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. Venus






2. A prominence seen against the disk of the sun






3. A telescope that uses mirrors to focus light






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






5. Centered on the sun.






6. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape






7. Orbit in Jupiters orbit






8. The first rock-sized bodies that formed in the solar nebula from dust grains






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






10. Mercury






11. Titan






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






13. The force of attraction between any two objects having mass






14. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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15. Long - meandering cliff formed when a planet surface cools and shrinks






16. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






17. Large nebula consisting of very cold gas and dust






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






19. The science of measuring light energy by wavelength.






20. All possible types of energy that can be emitted and absorbed by atoms.






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






22. Half of the longest diameter across an ellipse






23. 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.






24. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






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






26. 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.






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






28. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






29. The movement of the Earth's crustal plates riding on top of the mantle.






30. Venus (retrograde)






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






32. The material from which the solar system formed






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






34. A planet orbiting about a distant star






35. Moon in less than the angular diameter of the Sun.






36. Hot cells of gas that rise and fall in the hotosphere






37. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






38. The lens that gathers the light in a refractor






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






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






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






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






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






44. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






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 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






47. 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)






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






49. How did Earth come to have an oxygen rich atmosphere?






50. The layer of the sun just above the photosphere






Can you answer 50 questions in 15 minutes?



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