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 planet that is farther from the sun than the Earth is






2. 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






3. When the Sun moves from south to north across the celestial equator (about March 21)






4. Is there water on the moon?






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






6. When a planet lines up with the sun inthe sky






7. Mercury and venus






8. Sc galaxies






9. The displacement of spectral lines to redder colors caused by the expansion of the universe.






10. A continuous spectrum of light missing energy at a few wave lengths.






11. IO






12. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






13. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






14. A telescope that uses lenses to focus light






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






16. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






17. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






18. The shadow area behind the Earth or Moon where the Sun is completely obscured.






19. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






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






21. A small chunk of rock in space






22. A planet orbiting about a distant star






23. Why do Galaxies move very rapidly in the interiors of the dense clusters?






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






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






26. Ganymede and Titan






27. Venus






28. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






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






30. Jupiter






31. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






32. The process that powers the sun and hydrogen bombs






33. The sinking of denser elements to the center of a young molten planet






34. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






35. A representation of the changes in color and brightness of an evolving protostar.






36. The telescope configuration that has the focus placed at the back of the primary mirror






37. A massive variable star used to find distances to the galaxies or clusters that contain them.






38. A telescope that uses mirrors to focus light






39. Jupiter






40. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






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






42. 1 mm 1μm






43. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






44. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






46. A force exerted by reflecting sunlight






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






48. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






49. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






50. The lens that gathers the light in a refractor