PHSC 121 Quiz 3

PHSC 121 Quiz 3 Liberty University

  1. The ____ of an object is a measure of the amount of matter it contains. The ____ is a measure of the gravitational force on an object.
  2. The equivalence principle can be best illustrated by ____.
  3. Newtonian physics tells us that Kepler’s second law is a result of the conservation of ____.
  4. If an object’s velocity equals or exceeds the escape velocity, it will follow a closed parabolic or hyperbolic orbit.
  5. According to the DVD “Our Created Solar System,” the large amounts of water on Earth combined with our decaying magnetic field support the claim that our planet is about 4.5 billion years old.
  6. Einstein revolutionized modern physics by ____.
  7. When two objects of unequal mass orbit each other, the center of mass is ____.
  8. According to the DVD “Our Created Solar System,” these features create problems for the view that the Moon is billions of years old.
  9. What is an example of the conservation of angular momentum?
  10. The escape velocity at a given distance from a planet is less than the circular velocity of an orbit around that planet at the same distance.
  11. Special relativity states the relationship between energy and mass as E = m/c  .
  12. Mutual gravitation is ____.
  13. According to the DVD “Our Created Solar System,” there is evidence to suggest that the Moon is geologically active.
  14. According to Galileo, the acceleration of a freely falling object due to gravity is ____.
  15. The radius of Earth is 6,378 km. The force of gravity on a 1-kg ball at Earth’s surface is 9.8 kg m/s2.  What is the force of gravity on this same ball when the ball is located 12,756 km from Earth’s center? Hint: G = 6.67 × 10–11 m3/s2/kg
  16. Comets are composed of ____.
  17. Which statement best describes an extrasolar planet?
  18. Kuiper belt objects appear to be ancient planetesimals that formed in the outer Solar System but were never incorporated into a planet.
  19. The inner planets are composed of ____.
  20. The majority of known extrasolar planets are either hot Jupiters or hot __________.
  21. According to our class presentation, the theory that attempts to explain the origin of our Sun by purely natural means is
  22. What is the process in planetary formation in which heavy metals settle to the core of the planet while lower density materials floated to the surface to form a crust?
  23. According to our class presentation, the secular story of the universe is based on a specific series of events, each explained by its own theory.  Each subsequent event and theory are built on the previous event and theory.  To reflect the alleged sequence of events, secular scientists  would use this sequence of theories…
  24. From meteorite and lunar rock samples, astronomers have determined the age of the Solar System to be ____.
  25. The debris disk around the star Beta Pictoris is about _______ times the diameter of our Solar System.
  26. As a radioactive substance gradually decays, the abundance of daughter ____ gradually increases.
  27. Planetesimals beyond the orbit of _____ failed to accumulate into a protoplanet because the gravitational field of _____ continuously disturbed their motion.
  28. Which space observatory uses the transit method to detect extrasolar planets?
  29. Asteroids are the last of the icy planetesimals from the formation of the Solar System.
  30. Georges-Louis de Buffon was the first to propose that the Sun and planets formed when a large vortex contracted and condensed.
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