Test your basic knowledge |

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 term referring to the orbital character of stars near the Sun






2. The entity from which the whole universe is postulated to have come from.






3. The average distance between the Earth and the Sun (=1.5 x10^8km)






4. The force of attraction between any two objects having mass






5. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas






6. That which is responsible for Jupiter's magnetic field






7. The rock that makes up the lunar maria






8. An evolved star - past the helium flash that is burning helium to carbon in it's cores






9. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






10. The location of a supermassive black hole






11. A telescope that uses mirrors to focus light






12. Venus






13. The gap etween saturn's A and B rings






14. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






15. The oldest terrain on the moon






16. The Greek philosopher responsible for making the stellar magnitude scale.






17. Why does the earth have few craters while the moon has many?






18. A bridge of material held in position above the solar surface. They can remain for hours even days






19. Possible Fates of the Universe






20. A small round distribution of gas surrounding a dying star






21. An important quality of telescopes that increases as the square of the primary mirror or objective lens






22. The high- temperatature outer layer of the sun






23. The mix of pure photon energy that emerged at the start of the universe.






24. Saturn






25. The organization of clusters of galaxies into sheets and strings






26. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






27. The seasonal shifting of a nearby star's position relative to more distant objects.






28. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






29. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






30. Any change in the speed or direction of an object's motion






31. Clouds of low density gas often found glowing faintly on either side of an AGN.






32. Matter so dense that even light cannot escape its gravity






33. A location on an H-are Diagram where evolving stars pulsate






34. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






35. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






36. The projection of the Earth's equator onto the celestial sphere.






37. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






38. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






39. A quantity measuring the stability of the Earth's atmosphere






40. How did Earth come to have an oxygen rich atmosphere?






41. Collections of young - hot stars






42. 10 nm 10^2 nm






43. The slow wobble of the Earth on its rotation axis.






44. Ganymede and Titan






45. The oldest grouping of stars - found in the galaxy halo






46. Matter that reveals itself only through its gravitational attraction.






47. All wavelengths of light emitted by a blackbody.






48. A younger cluster of stars - found in the galaxy disk






49. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






50. A spinning neutron star