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Grade 6 reading · Biography

Allan Cormack: a Life in Science

Allan Cormack was born in 1924 in Johannesburg, South Africa. Today he is remembered for working out the mathematics behind CT scans.

Cormack was inquisitive. He wondered how doctors could see inside the body in slices, not just in flat X-rays.

In 1956, Cormack began part-time work as a physicist at Groote Schuur Hospital in Cape Town. In 1963, Cormack published the mathematics behind CT scanning.

In 1979, Cormack shared the Nobel Prize in Physiology or Medicine. (X-ray: a kind of invisible light that can pass through the body to make pictures of bones.)

Cormack died in 1998. CT scanners in hospitals everywhere use the ideas he worked out.

Questions

  1. Sequence Which of these happened first?
  2. Details In what year did this happen? "Cormack began part-time work as a physicist at Groote Schuur Hospital in Cape Town."
  3. Timeline math How many years passed between these two events? First: "Cormack published the mathematics behind CT scanning." Later: "He shared the Nobel Prize in Physiology or Medicine."
  4. Vocabulary In the passage, what does "X-ray" mean?
  5. Character traits Which word best describes Allan Cormack?
  6. Evidence Which detail from the passage shows that Cormack was inquisitive?
  7. Main idea What is this passage mostly about?
  8. Text structure How does the author organize the middle of the passage?

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