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






2. Uses percent light absorbance to measure a color change - thus giving qualitative data using quantitative value - measures light intensity as a function of color - or more specifically - the wavelength of light.






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






4. Most directly involved with controlling levels of sugar in blood






5. Shiny - softer & less dense. Mostly chemically active






6. The total entropy of a system plus that of its surroundings always increase.






7. Solid has a definite shape and volume - Liquid has definite volume - but no shape - Gas has no shape of volume.






8. The agent most widely and most consistently at work changing the appearance of the Earth's surface






9. Atoms of the same element that have different numbers of neutrons






10. Heat energy that is transferred into or out of a system






11. Electronic equipment that provides visual images of varying electrical quantities - Useful in studying waves b/c it gives a picture of the wave.






12. Record vibrations in earth & allow us to measure earthquake activity.






13. F - branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions






14. 1. Liquid crystals - when certain solids melt their crystal lattices disintegrate & their particles lose their 3- dimensional pattern. 2. Solid - as a liquid substance cools & forms a solid. The strong attractive forces between oppositely charges ion






15. Rotate at very high speed in order to separate the liquids from the solids. The more dense part of the solution will sediment at the bottom of the test tube. while the lighter material will stay on top. Ex. centrifuge is used to separate blood from b






16. Inclined plane - lever - wheel & axle - pulley.






17. Metal - nonmetals - & metalliods






18. The amount of heat it takes to change a solid to a liquid






19. The interference that occurs when two waves combine to make a wave with a smaller amplitude






20. 1000x the base unit






21. Solutes that have bonds; no electrically charged species are created when they dissolve in water; glucose; lipids; urea






22. Measure of the disorder or randomness of the particles that make of a system (measurement of movement of particles in a spontaneous reaction) EX. entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity.






23. Average mass of various isotopes of the element.






24. Nuclear fission - Nuclear Fusion






25. A functional group consisting of a sulfur atom bonded to a hydrogen atom (






26. The energy released by a nuclear reaction - binding energy is released when the nuclei of atoms are split apart in a nuclear reaction this binding energy is called nuclear energy.






27. A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy






28. Negatively charged particles found outside the nucleus






29. Transfer of thermal energy with in a fluid. The particles in a fluid transfer the thermal energy from hot areas to cooler areas EX. the warmed up rising air from a heat source such as a fire or electric heater.






30. Friction opposes the motion of one surface past another - Friction is common when slowing down a car or sledding down a hill.






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






32. Do not have molecules with one of the two molecular arrangements required to give an odor






33. Heat absorbed or radiated during a change of phase at a constant temperature and pressure - the amount of heat required to undergo a phase change






34. Objects are in thermal contact if they can affect each others temperature






35. The Earth's seasons can be attributed primarily to which of the following in conjunction with its revolution about the Sun?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


36. Heat transferred by direct contact






37. It scatters light in many directions






38. Heat transferred by fluid current






39. Not as easy to recognize as metal bc they do not always share physical properties. They are dull - brittle - & not good conductors of heat






40. Way of keeping tract of valence electrons






41. 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.






42. 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?






43. Submarines - diving weighting system - naval architecture - Flotation - Buoyancy compensator






44. Is the work done divided by the amount of the time it took to do it. P= w/t






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






46. Atoms of the same element that have different numbers of neutrons






47. Stored mechanical - Nuclear - Chemical - gravitational






48. What are the # of protons in the nucleus of an atom called?






49. Is an atom that has all of its electrons in the lowest possible energy levels






50. A material such as glass or porcelain with negligible electrical or thermal conductivity. Electric charges do not move easily - if at all.