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. Is the study of the relationship between motion & the forces affecting motion.






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






3. Stored mechanical - Nuclear - Chemical - gravitational






4. The same pathogen must be found in every person with the same disease - the pathogen must be isolated & grown in a culture - when the organism is re - introduced in an experimental animal - that animal should develop the same disease originally seen

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


5. Static friction - Kinetic friction - Push & pull - rubbing - pull of gravity - forces on objects at rest - forces on a moving object - inertia & circular motion.






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






7. The theory that all matter is composed of particles (atoms and molecules) moving constantly in random directions






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






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






10. Causes motion






11. 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.






12. Change the chemical composition of a material - Computers can be made small enough to fit inside a plastic credit card - resistors are used to regulate volume on television or radio -






13. The monovalent group - OH in such compounds as bases and some acids and alcohols. Makes the molecule polar which increases the solubility of a compound.






14. A free element replaces an element that is a part of a compound. Ex. A +BX -> AX + B






15. Concave






16. Metal - nonmetals - & metalliods






17. Organic molecules that are composed of only carbon and hydrogen.






18. The branch of physics that deals with static electricity - study of stationary electric charges.






19. You see your reflection






20. Atoms with an equal # of protons and electrons.






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






22. It scatters light in many directions






23. Describes the force of friction of 2 surfaces in contact with eachother . When there is relative motion between the surface.






24. A carbon atom linked by a double bond to an oxygen atom. - c=o.






25. 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?






26. Is the change from liquid to gas.






27. That for a fixed amount of gas at a constant temperature - the volume of a gas increases as its pressure decreases






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






29. Temporary magnets that lose their magnetism when electric current is removed






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






31. Heat transferred by fluid current






32. 1/10 the base unit






33. Alkali metals






34. 1/1000 the base unit






35. Parts of 2 compounds replace each other. Ex. Switch partners AX + BY -> AY + BX






36. Electrons that can accept energy from outside sources and move farther away from the nucleus






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






38. Consists of frequency (f) - measured in hertz - and wavelength measured in meters - the frequency times the wavelength of every electromagnetic wave equals the speed of light.






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






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






41. 1. Constructive 2. Destructive






42. Average mass of various isotopes of the element.






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






44. Compounds that speed up chemical reactions. Sometimes without Catalysts reactions cant occur.






45. A temperature scale with the freezing point of water 32 degrees and the boiling point of 212 degrees.






46. Energy is added to a system one of two things must happen either thermal energy must increase or work must be done.






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






48. Higher because it has higher apparent frequency.






49. 1000x the base unit






50. Solids - gasses - and 1 liquid (Bromine)