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CSET Physical Science 3

Subjects : cset, 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 gas - discharge lamp that uses electricity to excite mercury vapor - The excited mercury atoms produce short - wave ultraviolet light that then causes a phosphor to fluoresce - producing visible light






2. The pitch of a sound depends on how fast the particles of a medium vibrate






3. As temperature increases (at a fixed pressure) - so does volume Examples: air - helium - steam


4. Energy can be neither created nor destroy






5. However - a fluorescent lamp converts electrical power into useful light more __________ than an incandescent lamp; lower energy costs offset the higher initial cost of the lamp






6. When the electrons flow in one direction - the flowing electricity is referred to as current - An electric current is simply a flow of electrons through a wire






7. The top of a wave's 'hill'






8. The number of protons of that element - No two elements have the same atomic number - Elements in the periodic table are arranged in order of increasing atomic number






9. A mechanical device that changes the direction or magnitude of a force - The simplest mechanisms that use mechanical advantage to multiply force - Uses a single applied force to do work against a single load force






10. The characteristics that makes up the physical composition of a substance - Include color - form - electrical conductivity - and density






11. The burning of coal also contributes to the formation of...






12. The rate of change of velocity with time a = ?v/?t (acceleration = change of velocity/change of time)






13. The rate of change of position with time v = ?d/?t (velocity = change of distance/change of time)






14. Symbol: H Protons: 1 Neutrons: 0 Mass: 1






15. The ratio of the output to the input force - Also called leverage - Results in less force applied over a greater distance - Helps to make work easier






16. State the specific plan on how to test the hypothesis - Create a written - step - by - step procedure - Determine the variables (any factor that can change in an experiment)






17. The law of inertia - Without outside forces (such as gravity or friction) - an object at rest will remain at rest - while an object in motion will never stop or deviate from its course


18. List the specific materials to be used in the experiment - This allows for replication of the experiment






19. Energy taken from finite resources that will eventually dwindle - becoming too expensive or too environmentally damaging to retrieve - Fossil fuels include coal - petroleum - and natural gas - Fossil fuels are limited and nonrenewable and contribute






20. Solids - liquids - and gases






21. Anything that has mass and occupies space - Everything you see and touch is composed of matter






22. Some gases can transition directly to a solid Example: the formation of frost






23. Known as insulators - In materials that act as insulators - the electrons are held tightly inside their atoms and the electrons cannot move freely - Include plastic - rubber - glass - air - and wood






24. A measure of the acidity or basicity of a solution - The ____ scale is not an absolute scale; it is relative to a set of standard solutions whose pH is established by international agreement - these measurements are important for medicine - biology -






25. Elements are assigned atomic numbers equal to the __________ in the nucleus of their atoms - Each element has a different number of protons






26. Turns red under acidic conditions - and turns blue under basic (i.e. - alkaline) conditions






27. Unlike incandescent lamps - fluorescent lamps always require a ______ to regulate the flow of power through the lamp






28. A hypothesis is an attempt to answer the question or predict the outcome - - A hypothesis is a possible explanation for a set of observations






29. A rigid object that is used with an appropriate fulcrum or pivot point to multiply the mechanical force that can be applied to another object - Examples: wheelbarrow (the wheel works as the fulcrum) - scissors (the fulcrum is where the blades cross)






30. Composed of only one atom and cannot be separated into different substances except in some instances by radioactive decay or by nuclear reactions






31. A form of energy that can be used to produce sound - light - heat - and power - it exists where the number of negative electrons does not precisely equal the number of positive protons - Electrons are held in the atom by an electrical force and have






32. The portion of the light that crosses the boundary is - however - deflected in another direction - and the ______ does not equal the angle of incidence






33. Height of the bounce of an object dropped o the material - related to elasticity






34. The branches of natural sciences that study the nature and properties of energy and non - living matter






35. A compound composed of one atom of sodium and one atom of chlorine (NaCl - sodium chloride)






36. Characterized by their ability to retain their shape - Relatively incompressible - Melt when heated and vaporize only slightly - All substances become solid if cooled sufficiently Examples: rocks - crystals - wood - feather - ice






37. This is the one factor that will be intentionally changed during the experiment. Examples include changing the amount of salt that is added to water to determine its freezing point; introducing different soil types in germinating seeds; and changing






38. Form a question (state the problem) - A scientific question is one that can be answered on the basis of evidence and that can be measured - The question often asks - 'What effect will something have






39. Heat tends to move from a high - temperature region to a low- temperature region - This heat transfer may occur by the mechanisms of conduction - radiation - and convection






40. Heat can be converted to motion - and motion can produce heat






41. Results when electrical charges buildup or increase on the surface of a material - here - there is no current flowing as would be found in electrical outlets - When certain materials are rubbed together - electrons can move from one object to the oth






42. A wave's height - the distance between its resting position and its crest






43. Major greenhouse gases






44. Opposite process of nuclear fission - Yields energy when very light nuclei unite to a heavier nucleus - Stars (including the sun) derive their energy from nuclear fusion






45. Salt has a ___________ than water and therefore doesn't evaporate with the water






46. Expand to fill any available space - a compressible fluid - with its volume determined by the pressure and temperature of the environment






47. The sum of the protons and neutrons gives an ______________ for the element






48. After a rainstorm - the air is full of tiny drops of water - Each drop acts as a prism - splitting the light into the colors of the spectrum






49. In everyday situations - the weight of an object is ____________ - which usually makes it acceptable to use the same word for both concepts






50. Temperature scale -0