How Earth's atmosphere changed over time
9th grade (Year 10 in England) · 11 questions · Common Core: NGSS.HS-ESS2-7, NGSS.HS-ESS1-6 · England: GCSE Combined Science: Chemistry of the atmosphere
Name
Date
Score/ 11
Question 1
Which gas makes up most of today's atmosphere?
- A. oxygen
- B. carbon dioxide
- C. argon
- D. nitrogen
Question 2
Dry air is about 21 % oxygen. In 250 cm³ of air, roughly what volume is oxygen, in cm³?
Answercm³
Question 3
Where did most of the oxygen in today's atmosphere come from?
- A. meteorites
- B. volcanic eruptions
- C. photosynthesis by algae and plants over billions of years
- D. melting ice
Question 4
Today's dry air is about 78 % nitrogen and 21 % oxygen. What percentage is made up of all the other gases together?
Answer%
Question 5
Which gas makes up most of today's atmosphere?
- A. argon
- B. oxygen
- C. carbon dioxide
- D. nitrogen
Question 6
Dry air is about 21 % oxygen. In 100 cm³ of air, roughly what volume is oxygen, in cm³?
Answercm³
Question 7
Why did the amount of carbon dioxide in the early atmosphere decrease?
- A. Volcanoes absorbed it
- B. It dissolved in oceans, was used in photosynthesis and was locked in rocks and fossil fuels
- C. It turned into nitrogen
- D. It escaped into space
Question 8
Dry air is about 78 % nitrogen. In 500 cm³ of air, roughly what volume is nitrogen, in cm³?
Answercm³
Question 9
Scientists think the early atmosphere was mostly carbon dioxide, like Venus and Mars today. Why are they not certain?
- A. Nobody has studied rocks
- B. Venus has no atmosphere
- C. There is limited direct evidence from billions of years ago
- D. The atmosphere has never changed
Question 10
Today's dry air is about 78 % nitrogen and 21 % oxygen. What percentage is made up of all the other gases together?
Answer%
Question 11
Which gas makes up most of today's atmosphere?
- A. argon
- B. carbon dioxide
- C. oxygen
- D. nitrogen
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