Contributions of Notable Scientists

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Questions and Answers

What was the main scientific contribution of Abdus Salam?

  • Calculating trajectories for space missions.
  • Proposing the electroweak theory. (correct)
  • Developing a propulsion system for unmanned spacecraft.
  • Investigating the relationship between genes and health.

Which scientist's work contradicted classical Newtonian gravity?

  • Yvonne Brill
  • Vera Rubin (correct)
  • Irene Uchida
  • Katherine Johnson

What theory did Fred Hoyle develop regarding the universe?

  • Steady state theory. (correct)
  • Theory of relativity.
  • Big Bang theory.
  • Quantum theory of gravity.

What significant role did Katherine Johnson play in the Apollo 11 mission?

<p>Calculated the mission's trajectories. (D)</p> Signup and view all the answers

Which aspect explored by Irene Uchida relates to genetic disorders?

<p>Chromosome differences in genetic conditions. (A)</p> Signup and view all the answers

What major scientific contribution is Eric Kandel known for?

<p>Researched the cellular basis of behavior (D)</p> Signup and view all the answers

Which scientist is associated with the prediction of the Higgs boson?

<p>Peter Higgs (A)</p> Signup and view all the answers

What important environmental issue did Mario J. Molina help identify?

<p>The depletion of the ozone layer due to CFCs (D)</p> Signup and view all the answers

Which achievement is Mae Carol Jemison known for?

<p>Being the first African American woman in space (B)</p> Signup and view all the answers

What was the focus of Carol Greider's Nobel Prize-winning research?

<p>Research on telomeres and telomerase enzyme (D)</p> Signup and view all the answers

What technological advancement is Donna Strickland known for?

<p>Development of chirped pulse amplification (B)</p> Signup and view all the answers

In what year was Peter Higgs awarded the Nobel Prize in Physics?

<p>2013 (A)</p> Signup and view all the answers

Which factor contributed to the downfall of CFC use identified by Molina?

<p>Destruction of the ozone layer (D)</p> Signup and view all the answers

Which scientist is associated with the discovery of the gene responsible for cystic fibrosis?

<p>Lap-Chee Tsui (D)</p> Signup and view all the answers

What theory did Fred Hoyle support that was later largely discredited?

<p>Steady state theory (A)</p> Signup and view all the answers

Which physicist contributed to the understanding of memory and learning through the study of synapses?

<p>Eric Kandel (D)</p> Signup and view all the answers

Which individual's work led to the banning of chlorofluorocarbons (CFCs)?

<p>Mario Molina (A)</p> Signup and view all the answers

Which scientist was the first African American woman to travel in space?

<p>Mae Carol Jemison (C)</p> Signup and view all the answers

Which scientist's work involved the study of telomeres and their relation to cancer?

<p>Carol Greider (C)</p> Signup and view all the answers

What significant prediction was made by Abdus Salam's electroweak theory?

<p>The unite forces of weak interaction and electromagnetic force (A)</p> Signup and view all the answers

What mechanism did Donna Strickland help develop in the field of laser physics?

<p>Chirped pulse amplification (C)</p> Signup and view all the answers

Which scientist's discoveries contradicted Newton's laws regarding star velocities in galaxies?

<p>Vera Rubin (D)</p> Signup and view all the answers

Who shared the Nobel Prize in Physics with Eric Kandel for work related to behavior?

<p>Two other researchers (C)</p> Signup and view all the answers

Which scientist contributed to astronautical calculations and played a role in the Apollo 11 mission?

<p>Katherine Johnson (B)</p> Signup and view all the answers

What major concept did Fred Hoyle coin during a radio talk?

<p>Big Bang (C)</p> Signup and view all the answers

Which of the following scientists contributed to the development of thrusters for unmanned spacecraft?

<p>Yvonne Brill (D)</p> Signup and view all the answers

Which scientist extensively investigated congenital abnormalities and their genetic components?

<p>Irene Uchida (D)</p> Signup and view all the answers

Flashcards

Hoyle's Steady State Theory

A theory suggesting the universe is constantly expanding and creating new matter, without any beginning or an end.

Irene Uchida's Research

Investigated the links between genes, chromosomes and health, particularly chromosome variations in genetic disorders.

Katherine Johnson's Role in Space Missions

Calculated trajectories for important space missions, including Alan Shepard's, and contributed to Apollo 11 & the US space shuttle programs.

Yvonne Brill's Inventions

Invented a propulsion system for unmanned spacecraft, contributed to rocket designs, weather satellites, and US moon missions

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Salam's Electroweak Theory

Explained how the weak force works between subatomic particles, forming a unified theory with electromagnetism

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Eric Kandel's Research

He studied how synapses, the connections between neurons, are involved in memory formation.

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Peter Higgs's Discovery

He proposed a theory explaining the origin of mass in elementary particles, predicting the existence of the Higgs boson.

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Mario Molina's Environmental Impact

He discovered that CFCs (chlorofluorocarbons) damage the ozone layer, leading to regulations limiting their use.

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Lap-Chee Tsui's Breakthrough

He co-discovered the gene mutation responsible for cystic fibrosis, a genetic disorder.

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Mae Jemison's Milestone

She became the first African American woman to travel to space.

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Donna Strickland's Innovation

She developed chirped pulse amplification (CPA), a technique for generating intense laser pulses.

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Carol Greider's Research on Telomeres

She co-discovered the enzyme telomerase, which is involved in maintaining the ends of chromosomes (telomeres).

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What are telomeres?

Telomeres are protective caps at the ends of chromosomes, similar to the plastic tips on shoelaces. They prevent DNA damage and degradation.

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Fred Hoyle

A British astrophysicist who proposed the theory of element formation within stars and supported the steady-state theory of the universe.

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Steady State Theory

A cosmological theory suggesting the universe is expanding but remains at a uniform density due to ongoing matter creation.

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Big Bang Theory

The prevailing cosmological theory explaining the origin and evolution of the universe from an extremely hot and dense state.

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Katherine Johnson

An American mathematician known for calculating trajectories for space missions, including Alan Shepard's first spaceflight and Apollo 11.

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NACA

The National Advisory Committee for Aeronautics, a predecessor to NASA, employing Katherine Johnson.

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Yvonne Brill

Canadian engineer who invented a propulsion system to keep unmanned spacecraft in stationary orbit and worked on various space technologies.

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Abdus Salam

A Pakistani physicist who proposed the electroweak theory, unifying weak interaction with electromagnetism.

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Electroweak Theory

A model unifying the weak force and electromagnetic force, describing their interaction between subatomic particles.

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Vera Rubin

An American astronomer who discovered that stars in galactic outer regions orbit as fast as those near the center, leading to the concept of dark matter.

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Dark Matter

A hypothetical form of matter that interacts weakly with visible matter and cannot be observed directly.

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Eric Kandel

A Nobel Prize-winning neurobiologist whose research on the cellular basis of behavior focused on synapses and their role in memory.

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Mario Molina

A Mexican chemist who, with Rowland, showed that chlorofluorocarbons (CFCs) deplete the ozone layer.

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Lap-Chee Tsui

A Chinese-Canadian medical geneticist who discovered the gene responsible for cystic fibrosis, a genetic condition affecting mucus production and causing lung issues.

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Mae Carol Jemison

The first African American woman in space, who flew on the space shuttle Endeavour.

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Donna Strickland

A Canadian physicist co-inventor of chirped pulse amplification (CPA), a technique creating intense laser pulses.

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Carol Greider

A molecular biologist who researched telomeres, the protective DNA ends of chromosomes, earning her a Nobel Prize.

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