanoes.
14. D. Past changes were mostly slower and had natural causes; today's rapid warming matches the rise in CO₂ from human activity
15. 2
16. D. A cold winter in one city disproves global warming.