Ch. 23-24 Key Terms

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Across
  1. 2. a gas that resists further compression because no two electrons can be in the same place at the same time doing the same thing (Pauli exclusion principle)
  2. 5. the cataclysmic explosion produced in a binary system, temporarily increasing its luminosity by hundreds to thousands of times
  3. 7. a boundary in spacetime such that events inside the boundary can have no effect on the world outside it
  4. 8. the disk of gas and dust found orbiting newborn stars, as well as compact stellar remnants such as white dwarfs, neutron stars, and black holes when they are in binary systems and are sufficiently close to their binary companions to draw off material
  5. 11. an increase in wavelength of an electromagnetic wave (light) when propagating from or near a massive object
  6. 12. a region in spacetime where gravity is so strong that nothing—not even light—can escape
  7. 13. a stellar explosion produced at the endpoint of the evolution of stars whose mass exceeds roughly 10 times the mass of the Sun
  8. 14. a disturbance in the curvature of spacetime caused by changes in how matter is distributed
  9. 15. Einstein’s theory relating gravity and the structure (geometry) of space and time
  10. 16. a compact object of extremely high density composed almost entirely of neutrons
Down
  1. 1. the point of zero volume and infinite density to which any object that becomes a black hole must collapse, according to the theory of general relativity
  2. 3. concept that a gravitational force and a suitable acceleration are indistinguishable within a sufficiently local environment
  3. 4. a variable radio source of small physical size that emits very rapid radio pulses in very regular periods that range from fractions of a second to several seconds; now understood to be a rotating, magnetic neutron star that is energetic enough to produce a detectable beam of radiation and particles
  4. 6. a pulsar that rotates so quickly that it can give off hundreds of pulses per second
  5. 9. the upper limit to the mass of a white dwarf (equals 1.4 times the mass of the Sun)
  6. 10. system of one time and three space coordinates, with respect to which the time and place of an event can be specified