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. The location of a supermassive black hole






2. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






3. Mercury and venus






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






5. Approximate speed of light in a vacuum






6. The location around an atom where an electron resides.






7. The rotation of a star or planet at different speeds at its equator and poles






8. The law stating that hotter blackbodies look bluer than cooler blackbodies.


9. Jupiter






10. A method of finding a star's distance from its absolute magnitude and spectral type or color.






11. Elliptical orbits that come inside orbit of the Earth.






12. The imaginary sphere centered on the Earth that hols the stars.






13. What do we think the actual fate of the universe will be and why do we think this?






14. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






15. Centered on the sun.






16. The temp at which a substance in the vacuum of space solidifies






17. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






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






19. Then the Sun moves from north to south across the celestial equator (about September 23)






20. Electromagnetic Radiation






21. A star fusing hydrogen to helium in it's core






22. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






23. Mercury






24. Titan






25. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






26. 1 mm 1μm






27. Large nebula consisting of very cold gas and dust






28. A plot of star absolute magnitude verses spectral type.






29. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






30. A faint - remarkably uniform distribution of radiation in space






31. A phenomenon seen when the Earth passes through the orbit of a burned out comet






32. The apparent path of the Sun through the stars on the celestial sphere.






33. The light produced when particles from the sun collide with atmospheric molecules






34. Approximate speed of light in a vacuum






35. A measure of the force of gravity on an object






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






37. Mercury and venus






38. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






39. The part of the Milky way that has on-going star formation






40. A bright area of higher temperature that often proceeds the formation of sunspots.






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






42. When material is heated and moves taking the heat energy with it






43. A star that erratically and explosively brightens and dims






44. A collection of galaxies like the one the Milky Way belongs to






45. Collections of young - hot stars






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






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






48. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






49. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






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