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Англійська мова(edisk_files) / Кузьмина И

8. The Elegant Universe Quiz. Work in groups.

  • 1. According to the standard model, what is the elementary constituent of nature?

  • (A) A point particle

  • (B) A vibrating strand of string

  • (C) A two-dimensional blob

  • (D) A photon

  • 2. How thick is a string?

  • (A) 10–33cm

  • (B) A string is zero dimensional, so it has no thickness

  • (C) A string’s length is 10–33cm, but it has no thickness

  • (D) Planck thickness

  • 3. What is the weakest force of nature?

  • (A) Strong force

  • (B) Weak force

  • (C) Electromagnetism

  • (D) Gravity

  • 4. Which fundamental forces does the standard model describe?

  • (A) Strong force, Electromagnetism, Gravity

  • (B) Dynamic Force, Top Force, Weak Force

  • (C) Strong Force, Weak Force, Electromagnetism

  • (D) Gravity, Escape Velocity, Strong Force

  • 5. What does it mean to describe a particle as “elementary” or “fundamental”?

  • (A) It is a tiny point

  • (B) It cannot be broken up or divided

  • (C) It contains electrons, protons, and neutrons, but nothing else

  • (D) There is no such thing as a fundamental particle

  • 6. What are the problems with string theory today?

  • (A) It cannot be tested

  • (B) Its propositions cannot be proved

  • (C) Its equations are so complex that only approximations exist

  • (D) All of the above

  • 7. The equivalence principle refers to which phenomenon?

  • (A) The similarities of the strong and weak force

  • (B) The impossibility of distinguishing between accelerated motion and gravity

  • (C) The plausibility of all competing versions of string theory

  • (D) The ability of quantum effects to cancel each other out

  • 8. The uncertainty principle is a feature of which theoretical framework?

  • (A) Quantum mechanics

  • (B) Special relativity

  • (C) General relativity

  • (D) String theory

  • 9. Has the universe always been the same size?

  • (A) Yes, and it always will be

  • (B) No, it expanded during the big bang only

  • (C) No, it has been expanding almost since the moment of its origin

  • (D) Scientists have not yet determined if the universe is expanding

  • 10. How did black holes get their name?

  • (A) They are associated with lunar eclipses

  • (B) Nothing, not even light, can escape them

  • (C) Scientists know absolutely nothing about them

  • (D) They cause thunderstorms

  • 11. What is the messenger particle of electromagnetism?

  • (A) Gluon

  • (B) Photon

  • (C) W and Z

  • (D) Neutrino

  • 12. How does the existence of quantum foam clash with Einstein’s general theory of relativity?

  • (A) It moves faster than the speed of light

  • (B) It is weaker than gravity

  • (C) Einstein’s theory presupposes a smooth spatial fabric

  • (D) It doesn’t curve

  • 13. After the first superstring revolution, how many viable versions of string theory emerged?

  • (A) Three

  • (B) Five

  • (C) Ten

  • (D) Eleven

  • 14. How many dimensions of space does the current formulation of string theory require to be viable?

  • (A) Three

  • (B) Five

  • (C) Ten

  • (D) Eleven

  • 15. Why did the existence of a tachyon bring about the collapse of bosonic string theory?

  • (A) It differed from its superpartner by three units

  • (B) It was fluctuating too violently to compute

  • (C) It had a negative mass

  • (D) None of the above

  • 16. Bosonic and fermionic vibrational patterns differ by how much?

  • (A) A whole number

  • (B) A half unit

  • (C) Two

  • (D) They are identical

  • 17. What does the M in M-theory stand for?

  • (A) Mysterious

  • (B) Mega

  • (C) Matrix

  • (D) No one knows

  • 18. How many dimensions does a Calabi-Yau space have?

  • (A) Two

  • (B) Three

  • (C) Five

  • (D) Six

  • 19. Who was the first scientist to argue that light exhibits wave properties?

  • (A) Newton

  • (B) Einstein

  • (C) Planck

  • (D) Feynman

  • 20. What is the basic principle underlying special relativity?

  • (A) The uncertainty principle

  • (B) The equivalence principle

  • (C) The constancy of the speed of light

  • (D) The Euler beta function

  • 21. What do string theorists think that the extra dimensions of space will look like?

  • (A) Tightly curled up strings

  • (B) Two-dimensional branes

  • (C) Three-dimensional blobs

  • (D) All of the above

  • 22. Supersymmetry predicts what about the elementary particles?

  • (A) For every known particle, a heavier superpartner exists

  • (B) Every particle has not one, but two, messenger particles

  • (C) Particles all vibrate in identical patterns

  • (D) More than one version of how particles vibrate is viable

  • 23. Which of the following particles is thought to be massless?

  • (A) Photon

  • (B) Gluon

  • (C) Neutrino

  • (D) Electron

  • 24. Which small-scale phenomenon creates the incompatibility between general relativity and quantum mechanics?

  • (A) Anomalies

  • (B) Quantum foam

  • (C) Neutral electrons

  • (D) Half-integer vibrational patterns

  • 25. What is the term for the approximations string theorists much make in their calculations?

  • (A) M-theory

  • (B) Perturbation theory

  • (C) Mirror symmetry

  • (D) Grand unification