Test
Unit 3 Chemical Oceanography
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Preguntas del test (45)
1What is the cause of a meniscus?
- ACovalent Bonds
- BCohesion
- CAdhesion
- DIonic Bonds
2What is the cause of surface tension?
- ACohesion
- BTranspiration
- CAdhesion
- DCapillary Action
3Why does ice float?
- AIt is more dense than liquid water.
- BDue to its crystalline structure.
- CIce does not float, it sinks.
- DDue to its specific heat capacity.
4Water is known as the universal solvent. How does it dissolve Halite (rock salt)?
- ABy surrounding the individual atoms in the salt molecule and breaking the covalent bonds between Cl- and Na+
- BBy surrounding the salt molecule and attaching H2O molecules to the Cl- and Na+ molecule
- CSalt is like oil, it does not mix with water
- DBy surrounding the individual atoms in the salt molecule and breaking the ionic bonds between Cl- and Na+
5Salinity is...
- AThe total amount of dissolved solids in water, excluding organic material
- BIncludes gasses
- CThe ratio of the mass of dissolved substances to the mass of the water sample
- DA ratio in ppt (parts per thousand) showing how many NaCl (salt) molecules are present in the water
- EIs expressed as psi (pounds per square inch)
6Typical ocean salinity is...
- A35 ppt
- B50 ppt
- C71 ppt
- D3 ppt
7What process is occurring here?
- ASalinity
- BCarbonate Buffering
- CDecomposition
- DNutrient Cycling
8What element is responsible for lowering the pH of ocean waters?
- AHydrogen
- BOxygen
- CNitrogen
- DHelium
9What 3 things work together to determine water density (weight of water divided by the amount of space it occupies)?
- APressure
- BSalinity
- CTemperature
- DBuoyancy
- EpH
- FNumber of organisms
10What does the density of a typical liquid tell us?
- AAs temperature increases, density increases
- BAs temperature decreases, density increases only to a certain temperature
- CAs temperature increases, density decreases
- DThere is no correlation between temperature and density
11What does the density curve of water tell us?
- AThere is no correlation between temperature and density
- BAs temperature increases, density increases
- CAs temperature decreases, density increases only to a certain temperature
- DAs temperature increases, density decreases
12Why does water have such a high specific heat?
- AIt takes a lot of energy to break the bonds between water molecules before an increase in temperature can occur
- BIt takes a lot of energy to create the bonds between water molecules before an increase in temperature can occur
- CWater is unable to hold onto heat and it most passes right through before an increase in temperature can occur
- DSpecific heat has nothing to do with the water temperature
13Why does a ship float and a rock sink?
- AThe rock weighs more than the ship, so it sinks
- BThe ship weighs more than the rock, so it floats
- CThe ship has a greater surface area to displace enough water for the buoyant force to match the force of gravity
- DThe rock has a greater surface area to displace enough water for the buoyant force to match the force of gravity
14Which of the following holds that, "The buoyant force acting on a submerged object is equal to the weight of the fluid the object displaces"?
- ANewton's Law of Bouyancy
- BLocard's Principle
- CEinstein's Principle
- DArchimedes' Principle
15You can change an object’s density by: (Select 2)
- AYou cannot change an object's density because density means how many atoms it has
- BIncreasing/decreasing its mass
- CYou cannot change an object's density because the pull of gravity never changes
- DIncreasing/decreasing its volume
- EIncreasing/decreasing its location
16An object floats when: (Select 3)
- AWeight is less than the buoyant force
- BObject decreases its mass and becomes less dense than the fluid
- CObject decreases its volume and becomes denser than the fluid
- DObject is less dense than the fluid
- EWeight is more than the buoyant force
17Why does the ball float?
- ABecause the ball is filled with Helium
- BBecause the Buoyant Force is less than the weight of the ball
- CThe ball won't float, it will sink
- DBecause the Buoyant Force is greater than the weight of the ball
18Buoyant force is the upward force that acts on a submerged object.
- AVerdadero
- BFalso
19Vent water is 350 degrees Celsius or 662 F. Why does vent water not boil?
- AAs pressure decreases, more heat is needed for water molecules to vaporize and boil
- BAs pressure increases, more heat is needed for water molecules to vaporize and boil
- CVent water is boiling
- DThere are too many solutes in the water for it to boil
20With no sunlight, what is the base of the deep-ocean food web?
