# 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
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
 Author: mackenzie ID: 52164 Card Set: science final Updated: 2010-11-29 16:55:55 Tags: science Folders: Description: flashcards for science final Show Answers: