Study Guide Flash Cards

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  1. An elliptical galaxy
    contains few young stars, has little dust and gas, and is elongated.
  2. Energy produced in the sun's core is the result of 
    nuclear fusion
  3. Astronomers believe that cosmic background radiation formed
    shortly after the big bang.
  4. When early Earth's atmosphere formed, which of the following gases were lost because Earth's gravity was too weak?
    helium and hydrogen
  5. What can parallax be used to calculate?
    the distance to stars that are extremely far away.
  6. Compared with those of Saturn, the rings of Neptune are
    small in number and clumpy.
  7. Planets that circle stars other than Earth's sun are called
  8. Which of the following planets experiences a runaway greenhouse effect?
  9. Stars appear to move in the sky because
    Earth is moving
  10. The big bang occured about
    14 billion years ago
  11. Meteors are often called
    shooting stars
  12. Mar's volcanoes are larger than those of Earth because Mars
    has no moving tectonic plates.
  13. In the sun's radiative zone, energy moves
    by radiation
  14. Differentiation is the process that formed
    the layers of the moon's interior
  15. What is important about Hubble's discovery that there is a red shift in the spectra of galaxies?
    it suggests that the universe is expanding
  16. The right combination of temperature, water, oxygen
    supports life on Earth
  17. What happens when the shadow of one celestial body falls on another celestial body?
    an eclipse
  18. What type of galaxy is the Milky Way?
  19. Einstein's equation E=mc2 helps scientists understand the sun;s energy because the equation
    explains how mass can be converted into huge amounts of energy
  20. Where is the Kuiper Belt located?
    beyond Neptune's orbit.
  21. Small bodies from which planets originated during the early formation of the solar system are called
  22. Which telescope detects invisible electromagnetic radiation?
    radio telescope
  23. Which of the following are part of the sun's atmosphere?
    photosphere and chromosphere
  24. What makes up most of the universe?
    dark energy and dark matter
  25. The Huygens probe landed on which moon in 2005?
  26. During the main sequence stage, how is energy generated in a star's core?
    hydrogen fuses into helium
  27. A constellation's changing position in the sky, at the same time of the evening, over a period of several weeks is evidence that
    Earth revolves around the sun
  28. What is a galaxy?
    stars, dust, and gas bound together by gravity
  29. The universe began about
    14 billion years ago
  30. In which stage of the moon's formation did parts of Earth's mantle join together as they revolved around Earth?
    the first stage
  31. Telescopes have been sent to space because ground-based telescopes
    experience interferences from Earth's atmosphere.
  32. A benefit that 20th and 21st century space programs have brought to an area outside of astronomy is
    improved heart pumps
  33. Scientists break up the sun's light into a spectrum using a device called a
  34. Auroras form when charged particles from solar wind
    react with particles in Earth's atmosphere
  35. What is the hottest layer of the sun's atmosphere called?
  36. What effect does the elliptical orbit of the moon around Earth have?
    the distance between Earth and the moon varies over a month's time
  37. A rapidly spinning neutron star that emits burst of radio and optical energy is a
  38. light year equals
    9.4607 x 1012
  39. Our current calendar is most like that of the ancient
  40. The majority of Jupiter is made up of
    hydrogen and helium
  41. What are binary stars
    pairs of revolving stars held together by gravity.
  42. The Coriolis effect provides evidence that 
    Earth rotates on its axis
  43. What color are the coolest stars?
  44. What is a prominence on the sun?
    a disturbance in the sun's atmosphere; an arched, glowing cloud of gas
  45. The event which began the universe was the
    big bang
  46. Invisible electromagnetic radiation was discovered with a
  47. During fusion, a type of subatomic particle is given off called a
  48. The law that describes how a planet orbits the sun is called the
    law of ellipses
  49. The least dense planet in the solar system is
  50. Circumpolar stars in the Northern Hmisphere appear to circle
Card Set:
Study Guide Flash Cards
2014-05-19 14:35:10
Comers class

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