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Astronomy Basics

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A rapidly spinning neutron star that produces radio waves






2. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface






3. A galaxy shaped like a flattened ball - containing only old stars






4. Every object in the universe was attracted to every other object w/ a force that is directly proportional to the masses and proportional to distance between them






5. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation






6. The apparent change in position of an object when seen from different places






7. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere






8. The increase in wavelength of light due to an object moving away from the observer






9. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases






10. Italian astronomer - mathematician - and physicist. His telescopes proved the sun is the center of the solar system and that the planets/moon move. He was persecuted for supporting Copernicus' ideas.






11. A spherical region of comets that surrounds the solar system






12. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth






13. Radiation left over from the beginning of the universe






14. The most distant point in the orbit of the moon






15. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun






16. The decrease in wavelength of light due to an object moving away from the oberver






17. An immense cloud of gas (mainly hydrogen) and dust in interstellar space






18. Every object in the universe was attracted to every other object w/ a force that is directly proportional to the masses and proportional to distance between them






19. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface






20. Radiation left over from the beginning of the universe






21. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy






22. The study of the spectra of stars by analyzing the spectral properties of the light they give off






23. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion






24. A shift toward the red end of the spectrum in the observed spectral lines of stars or galaxies showing objects are moving away and that the universe is expanding






25. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice






26. A contracting cloud of gas and dust with enough mass to form a star






27. A graph relating the temperature and brightness of stars






28. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources






29. A group of about 30 galaxies that includes the Milky Way






30. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field






31. The name of our galaxy - a spiral galaxy that contains about 400 billion stars






32. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece






33. Any substance that cannot be broken down into simpler substances






34. A star that expands and cools once it runs out of hydrogen fuel






35. The brilliant explosion of a dying supergiant star






36. All of the frequencies or wavelengths of electromagnetic radiation






37. A star that ejects some of its material in the form of a cloud and become more luminous in the process






38. A very small star with low temperature - reddish in color






39. The farther away a galaxy is - the faster it is moving away

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40. A large cloud of dust and gas that can break apart into smaller pieces and form stars






41. A system of galaxies containing from several to thousands of member galaxies






42. A faint star of enormous density






43. The decrease in wavelength of light due to an object moving away from the oberver






44. Chunk of rock or dust in space






45. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars






46. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern






47. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice






48. The rainbow effect when light is dispersed through lens






49. One of the small asteroid-like bodies that formed the building blocks of the planets






50. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular







Sorry!:) No result found.

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