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Q 1/129
Score 0
Military, Profit, Discovery
30
Why is Undersea Technology necessary?
Q 2/129
Score 0
A large, bell-shaped submersible lowered from a ship in order to explore or to work on the sea bottom. Replenishing air in the diving bell was one of the most difficult problems in using this device.
30
Diving Bell
129 questions
Q.
Military, Profit, Discovery
1
30 sec
Q.
A large, bell-shaped submersible lowered from a ship in order to explore or to work on the sea bottom. Replenishing air in the diving bell was one of the most difficult problems in using this device.
2
30 sec
Q.
An aqualung in which the diver's exhaled breath is partially purified of carbon dioxide, mixed with more oxygen, and then breathed again by the diver. Very Dangerous to use. "Closed Circuit". Great for Military
Large underwater vessels independently operated for military, research, and tourism
6
30 sec
Q.
Self Propelled Torpedos
7
30 sec
Q.
Operated by human pilot and connected via tether/umbilical tether.
8
30 sec
Q.
Oceanogrpahy, Pharmacology, Microbiology, Fisheries and Marine Biology, Archaeology, recreation, and education.
9
30 sec
Q.
Tethered free-swimming, Tethered bottom-crawling, Tethered Structurally reliant, Tethered Tow sled
10
30 sec
Q.
Heavy work class (10,000lbs +)
11
30 sec
Q.
Operated without a human pilot.
12
30 sec
Q.
Power Distribution Unit
13
30 sec
Q.
Power source for the ROV and LARs
14
30 sec
Q.
Houses the electrical unit that powers the ROV.
15
30 sec
Q.
Minimum of three people.
16
30 sec
Q.
Deck Cable
17
30 sec
Q.
Umbilical cable
18
30 sec
Q.
Tether cable
19
30 sec
Q.
System used to launch and recover the ROV.
20
30 sec
Q.
System that manages the tether, by coiling it on a spool.
21
30 sec
Q.
Keep eye on mission
22
30 sec
Q.
procedures for defining, planning, designing, building, testing, implementing, and documenting the ROV system.
23
30 sec
Q.
collection of interrelated parts or subsystems unified by design to obtain one or more objectives
24
30 sec
Q.
System within another system
25
30 sec
Q.
System composed of other systems
26
30 sec
Q.
a property of a system that emerges from the interaction of the elements of the system.
27
30 sec
Q.
Concentration of salts in water
28
30 sec
Q.
Ease of electricity flow through metal.
29
30 sec
Q.
Electrochemical process that disintegrates metal.
30
30 sec
Q.
Attenuation=Decrease in strength
31
30 sec
Q.
Measures Magnitude/Strength and direction of push and pull.
32
30 sec
Q.
Force of gravity on Earth
33
30 sec
Q.
Measures amount of matter/Substance in a material
34
30 sec
Q.
Force of attraction between objects
35
30 sec
Q.
Mass/Volume
36
30 sec
Q.
X= Density of X/Density of Freshwater
37
30 sec
Q.
Pressure= Force/area
38
30 sec
Q.
1 Atm, this increases by 1 atm per 10m depth.
39
30 sec
Q.
upward force exerted by fluid on an object immersed in the fluid.
40
30 sec
Q.
Extent to which an object shrinks in volume when exposed to outside pressing forces
41
30 sec
Q.
Thickness of a liquid or gas
42
30 sec
Q.
resistance to movement caused by a fluid
43
30 sec
Q.
due to difficulty of pushing fluid out of the way.
44
30 sec
Q.
Due to friction along side of object moving through fluid
45
30 sec
Q.
Propagatoin of vibration through matter
46
30 sec
Q.
study of sound
47
30 sec
Q.
study of sound in water
48
30 sec
Q.
the decrease in light intensity due to absorption of light energy by water molecules red absorbed most quickly, followed by orange, yellow, green, blue and violet
49
30 sec
Q.
How cloudy or murky water is.
50
30 sec
Q.
Depth at which visibility disappears, in the shade, at noon.
51
30 sec
Q.
reflected light from particles in water, reduces video/photo quality
52
30 sec
Q.
reduction in light intensity as it passes through water due to absorption and and turbidity
53
30 sec
Q.
bending of light waves as light passes from one material to another.
54
30 sec
Q.
Index of speed of light through a material
55
30 sec
Q.
ability to absorb heat
56
30 sec
Q.
Steady flow of water
57
30 sec
Q.
small rotating current
58
30 sec
Q.
Large rotating current in mid ocean
59
30 sec
Q.
Current moving away from shoreline
60
30 sec
Q.
More turbid water is denser, which can cause sinking currents
61
30 sec
Q.
current near strong river mouths, bays, and estuaries
62
30 sec
Q.
Changes in height of the ocean surface due to gravitational pull of moon/sun
63
30 sec
Q.
