Test your basic knowledge |

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






2. All of the frequencies or wavelengths of electromagnetic radiation






3. A rapidly spinning neutron star that produces radio waves






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






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






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






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






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






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






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






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






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






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






14. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone






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






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






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






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






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






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






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






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






23. Chunk of rock or dust in space






24. Radiation left over from the beginning of the universe






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






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






27. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)






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






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






30. Radiation left over from the beginning of the universe






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






32. A faint star of enormous density






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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






38. 23.5° - the reason we have seasons

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


39. 23.5° - the reason we have seasons

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


44. The brightness of a star when viewed from Earth






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






46. The brilliant explosion of a dying supergiant star






47. A faint star of enormous density






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






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






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