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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. A faint star of enormous density






2. A faint star of enormous density






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






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






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






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






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






8. 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






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






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






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






12. 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






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






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






15. All of the frequencies or wavelengths of electromagnetic radiation






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






17. 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






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






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






20. The brightness of a star when viewed from Earth






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






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






23. 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






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






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






26. 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






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






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






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






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

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






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






33. The spinning of Earth on its axis






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






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






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






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






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






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






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






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






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






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






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






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






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






47. The rainbow effect when light is dispersed through lens






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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