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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. All of the frequencies or wavelengths of electromagnetic radiation






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






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






5. A group of stars that form a pattern in the sky






6. 23.5° - the reason we have seasons

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






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






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






10. A faint star of enormous density






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






12. 23.5° - the reason we have seasons

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13. Change in the apparent frequency of a wave as observer and source move toward or away from each other






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






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






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






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






18. The rainbow effect when light is dispersed through lens






19. When the moon passes between earth and the sun - blocking the sunlight from reaching earth






20. A group of stars that form a pattern in the sky






21. All of the frequencies or wavelengths of electromagnetic radiation






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






23. Explained movement of planets with retrograde motion






24. A model of the solar system in which Earth and the other planets revolve around the sun






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






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






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






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






29. Chunk of rock or dust in space






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






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






32. The spinning of Earth on its axis






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






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






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






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






37. 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






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






39. The brilliant explosion of a dying supergiant star






40. A graph relating the temperature and brightness of stars






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






42. 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






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






44. 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






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






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






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






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






49. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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