Test your basic knowledge |

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. 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






2. Spectrum of electromagnetic radiation emitted by a self-luminous source






3. The average distance between the Earth and the sun - or approximately 150000000 km






4. Light distance travels in one year (9.5 trillion km)






5. An enormously bright - distant galaxy with a giant black hole at its center






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


8. An elongated circle - or oval shape - the shape of the planets orbit






9. The luminous cloud of particles surrounding the frozen nucleus of a comet






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






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






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






13. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone






14. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years






15. A measure of the amount of light that a star actually emits






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


18. An enormously bright - distant galaxy with a giant black hole at its center






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






20. Point in orbit that is closest to the sun - planet moves faster






21. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune






22. The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature






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






24. A faint star of enormous density






25. The two days of the year on which neither hemisphere is tilted toward or away from the sun






26. An extremely bright star of very large diameter and low density






27. A spectrum of light in which there are no gaps - so that each region blends directly into the next






28. Galaxy with no particular shape - contains new & old stars






29. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone






30. Varying amounts of the lighted moon as seen from earth






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






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






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






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






35. A system of two stars that revolve around each other under their mutual gravitation






36. The study of the universe






37. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths






38. The place in the orbit of a planet where the planet is farthest from the sun






39. An elongated circle - or oval shape - the shape of the planets orbit






40. The distance between crests of waves - such as those of the electromagnetic spectrum






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






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






43. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)






44. 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.






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






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






47. Space object made of dust and rock particles mixed with frozen water - methane - and ammonia that forms a bright coma as it approaches the Sun






48. The study of the universe






49. Galaxy with no particular shape - contains new & old stars






50. The spinning of Earth on its axis