- APhotosynthesis
- BChemosynthesis
- CPhytoplankton on the surface of the waters
- DMussels, clams and crabs
21What two organisms have a symbiotic relationship in chemosynthesis?
- AYeti Crab and Mussels
- BTube worms and Yeti Crab
- CTube worms and bacteria
- DBacteria and Shrimp
22Where are hydrothermal vents located?
- AAt the bottom of trenches
- BNext to volcanoes
- CWhere magma is close to the surface – Mid Ocean Ridges
- DIn the middle of tectonic plates to release a buildup of trapped gases
23Hydrothermal vent gases are toxic to most organisms.
- AVerdadero
- BFalso
24White smokers are the hottest of the 3 types of hydrothermal vents.
- AVerdadero
- BFalso
25According to this graph, Dissolved Oxygen levels are dependent upon:
- ATemperature; the colder the water, the more DO it can hold.
- BTemperature; the warmer the water, the more DO it can hold.
- CPressure; the higher the pressure, the more DO it can hold.
- DPressure; the lower the pressure, the more DO it can hold.
26Oxygen uses diffusion to move between the atmosphere and water column.
- AVerdadero
- BFalso
27The slower the water velocity, the higher the amount of Dissolved Oxygen (DO).
- AVerdadero
- BFalso
28Select all the abiotic factors that affect Dissolved Oxygen (DO) levels. (Select 5)
- ATemperature
- BNumber of Organisms
- CTurbidity
- DWind
- ECloud Cover
- FCurrent Velocity
- GDecomposition Rates
29Explain what is occurring at sunset.
- AMaximum photosynthesis has occurred and production decreases as the sun goes down.
- BMaximum photosynthesis has occurred and production increases as the sun goes down.
- CPhotosynthesis was stopped and is starting back up.
- DPhotosynthesis is continuing at a steady rate.
30What process is responsible for most of the dissolved oxygen levels in oceans?
- ACarbonate Buffer
- BPhotosynthesis
- CChemosynthesis
- DDecomposition Rates
31Pure water has a stronger taste than ocean water.
- AVerdadero
- BFalso
32What causes water droplets to bead on leaves?
- ASurface Tension
- BAdhesion
- CCapillary Action
- DGravity
33Water is known as the Universal Solvent. This means that it is able to dissolve everything.
- AVerdadero
- BFalso
34Most of the dissolved particulates in water that constitute its salinity, come from all of the following, except:
- ARivers
- BVolcanoes
- CHydrothermal Vents
- DDiverging Plate Boundaries
- EConverging Plate Boundaries
35There is more saltwater on Earth than there is freshwater.
- AVerdadero
- BFalso
36How many bars of pressure are exerted at sea level?
- A1 bar
- B2 bars
- C5 Bars
- D10 bars
37How many psi (pounds of pressure) are contained in 1 bar?
- A14.7
- B20.3
- C33
- D10.5
38Divers get the bends if they do what?
- AForget to breathe regularly and evenly in their SCUBA
- BDescend too quickly
- CAscend too quickly
- DStay down too long
39The bends refers to what process happening inside the human body?
- ABlood beginning to boil
- BDissolved gases returning to vapor form
- CAir collecting in the heart
- DLack of blood to the brain
40What color penetrates the deepest in water?
- AViolet
- BGreen
- CRed
- DBlue
41All of the following affect the color of water, except:
- AAlgal Blooms
- BThe color of the sky
- CThe molecular structure of water
- DCloud cover
- ESalinity Levels
42A series of clicks and whistles produced by organisms that bounce off of objects and returns to the sender is known as:
- AEcholocation
- BSonar
- CSecchi Disk
- DChemosynthesis
43Sound travels fastest in which order (Fastest to Slowest):
- ASolid, Liquid, Gas
- BGas, Liquid, Solid
- CLiquid, Gas, Solid
- DLiquid, Solid, Gas
44Temperature and pressure have an affect on the speed of sound in water.
- AVerdadero
- BFalso
45N2 gas build up can cause paralysis and convulsions (divers’ palsy), difficulties with muscle coordination and sensory abnormalities (divers’ staggers), numbness, nausea, speech defects, and personality changes
- AVerdadero
- BFalso
Información
- Descripción
- 9th grade Oceans Test sobre Unit 3 Chemical Oceanography, creado por Jennifer Tuxford el 30/11/2017.
- Autor
- Jennifer Tuxford
- Idioma
- English
- Visitas
- 10
- Etiquetas
- Valoración
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