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 fusion process that turns three helium nuclei into a carbon nucleus






2. A term referring to Earth-like planets






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






4. 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.






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






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






7. The lens that gathers the light in a refractor






8. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






9. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






10. The entity responsible for spiral arms in grand-design spiral galaxies






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






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






13. A small chunk of rock in space






14. 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






15. The process responsible for creating the arms of flocculent spiral galaxies






16. Light-colored high-pressure bands in Jupiter's atmosphere






17. Venus






18. 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






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






20. The oldest terrain on the moon






21. The oldest part of the Milky Way






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






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






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






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






26. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






27. The material from which the solar system formed






28. The fusion process that turns three helium nuclei into a carbon nucleus






29. Ganymede and Titan






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






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






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






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






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






35. When particles are compressed to an unnatural state where their pressure is not related to their temperature






36. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






37. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






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






39. A star that blows itself apart






40. The measure of a variable star's apparent magnitude as it brightens and dims with time






41. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






42. A spectrum of light with energy at only a few wavelengths.






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






44. A word meaning 'the same in all directions.'






45. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






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






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






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






49. The rock that makes up the lunar highlands






50. A prominence seen against the disk of the sun