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






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






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






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






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






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






7. The study of the universe






8. Explained movement of planets with retrograde motion






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






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






11. A faint star of enormous density






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






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






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






15. 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






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






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






18. All of the frequencies or wavelengths of electromagnetic radiation






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






20. All of the frequencies or wavelengths of electromagnetic radiation






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






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






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






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






25. Radiation left over from the beginning of the universe






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






27. The spinning of Earth on its axis






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






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






30. Chunk of rock or dust in space






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

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






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






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






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






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






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






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






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






40. The small - dense remains of a high-mass star after a supernova






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






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






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






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






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






46. The brilliant explosion of a dying supergiant star






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






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






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






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







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Can you answer 50 questions in 15 minutes?


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