Test your basic knowledge |

Praxis General Science

Subjects : praxis, 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. Potential & Kinetic






2. Removal of static electricity by conduction






3. Alkaline earth metals






4. A compound of which a relatively small amount of the dissolved solute exists as ions in an aqueous solution. Example: Acetic acid - CH3COOH (vinegar)






5. An electric circut with a single path






6. All processes cease when temperature approaches 0.






7. 1.) Protons 2.) Neutrons - They both have the same mass - but neutrons have no mass.






8. Harder - denser - have higher melting points & are chemically active.






9. Experiments may not be done on...






10. Alkali Metals are the most _____________






11. Causes motion






12. Finding that a solution conducts an electric current shows conclusively that the solution...






13. The transfer of heat by electromagnetic waves is called?






14. A piece of paper that appears blue in sunlight is illuminated solely by a red light that is passed through a green filter. What color does the paper appear under this illumination?






15. The state of two or more objects or substances in thermal contact when they have reached a common temperature - EX. the affects after a hot cup of coffee meeting the desk temperature.






16. Substance that dissociates completely into its ions when added to water and conducts electricity well.






17. A principle that states that for every action there is an equal reaction in the opposite direction


18. The object is further than one focal length from the lens






19. The process of heat transfer via solid contact






20. Specific gravity is the ratio based on...






21. The centripetal force is provided by the high banking of the curved road & by friction between the wheels & the road.






22. 1. Make more coils - 2. put an iron cover (nail) inside the coils - use more battery power






23. (physics) the capacity of a physical system to do work - or supply heat.






24. Stored mechanical - Nuclear - Chemical - gravitational






25. Reflects the light in one direction






26. They are neither precise nor accurate.






27. Change in the apparent frequency of a wave as observer and source move toward or away from each other






28. 1. All are solids having the appearance of metals & non - metals. 2. All are white or gray - but not shiny 3. Conduct electricity - but not as well as metals.






29. 2 or more substances combine to form a compound EX. A+B -> AB






30. The region around a magnet where the magnetic force is exerted






31. Are used in the treatment of cancer b/c they can kill cancer cells. However - if powerful enough they can kill healthy cells.






32. # of electrons. Non - metals have 4-8 electrons in their outermost energy.






33. The number of electrons per second that flow past a point in a circut.






34. Reduction in pressure of a fluid resulting from the speed increase as fluids are forced to flow faster through narrow spaces






35. Small uncharged particles in the nucleus they are neutral






36. Is done on an object when an applied force moves across a distance.






37. Symmetry - crystalline structures are universal - Crystallographic defects - Electrical properties - crystal system






38. A buret is used to deliver solution in precisely - measured - variable volumes. deliver one reactant until the precise end point of the reaction is reached.






39. Metric unit for measuring temperature; On this scale water freezes at zero and boils at 100.






40. The relationship between voltage - current - and resistance - V=IR






41. The difference in electrical charge between two points in a circuit expressed in volt. When an electron goes through a load it does work & loses some energy.






42. Uses electrical charges of molecules to separate them according to their size the molecules such as DNA or proteins - are pulled through a gel towards either the positive end of the gel box.






43. Relates pressure & temp. and temp and volume.






44. A circut with two or more resistors where the electricity has more than one path to travel






45. Pushing a vacuum cleaner or pulling a bowstring applies muscular force when the muscles expand & contract elastic force occurs when an object returns to its original shape (for example - when a bow is released)






46. Animals in which of the following groups may have a backbone and a spinal cord?






47. Electrical - Light (radiant) - Heat (thermal) - Movement






48. Mass of the substance contained per unit of volume






49. (physics and chemistry) the smallest component of an element having the chemical properties of the element






50. Two or more simple machines working together EX. wheelbarrow it uses level - wheel & axle.