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






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






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






4. The brilliant explosion of a dying supergiant star






5. The spinning of Earth on its axis






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






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






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






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






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






11. A shift toward the red end of the spectrum in the observed spectral lines of stars or galaxies showing objects are moving away and that the universe is expanding






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






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






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






15. Radiation left over from the beginning of the universe






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






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






18. A faint star of enormous density






19. The study of the universe






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






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






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






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






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






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






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






27. A rapidly spinning neutron star that produces radio waves






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






29. 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






30. A large body in space that orbits a star and does not produce light of its own






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






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






33. 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






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






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






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






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






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






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






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






41. 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






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






43. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars






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






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






46. A star that ejects some of its material in the form of a cloud and become more luminous in the process






47. 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






48. A rapidly spinning neutron star that produces radio waves






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






50. A graph relating the temperature and brightness of stars







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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