|Name: _________________________||Period: ___________________|
This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Nine: The Smoking Gun, Experimental Signatures.
Multiple Choice Questions
1. Which of the following accurately describes the phenomenon of "quantum tunneling"?
(a) Particles can sometimes "borrow" energy to move in ways impossible in classical physics.
(b) High-energy waves can penetrate the fabric of space-time for very short periods of time.
(c) Some particles are linked together, no matter how much space separates them.
(d) Particles with high energy can vanish in one location, instantly appearing in another.
2. Which of the following is not true according to special relativity?
(a) All objects move at a constant speed through space-time.
(b) Motion and time are relative; they depend on the observer.
(c) No object can move faster than the speed of light.
(d) Time does not pass for objects that are perfectly at rest.
3. Which of the following did Einstein considered time?
(a) The fifth fundamental force of the universe.
(b) A fourth dimension, alongside the three spatial dimensions.
(c) A physical substance, composed of particles.
(d) A three-dimensional field.
4. Which of the following is true of a particle's spin?
(a) It changes depending on the particle's energy.
(b) It increases with each interaction with a particle of greater spin.
(c) It is constant for that particle.
(d) It depends on the strength of the local magnetic field.
5. Which of the following is true regarding our current knowledge of the Calabi-Yau space?
(a) Physicists and mathematicians disagree about its shape.
(b) Its shape is not fully known.
(c) Its shape is totally unknown.
(d) Its shape is completely known and defined.
Short Answer Questions
1. What is the quantum, or messenger particle, of gravity?
2. Which of the following is a correct statement, based on the theory of special relativity?
3. Which of the following best describes a fermion?
4. Which of the following is closest to the Planck length?
5. Why can the objects predicted by string theory not be observed?
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