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. In what chemical form are jupiters nitrogen - carbon and oxygen?






2. When the Sun is farthest north of the celestial equator (about June 22)






3. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






4. Mercury






5. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






6. A very dense - highly populated cluster of galaxies






7. Centered on the sun.






8. Earth






9. A star that is in the process of forming. It glows from gravitational contraction






10. A measure of the ability of a telescope to see fine detail






11. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






12. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






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






14. The area behind a lens where images are resolved






15. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






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






17. An energetic event taking place in the early universe






18. Light scattered through the atmosphere that degrades astronomical images






19. The apparent backward motion of a planet against the background of stars.






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






21. The amount an image is enlarged by a telescope






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






23. The rock that makes up the lunar maria






24. A star without enough mass to begin hydrogen fusion






25. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






26. A high-pressure bulge in Neptune's southern hemisphere






27. Half of the longest diameter across an ellipse






28. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






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






30. A term referring to the orbital character of stars near the Sun






31. Ganymede






32. Approximate speed of light in a vacuum






33. A perfect absorber and radiator of electromagnetic radiation.






34. The point in its orbit where a planet is nearest the sun






35. Light scattered through the atmosphere that degrades astronomical images






36. 1 mm 1μm






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






38. The process similar to conduction by which energy moves from the solar core to the convective layer






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






40. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






41. The lens that gathers the light in a refractor






42. Is there water on the moon?






43. Large nebula consisting of very cold gas and dust






44. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






45. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






46. The act of removing an electron from an atom.






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






48. Infinitely long -> 10 cm






49. Poitns of gravitational stability in the orbit of a planet






50. Large nebula consisting of very cold gas and dust