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Flashcards in Aquatic Biomes And Fluid Dynamic Deck (27):
0

The ability or tendency to float in water or air and some other fluid

Buoyancy

1

The centerfold of the immersed part of a ship or other floating body

Center of buoyancy

2

an upward force exerted by a fluid that opposes the weight of an immersed object

Net buoyant force

3

The moving of something from its place or position

Displacement

4

A steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temps

Thermocline

5

What are the characteristics of aquatic ecosystems?

Temp, salinity, oxygen, nutrients and sunlight

6

What are the 3 types of organisms found in aquatic ecosystems?

Phytoplankton , nekton, benthos

7

Near the shore

Littoral

8

Near the bottom

Benthic

9

What 2 seasons does lakes turnover?

Spring and autumn

10

Areas saturated with water during part of the year

Wetlands

11

Which biome is the most diverse ?

Coral reefs

12

What is the salinity of the ocean

3%

13

What is the salinity of freshwater?

0.5%

14

Pressure applied to a fluid in a closed container is equally applied to all parts of the fluid and the container

Pascals principle

15

How does pascals principle apply to water??

Scuba divers

16

The transfer of energy by the motion of a liquid or gas; think convection oven,
it blows hot air around the oven to cook the food more quickly

Convection

17

When gravitational force is greater than buoyant force what will happen?

The object will sink

18

When the gravitational force is less then buoyant force what will happen?

The object will float

19

When the gravitational force is equal to the buoyant force what will happen

It will neither sink nor float

20

Will buoyant force increase or decrease one more of the volume of an object is underwater?

Increase

21

Why is buoyant force and upward force not horizontal

Because it opposes gravity which is an downward force

22

The buoyant force is equal to the weight of the displaced water

Archimedes principle

23

As it contracted the plates and the fish sinks as it relaxes to fill with oxygen and causes of fish to become more buoyant

Swim bladder

24

The pressure of a fluid (gas or liquid) as the fluid velocity increases

Bernoulli's principle

25

Which animal in the ocean is most affected by the Bernoulli's principal?

The shark, it becomes less boy it when it stops moving

26

What will happen if net buoyant force is zero?

Neither float or sink