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






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






3. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






4. A galaxy emitting large amounts of energy at long wavelengths.






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






6. What are the three possible geometries of the universe?






7. 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






8. A point in the sky where meteors appear to come from during a shower






9. The mass of an object divided by its volume






10. A telescope that uses mirrors to focus light






11. The elementary building blocks from which protons and neutrons are formed.






12. Centered on the Earth






13. Mercury and venus






14. What is the universe expanding into?






15. The oldest part of the Milky Way






16. The distance a moon can be from a planet before shattering from tidal forces






17. When massive objects bend space and time enough to create multiple images of an object located behind them






18. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






19. Ganymede and Titan






20. The point directly overhead.






21. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






22. Jupiter






23. An element of a highly efficient - two-dimensional electronic light detector






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






25. A word meaning 'the same everywhere throughout.'






26. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






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






28. A star that erratically and explosively brightens and dims






29. Half of the longest diameter across an ellipse






30. The location in the Milky Way where stars orbit like a solid wheel






31. A small chunk of rock in space






32. Is there water on the moon?






33. Mercury






34. The science of measuring light energy by wavelength.






35. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






36. Jupiter






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






38. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.






39. A particle of light






40. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






41. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






43. A telescope that uses lenses to focus light






44. The oldest part of the Milky Way






45. A prominence seen against the disk of the sun






46. When the Moon entirely blocks the Sun.






47. 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.






48. A subatomic particle with a negative charge. It creates light.






49. The equation that describes how matter equates with energy






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