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Oceanography Test 2

Oceanography Test 2 study guide

Heat is... The TOTAL energy of randomly moving molecules
Temperature is... The measure of the AVERAGE speed of molecules
The degrees most often used by scientists to measure temperature? Celcius
The amount of heat required to raise the temperature of a substance by a given amount. Heat Capacity
What happens to water's density as it freezes? becomes less dense
True or false- Most substances, other than water, get denser when frozen. True
Heat loss when water freezes without a change in temperature is called? Latent heat of fusion
The heat required to vaporize a substance is called? Latent heat of evaporation
The tendency for water to resist temperature change? Thermal inertia
Cooling at the same rate as heating is called? Thermal equilibrium
What two things make seawater more dense? Low temperature and Salinity
What happens to the density of seawater as you go deeper? Becomes more dense
What percentage of the ocean's volume is made up by the surface water? 2%
The boundary between layers of the ocean based on temperature? Thermocline
Particles in water absorb light and turn it into what? Heat
A zone of the ocean where sunlight never reaches. Apothic
True or false- Cool ocean temperatures make organisms live longer. False
What is an advantage of an Endotherm's metabolic rate? It's rate stays the same.
How much faster does sound travel through water than air? 5 times faster
The pressure you feel (not fish) as you go deeper in water. Hydrostatic pressure
What happens to the ratio of cell surface to volume as it's diameter increases? Decreases
Why is a high surface to volume ratio in cell's important? It affects the efficiency of the cell membrane
What is the importance of buoyancy on marine organisms? It minimizes the effects of their weight.
The most common adaptation of marine organisms for overcoming water resistance? Streamlining their bodies
Organisms can be be introduced to new habitats via the oceans by this. Drifting
Created by: FordLCHS