Pioneers in Science and Space Exploration
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Questions and Answers

Which scientist proposed the steady state theory?

  • Fred Hoyle (correct)
  • Irene Uchida
  • Vera Rubin
  • Katherine Johnson
  • Katherine Johnson was involved in computing trajectories for space missions.

    True

    What significant contribution is Mario Molina known for?

    his work on the ozone layer depletion

    _______ Brill designed propulsion systems for unmanned spacecraft.

    <p>Yvonne</p> Signup and view all the answers

    Match the following scientists with their contributions:

    <p>Abdus Salam = Proposed the electroweak theory Eric Kandel = Studied memory and learning Carol Greider = Worked on telomeres and aging Lap-Chee Tsui = Identified gene responsible for cystic fibrosis</p> Signup and view all the answers

    Study Notes

    DIRECTORY

    • Science has become increasingly diverse and connected, with researchers collaborating across fields to increase human knowledge and create more comprehensive theories.

    FRED HOYLE

    • A British astrophysicist who studied the origin of elements in stars.
    • A proponent of the steady state theory, which posits that the average density of the universe remains constant as new matter is created.
    • Coined the term "Big Bang" while disparagingly describing the rival theory.

    IRENE UCHIDA

    • A Canadian medical geneticist who studied how genes and chromosomes impact health.
    • Investigated chromosome differences in various genetic conditions, including Down syndrome.
    • Examined how X-rays affect chromosomes.

    KATHERINE JOHNSON

    • An American mathematician who played a crucial role in calculating trajectories for space missions.
    • Worked with NASA, and manually calculated flight paths for Apollo 11.
    • Worked on US space shuttle programs.

    YVONNE BRILL

    • A Canadian who worked for the Douglas Aircraft Company, and later for NASA.
    • Invented a propulsion system for unmanned spacecraft.
    • Worked on rocket designs and thrusters for weather satellites.

    ABDUS SALAM

    • A Pakistani physicist who studied at the University of Cambridge.
    • Proposed the electroweak theory, explaining weak interaction with electromagnetism.
    • Suggested the existence and exchange of messenger particles.
    • Shared a Nobel Prize in Physics in 1979.

    VERA RUBIN

    • Discovered that stars in outer regions of spiral galaxies rotate as quickly as those closer to the center.
    • This contradicted Newtonian gravity, leading to the hypothesis of dark matter.
    • Examined numerous galaxies, confirmed dark matter's pervasiveness.
    • Received the National Medal of Science in 1993

    PETER HIGGS

    • Studied physics at King's College London and the University of Edinburgh.
    • Developed a theory on the origin of mass.
    • Predicted the existence of a particle known as the Higgs boson, discovered in 2012.
    • Received a Nobel Prize in Physics.

    ERIC KANDEL

    • Studied medicine at New York University, focusing on the cellular basis of behavior.
    • Awarded a Nobel Prize in Physiology or Medicine for work on synapses and memory.
    • Studied short-term and long-term memory in sea slugs.

    MARIO J. MOLINA

    • Studied chemical engineering and identified that CFCs damage the ozone layer.
    • Shared the 1995 Nobel Prize in Chemistry with F. Sherwood Rowland for this research.

    LAP-CHEE TSUI

    • A Canadian born in Shanghai, who made significant contributions to understanding cystic fibrosis.
    • Identified the faulty gene responsible.
    • This research led to new treatment possibilities.

    MAE CAROL JEMISON

    • First African-American woman to travel in space.
    • Became a medical officer and space sciences specialist.

    DONNA STRICKLAND

    • A Canadian optical physicist who developed chirped pulse amplification (CPA).
    • Received a Nobel Prize in Physics with Gérard Mourou for this development.
    • Led ultrafast laser research.

    CAROL GREIDER

    • Focused on telomeres and telomerase.
    • Shared a Nobel Prize in Physiology or Medicine with E. Blackburn and J.W. Szostak.
    • Studies of telomeres and their relation to cell aging and cancer.

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    Description

    This quiz explores the contributions of notable scientists such as Fred Hoyle, Irene Uchida, Katherine Johnson, and Yvonne Brill. Discover their groundbreaking work in fields ranging from astrophysics to genetics and space exploration. Challenge your knowledge of these influential figures who shaped our understanding of science and technology.

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