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Earth's 4.6-billion-year history on a timeline

8th grade (Year 9 in England) · 10 questions · Common Core: NGSS.MS-ESS1-4 · England: KS3 Chemistry: Earth and atmosphere, KS3 Biology: Evolution

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  1. Question 1

    Which came next after this: first dinosaurs (about 230 million years ago)?

    • A. first simple life in the oceans (about 3.8 billion years ago)
    • B. modern humans appear (about 300 000 years ago)
    • C. Earth forms (about 4.6 billion years ago)
    • D. non-bird dinosaurs die out (66 million years ago)

  2. Question 2

    Imagine Earth's 4.6-billion-year history squeezed into one 24-hour day. How many minutes before midnight the Cambrian explosion happened (540 million years ago)? Give 1 decimal place.

    Answermin

  3. Question 3

    Which came next after this: non-bird dinosaurs die out (66 million years ago)?

    • A. oxygen starts building up in the air (about 2.4 billion years ago)
    • B. modern humans appear (about 300 000 years ago)
    • C. first dinosaurs (about 230 million years ago)
    • D. Earth forms (about 4.6 billion years ago)

  4. Question 4

    Imagine Earth's 4.6-billion-year history squeezed into one 24-hour day. How many minutes before midnight the first dinosaurs appeared (230 million years ago)? Give 1 decimal place.

    Answermin

  5. Question 5

    Which came next after this: Cambrian explosion of animal life (about 540 million years ago)?

    • A. modern humans appear (about 300 000 years ago)
    • B. oxygen starts building up in the air (about 2.4 billion years ago)
    • C. first dinosaurs (about 230 million years ago)
    • D. non-bird dinosaurs die out (66 million years ago)

  6. Question 6

    Imagine Earth's 4.6-billion-year history squeezed into one 24-hour day. How many minutes before midnight the Cambrian explosion happened (540 million years ago)? Give 1 decimal place.

    Answermin

  7. Question 7

    Which came next after this: Cambrian explosion of animal life (about 540 million years ago)?

    • A. first dinosaurs (about 230 million years ago)
    • B. non-bird dinosaurs die out (66 million years ago)
    • C. oxygen starts building up in the air (about 2.4 billion years ago)
    • D. Earth forms (about 4.6 billion years ago)

  8. Question 8

    Imagine Earth's 4.6-billion-year history squeezed into one 24-hour day. How many minutes before midnight the first flowering plants appeared (130 million years ago)? Give 1 decimal place.

    Answermin

  9. Question 9

    Which came next after this: first dinosaurs (about 230 million years ago)?

    • A. modern humans appear (about 300 000 years ago)
    • B. oxygen starts building up in the air (about 2.4 billion years ago)
    • C. non-bird dinosaurs die out (66 million years ago)
    • D. Cambrian explosion of animal life (about 540 million years ago)

  10. Question 10

    Imagine Earth's 4.6-billion-year history squeezed into one 24-hour day. How many minutes before midnight the first land plants appeared (470 million years ago)? Give 1 decimal place.

    Answermin

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  1. non-bird dinosaurs die out (66 million years ago)
  2. 169 min
  3. modern humans appear (about 300 000 years ago)
  4. 72 min
  5. first dinosaurs (about 230 million years ago)
  6. 169 min
  7. first dinosaurs (about 230 million years ago)
  8. 40.7 min
  9. non-bird dinosaurs die out (66 million years ago)
  10. 147.1 min