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Grade 5 reading · Biography

Kathleen Lonsdale: a Life in Science

Kathleen Lonsdale was born in 1903 in Newbridge, Ireland. Today she is remembered for using X-rays to discover the shapes of molecules.

Lonsdale was careful. She measured X-ray patterns by hand for months to be sure her results were right.

In 1929, Lonsdale used X-rays to prove that the benzene ring is flat. In 1945, Lonsdale became one of the first two women elected Fellows of the Royal Society.

In 1949, Lonsdale became a professor at University College London. (Crystal: a solid whose tiny particles are arranged in a repeating pattern.)

Lonsdale died in 1971. Lonsdaleite, a rare form of diamond, is named after her.

Questions

  1. Sequence Which of these happened first?
  2. Details In what year did this happen? "Lonsdale became one of the first two women elected Fellows of the Royal Society."
  3. Timeline math How many years passed between these two events? First: "Lonsdale used X-rays to prove that the benzene ring is flat." Later: "She became a professor at University College London."
  4. Vocabulary In the passage, what does "crystal" mean?
  5. Character traits Which word best describes Kathleen Lonsdale?
  6. Evidence Which detail from the passage shows that Lonsdale was careful?
  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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