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9th grade earth and rocks

9th grade (Year 10 in England) · 13 questions · Common Core: NGSS.HS-ESS2-6, NGSS.HS-ESS2-7, NGSS.HS-ESS1-6 · England: KS3 Chemistry: Earth and atmosphere, KS4 Combined Science: Earth and atmospheric science, GCSE Combined Science: Chemistry of the atmosphere

Name

Date

Score/ 13

  1. Question 1

    The bar chart shows the composition of dry air (%). About what percentage is oxygen?

    Dry air (%)0102030405060708078nitrogen21oxygen1argon and other gases

    Answer%

  2. Question 2

    Which gas makes up most of today's atmosphere?

    • A. argon
    • B. nitrogen
    • C. oxygen
    • D. carbon dioxide

  3. Question 3

    Today's dry air is about 78 % nitrogen and 21 % oxygen. What percentage is made up of all the other gases together?

    Answer%

  4. Question 4

    Air is about 21% oxygen. About how many cm³ of oxygen are in 1000 cm³ of air?

    Answercm³

  5. Question 5

    Where did most of the oxygen in today's atmosphere come from?

    • A. the oceans boiling
    • B. photosynthesis by algae and plants over billions of years
    • C. the Sun
    • D. volcanoes

  6. Question 6

    The bar chart shows the composition of dry air (%). How many percentage points more nitrogen than oxygen is there?

    Dry air (%)0102030405060708078nitrogen21oxygen1argon and other gases

    Answer%

  7. Question 7

    Scientists think the early atmosphere was mostly carbon dioxide, like Venus and Mars today. Why are they not certain?

    • A. There is limited direct evidence from billions of years ago
    • B. The atmosphere has never changed
    • C. Venus has no atmosphere
    • D. Nobody has studied rocks

  8. Question 8

    Dry air is about 78 % nitrogen. In 200 cm³ of air, roughly what volume is nitrogen, in cm³?

    Answercm³

  9. Question 9

    Air is about 21% oxygen. About how many cm³ of oxygen are in 1000 cm³ of air?

    Answercm³

  10. Question 10

    What happened to much of the carbon dioxide in the early atmosphere?

    • A. It dissolved in oceans and was locked up in rocks and fossil fuels
    • B. It is all still in the air
    • C. It turned into nitrogen
    • D. It escaped to the Moon

  11. Question 11

    The bar chart shows the composition of dry air (%). About what percentage is argon and other gases?

    Dry air (%)0102030405060708078nitrogen21oxygen1argon and other gases

    Answer%

  12. Question 12

    Scientists think the early atmosphere was mostly carbon dioxide, like Venus and Mars today. Why are they not certain?

    • A. There is limited direct evidence from billions of years ago
    • B. The atmosphere has never changed
    • C. Venus has no atmosphere
    • D. Nobody has studied rocks

  13. Question 13

    Today's dry air is about 78 % nitrogen and 21 % oxygen. What percentage is made up of all the other gases together?

    Answer%

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Answer key: 9th grade earth and rocks

  1. 1. 21 %

  2. 2. B. nitrogen

  3. 3. 1 %

  4. 4. 210 cm³

  5. 5. B. photosynthesis by algae and plants over billions of years

  6. 6. 57 %

  7. 7. A. There is limited direct evidence from billions of years ago

  8. 8. 156 cm³

  9. 9. 210 cm³

  10. 10. A. It dissolved in oceans and was locked up in rocks and fossil fuels

  11. 11. 1 %

  12. 12. A. There is limited direct evidence from billions of years ago

  13. 13. 1 %