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 small chunk of rock in space






2. Venus






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






4. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)






5. What do we think the actual fate of the universe will be and why do we think this?






6. The family of radiant energy that includes light as a subset






7. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






8. The family of radiant energy that includes light as a subset






9. How is the Hubble Law consistent with an expanding universe?






10. A planet orbiting about a distant star






11. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p

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12. The point in its orbit where a planet is nearest the sun






13. 1 mm 1μm






14. Mercury






15. A star that erratically and explosively brightens and dims






16. A star that blows itself apart






17. First accurately measured the speed of light in a vacuum






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






19. When the Sun is farthest south of the celestial equator (About December 22)






20. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






21. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






22. A spinning neutron star






23. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






24. The crust of a meteorite caused by its entry into Earth's atmosphere






25. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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26. 10 cm -> 1 mm






27. Centered on the Earth






28. What Ole Roemer used to measure the speed of light in a vacuum






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






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






31. Electromagnetic Radiation






32. A collection of galaxies like the one the Milky Way belongs to






33. The amount an image is enlarged by a telescope






34. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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35. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






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






37. 100 nm 10 nm






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






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






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

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41. That which is responsible for Jupiter's magnetic field






42. The process of acquiring material






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






44. The normal eastward movement of a planet against the background of hte distant stars.






45. The Greek philosopher responsible for making the stellar magnitude scale.






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

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






48. 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)






49. The rotation of a star or planet at different speeds at its equator and poles






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