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. Mercury and venus






2. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






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






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






5. 10^2 nm 10^7 nm






6. The powdered stone fragments that make up the lunar 'soil'






7. VENUS






8. Very center of galaxy. suggestion of a black hole






9. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






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






11. 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






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






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






14. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






15. Ganymede and Titan






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






17. The location around an atom where an electron resides.






18. The oldest part of the Milky Way






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






20. When one side of a body always faces the planet it revolves around






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






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






23. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






24. The material from which the solar system formed






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






26. Saturn






27. 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.






28. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






29. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






30. A long-lived high-pressure bulge in Jupiter's southern hemisphere






31. The law that predicts the possible types of spectra.


32. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






33. The process of acquiring material






34. Large nebula consisting of very cold gas and dust






35. The shadow behind the Earth or Moon where the Sun is partially obscured.






36. A measure of the force of gravity on an object






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






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






39. All wavelengths of light emitted by a blackbody.






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






41. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






42. The law that describes the blackbody curve - and let to quantum mechanics.


43. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






44. The law stating that hotter blackbodies look bluer than cooler blackbodies.


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






46. A small and dim but hot star.






47. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






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






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






50. The apparent path of the Sun through the stars on the celestial sphere.