Physical Science

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Across

3. when something is in movement
4. a measure of the force amplification achieved by using a tool, mechanical device or machine system
9. class of physical attributes that are mediated by magnetic fields
11. energy that comes from a source and travels through space at the speed of light
12. wave consisting of a periodic disturbance or vibration that takes place in the same direction as the advance of the wave
13. a simple machine that you use a screwdriver for
16. charge of a proton
21. the point of freezing
22. MA=F_/Fi
23. a region in a longitudinal (sound) wave where the particles are closest together
29. the electrical and magnetic forces or effects produced by an electric current
32. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element
35. a change in the direction of waves as they pass from one medium to another
37. the opposite of a balanced force
39. an electromotive force or potential difference expressed in volts
40. never changing
41. a measure of the amount of matter that an object contains
42. what does a clock tell you?
47. motion
48. a push or pull
50. _ liquid gas plasma
55. comprises a path along which the whole current flows through each component
57. subtract this from the atomic number and you get the neutrons
59. result for trough wave
64. the charge of a electron
68. the energy transferred to or from an object via the application of force along a displacement
69. the moving of something from its place or position
71. what are the things in the ocean that push to the beach on the surface
73. a simple machine containing a fulcrum
75. what you need to do work
76. the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density
78. the point of boiling
80. where is the protons and neutrons located
83. another word for heat energy
84. distance/time
86. the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced
89. relating to, composed of, or using ions
92. a body of water or air moving in a definite direction, especially through a surrounding body of water or air in which there is less movement
94. the rate of change of the velocity of an object with respect to time
95. the change in frequency of a wave in relation to an observer who is moving relative to the wave source
97. a wave that is not capable of transmitting its energy through a vacuum
98. motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance
100. method scientists use

Down

1. energy from the sun
2. makes up everything
4. attraction or repulsion that arises between electrically charged particles because of their motion
5. positive, negative, and neutral _
6. a numerical measurement of how far apart objects or points are
7. the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled
8. _'s laws
10. the structure of an atom comprising a nucleus
14. educated guess
15. a group of two or more atoms
17. the energy that is possessed by an object due to its motion or due to its position
18. solid _ gas plasma
19. what do you see in the mirror
20. how heavy something is
24. region at each end of a magnet where the external magnetic field is strongest
25. a simple machine with a sloping surface
26. substance made up of different elements joined together by a chemical bond
27. the transfer of thermal energy through the movement of a liquid or gas
28. solid liquid _ plasma
30. the resistance that one surface or object encounters when moving over another
31. What is a trough in a wave?
33. the opposite of an unbalanced force
34. negative charge
36. safety in the lab
38. energy that produces electricity
43. the rate of change of its position with respect to a frame of reference
44. the ability not to be affected by something, especially adversely
45. column of periodic table
46. solid liquid gas _
49. another word for group
51. a region within a magnetic material in which the magnetization is in a uniform direction
52. energy that produces light
53. positive charge
54. branches so that the current divides and only part of it flows through any branch
56. highest surface part of a wave is called the crest, and the lowest part is
58. the process by which sound waves travel through a medium
60. tools that make work more efficient
61. this tells you the amount of protons in an atom
62. the point of melting
63. a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials
65. MA=Fo/F_
66. another word for thermal energy
67. the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position
70. smallest unit of matter
72. length*width*height
74. the substances on a periodic table
77. a set of principles on which the practice of an activity is based
79. a minute portion of matter
81. a table with all of the elements
82. the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated
85. a covalently bonded set of two or more atoms
86. how dense an object is
87. neutral charge
88. point on a wave is the maximum value of upward displacement within a cycle
90. the number of occurrences of a repeating event per unit of time
91. a row of chemical elements
93. a dynamo or similar machine for converting mechanical energy into electricity
96. a wheel and axle but with a rope
97. small _ large
99. a simple machine that is like a door stopper