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






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






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






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






5. The brilliant explosion of a dying supergiant star






6. 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






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






8. Chunk of rock or dust in space






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






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






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






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






13. Chunk of rock or dust in space






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

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






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






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






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






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






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






21. All of the frequencies or wavelengths of electromagnetic radiation






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






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






24. 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.






25. Explained movement of planets with retrograde motion






26. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.

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27. 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






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






29. Radiation left over from the beginning of the universe






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






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






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






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






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






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






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






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






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






39. 23.5° - the reason we have seasons

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






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






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






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






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






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






46. The brilliant explosion of a dying supergiant star






47. The elliptical motion of a body as it orbits another body in space






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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