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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. Collect Data (results) - Analyze the data to look for patterns or trends - Record measurements and observations during the experiment - Present data in a graph - table - or another form






2. The mechanical advantage of a wedge is given by the ______________________ - Although a short wedge with a wide angle may do a job faster - it requires more force than a long wedge with a narrow angle






3. 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






4. Temperature scale named after the German physicist Daniel Gabriel Fahrenheit (1686-1736) - who proposed it in 1724 - On this scale - the freezing point of water is 32






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






6. Metals account for the vast majority of the elements in the periodic table - Show a wide range of chemical and physical properties - Most metals are good conductors of heat and electricity - and some - like iron and cobalt - are magnetic - Many metal






7. A constant change in the location of a body - Described by stating an object's position - velocity and acceleration






8. Other indicators of the ________ of an acid are that when acids react with metals - hydrogen gas is released causing bases to feel soapy when touched






9. The north pole of one magnet attracts the ___________ of another - but like poles repel each other - Either pole can attract unmagnetized iron objects






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






11. Transferring of heat by emission and dissemination of waves or particles - Generated when heat from the movement of charged particles within atoms is converted to electromagnetic radiation - Electromagnetic radiation emitted from the surface of an ob






12. Relies on the the first law - The acceleration of an object is proportional to the force applied (the more force - the more acceleration)

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






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






15. Temperature scale -0






16. 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






17. Also generates a magnetic field - demonstrating an intimate connection between electricity and magnetism






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






19. Formed by the chemical combination of two or more elements in a fixed ratio Example: water






20. Major greenhouse gases






21. A conclusion is a summary and an explanation of the results of an experiment - Does the data support the hypothesis? If not - a new hypothesis can be formed






22. Multiply force but do not change the direction of the input force End: Fulcrum Middle: Output force Other end: Input force Examples: wheelbarrows - baby strollers - bottle openers






23. The resulting piece of paper or solution with water becomes a ________ (one of the oldest) - used to test materials for acidity






24. Designed to separate substances in a liquid through vaporization - Usually carried out in an apparatus called a still - which requires a boiler - a condenser - and a receiver Example: Purify ocean water






25. The number of waves produced in a given time






26. Elements with similar properties fall into the same vertical columns on the preriodic table to form _____ - Properties of elements change greatly across any one row (period)






27. Show the number of molecules or formula units of the reactants and products - Example: nitrous oxide is a colorless - odorless gas that causes mild hysteria when inhaled - hence the name laughing gas; it is prepared by heating ammonium nitrate crysta






28. This is the variable that changes as a result of the manipulated variable. The dependent variable is observed and measured. Examples include determining how long various saltwater solutions take to freeze - and determining the number of cycles a pend






29. 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






30. Arranges all of the known elements from left to right and top to bottom in order of increasing atomic number - and they generally coincide with their increasing atomic mass






31. Resistance to plastic (permanent) deformation due to a constant load from a sharp object






32. A flat surface whose endpoints are at different heights - resulting in a slope - By moving an object up an ___________ rather than completely vertically - the amount of force required is reduced - at the expense of increasing the distance the object






33. Explains why objects appear bent as light passes from one transparent object into another - Light travels at different speeds through different objects (faster through air than through water or glass) - Responsible for rainbows and for the splitting






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






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






36. Involve one substance changing states (not one substance changing into another) - Typically reversible Example: water - Can change from a gas (water vapor) to a liquid (water) to a solid (ice) - but the water molecules do not change






37. Energy can be neither created nor destroy






38. In each element's square - the ________ is in the middle - the atomic weight is usually directly below the symbol - the atomic number is usually shown at the top of the square






39. Symbol: He Protons: 2 Neutrons: 2 Mass: 4






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






41. Energy generated from natural sources (such as sunlight - wind - rain - tides - and geothermal heat) which are renewable (naturally replenished)






42. A change of one substance into a different substance - Occurs whenever compounds are formed or decomposed - During this reaction - there is a rearrangement of atoms that makes or breaks chemical bonds - This change is usually not reversible - unlike






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






44. These are the factors that are kept exactly the same in an experiment. In an experiment on plant growth - the variables could include amount of sunlight - type of soil - amount of water - and type of plant. Only one factor at a time is changed - whil






45. 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






46. Transition of heat through a medium - From a region of higher temperature to a region of lower temperature - Heat energy is transferred from one material to another by direct contact - Metals are good conductors of heat






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






48. Can multiply force or distance depending on the location of the fulcrum End: Output force Middle: Fulcrum Other end: Input force Examples: seesaws - scissors - pliers






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

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50. The terms gravitation and gravity are mostly interchangeable in everyday use - refers specifically to the gravitational force exerted by the earth on objects in its vicinity