Large ripples in the water caused by wind
64
30 sec
Q.
Low height waves in deep water
65
30 sec
Q.
breaking waves in very shallow water
66
30 sec
Q.
Plant animal life growing on outer surface of ROV
67
30 sec
Q.
ROV becomes entangled in sea grasses, or fishing nets
68
30 sec
Q.
Column of water from surface to bottom at a particular location and time
69
30 sec
Q.
surface zone where light penetrates and photosynthesis can occur
70
30 sec
Q.
deep zone where no light penetrates
71
30 sec
Q.
threshold layer of water between warm surface water and cold deep water
72
30 sec
Q.
Highest density at surface where sun and wind evaporate water.
73
30 sec
Q.
Graph that shows how salinity changes with depths
74
30 sec
Q.
Threshold layer of water where salinity changes rapidly
75
30 sec
Q.
A threshold layer of water where water density changes rapidly.
76
30 sec
Q.
particles of dead plankton and animals and animal waste that sink to the bottom.
77
30 sec
Q.
provide physical support and attachment points for other parts of ROV
78
30 sec
Q.
Strength, Ease of assembly, Ease of alterations, Ease of Maintenance, Stiffness
79
30 sec
Q.
to manage the mechanical forces affecting the ROV
80
30 sec
Q.
Frame- Skeleton
81
30 sec
Q.
Must support and protect the RO, while withstanding hydrodynamic forces.
82
30 sec
Q.
Must resist crushing by water pressure, leaking.
83
30 sec
Q.
Maximum force that can be withstood before bending/deforming.
84
30 sec
Q.
Measured in units of force required to break the part
85
30 sec
Q.
Measured in units of force per area before breaking
86
30 sec
Q.
Measured in units of force required to bend the part
87
30 sec
Q.
Measured force per area
88
30 sec
Q.
once bent, stay bent
89
30 sec
Q.
Once bent, bounce back to original state
90
30 sec
Q.
Force per area
91
30 sec
Q.
the result of stress= fractional change in shape
92
30 sec
Q.
Ratio between strength provided and strength required
93
30 sec
Q.
Most common structural material
94
30 sec
Q.
composed of one element
95
30 sec
Q.
less stiff/strong compared to steel, corrodes slower than steel, cheap, soft and easy to drill.
96
30 sec
Q.
plastic resins that can be heated, poured, and molded.
97
30 sec
Q.
different metals in electrical contact underwater will react.
98
30 sec
Q.
An external electric voltage accelerates the corrosion of metals.
99
30 sec
Q.
Use only galvanic compatible metals
100
30 sec
Q.
attach a less electronegative metal to the anode
101
30 sec
Q.
the single greatest physical threat to ROVs
102
30 sec
Q.
virtual sense of being there
103
30 sec
Q.
an illness associated with scuba diving in which nitrogen becomes dissolved in solution as a result of greater than normal atmospheric pressure, also known as rapture of the deep.
104
30 sec
Q.
A type of diving in which the diver remains at depth for prolonged periods.
105
30 sec
Q.
anything that attempts to squash a liquid or a gas into a confined volume
106
30 sec
Q.
Atmospheric pressure = 14.7 PSI
107
30 sec
Q.
surrounding pressure
108
30 sec
Q.
Difference between pressure areas.
109
30 sec
Q.
to clear ears underwater
110
30 sec
Q.
An instrument that measures atmospheric pressure
111
30 sec
Q.
alternative metric unit for measuring fluid pressure. Defined as 100,000 Pa.
112
30 sec
Q.
Often found in barometric thermometers
113
30 sec
Q.
U-shaped tubes partially filled with a liquid that are connected to the gas sample on one side and open to the air on the other
114
30 sec
Q.
instruments used to measure absolute atmospheric pressure
115
30 sec
Q.
pressure that exists even in a static situation where water is not moving
116
30 sec
Q.
pressure associated with water movement
117
30 sec
Q.
F= Pressure differential x Surface area
118
30 sec
Q.
A sphere
119
30 sec
Q.
a circular ring placed between an oxygen cylinder and a regulator to maintain a firm seal
120
30 sec
Q.
o-ring orms a watertight seal between moving parts
121
30 sec
Q.
seal that keeps water out, better for shallow operating vehicles.
122
30 sec
Q.
A reinforced area of a hull
123
30 sec
Q.
special type of pipe, tubing, or electrical fitting that penetrates the wall of the pressure housing or hull
124
30 sec
Q.
pressurized openings in the hull that people can pass through
125
30 sec
Q.
Seal and Plug
126
30 sec
Q.
part of an encapsulated that fits down inside the end of a cyllindircal can .
127
30 sec
Q.
method of waterproofing components by embedding them in a solid or rubbery material thereby eliminating the need for housing
128
30 sec
Q.
add a frame inside the can that securely supports electrical components.
