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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. Radiation left over from the beginning of the universe






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






3. Point of moon's orbit when it is nearest the earth






4. A graph relating the temperature and brightness of stars






5. Massive clouds of dust and gases where stars are born






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






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






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






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






10. A telescope that uses a curved mirror to collect and focus light






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






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






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






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






15. Point of moon's orbit when it is nearest the earth






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






17. Explained movement of planets with retrograde motion






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






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






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






21. The spinning of Earth on its axis






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

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23. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon






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






25. English mathematician and physicist - discovered the law of universal gravitation






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

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






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






29. A star that falls into the main sequence category on the H-are diagram






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






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






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






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






34. A graph relating the temperature and brightness of stars






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






36. Radiation left over from the beginning of the universe






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






38. The spinning of Earth on its axis






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






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






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






42. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)






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






44. Explained movement of planets with retrograde motion






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






46. The apparent westward motion of the planets with respect to the stars






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






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






49. 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






50. All of the frequencies or wavelengths of electromagnetic radiation







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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