science final

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mackenzie
ID:
52164
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science final
Updated:
2010-11-29 11:55:55
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science
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flashcards for science final
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  1. 9.8 m/s^2
    acceleration of gravity
  2. forces equal and opposite
    newtons 3rd law
  3. (change in velocity/change in time)
    acceleration
  4. protons plus neutrons
    mass
  5. (force) x (distance)
    work
  6. (work)/(time)
    power
  7. tendency for stationary objects to stay stationary, etc
    inertia
  8. (mass) x (velocity)
    momentum
  9. distance divided by time in a direction
    velocity
  10. D= (Ag x t^2) / 2
    free fall distance
  11. (mass) / (volume) =
    density
  12. mass x acceleration =
    force
  13. mass times height =
    potential energy
  14. 1/2 (mass) x (velocity)2
    kinetic energy
  15. absolute zero
    -273 degrees C
  16. heat transfer by fluids
    convection
  17. movement of heat
    thermodynamics
  18. level of disorder
    entropy
  19. heat to raise 1 g of water to 1 degree F
    calorie
  20. calories per gram x degrees c
    specific heat
  21. heat transfer by waves
    radiation
  22. heat transfer by touch
    conduction
  23. heat to raise 1 lb of water to 1 degree F
    BTU
  24. measure of hot and cold
    temperature
  25. film forming process
    calendaring process
  26. Die shaped liquid/melted plastics
    extrusion process
  27. injection molding
    melted TP pressured into molds
  28. air blown parts from melted TP
    blow molding process
  29. heat hardened plastics
    thermosetting polymers
  30. Tensile strength=
    pulling mode strength
  31. flexural strength=
    bending mode strength
  32. strength to resist pressing mode=
    compression strength
  33. liquid thickness (resisting flow)
    viscocity
  34. sag under pressure/room temp is known as:
    creep
  35. TP softening/ flow temperature is called:
    melting range
  36. crack resistance-
    impact strength
  37. resistence to gas through plastic
    permeability
  38. sagging under heat and pressure=
    heat distortion temp
  39. ability to stretch-
    % elongation
  40. bottles and milk containers=
    PVC (polyvinylchloride)
  41. pipe foam insulation, toys
    PS, polystyrene
  42. foam insulation and cups
    LDPE, Low Density Polyethylene
  43. Pipe and glass replacement is made up of:
    High Density Polyethylene, or HDPE
  44. Pipe and Siding is made up of:
    Polypropylene, PP
  45. coke, water bottles, clothing-
    PETE, Polyethylene Terephthalate
  46. balanced forces on object
    equilibrium
  47. what is the shape of planetary orbitals around our sun?
    elipse, eliptical
  48. The planet where you would weigh the less=
    pluto, also mercury
  49. the orbit of each planet is an ellipse and the sun is at one focus, what law is this?
    Keplars 1st law
  50. When does the kinetic energy of planetary orbital equal the potential energy? when is ke=pe?
    when earth is half way back towards the sun
  51. a collapsed star, gravitational pull, huge mass, huge gravity
    Black Hole
  52. Which waves are hazardous, short waves or long waves?
    short waves
  53. the speed at which a planet orbits around another mass
    orbital velocity
  54. what is the nearest matching planet in mass vs earth?
    venus, escape velocity = 10.4km/s
  55. orbital velocity quanity for earth?
    9.0 km/s
  56. escape velocity for earth?
    11.2 km/s
  57. on which planet would you weigh the most?
    jupiter
  58. what are four properties of light?
    reflection, refraction, transmission, absorption
  59. range of visible human vision?
    400-800 nm

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