Podcast
Questions and Answers
A food web shows how matter and energy move through an ______.
A food web shows how matter and energy move through an ______.
ecosystem
The snowy owl, arctic fox, and short-tailed weasel are examples of ______ consumers.
The snowy owl, arctic fox, and short-tailed weasel are examples of ______ consumers.
tertiary
The barren-ground caribou, earthworm, and bear sedge are examples of ______.
The barren-ground caribou, earthworm, and bear sedge are examples of ______.
producers
The arrow between the short-tailed weasel and the snowy owl indicates the directional flow of ______ and energy.
The arrow between the short-tailed weasel and the snowy owl indicates the directional flow of ______ and energy.
The brown lemming is an example of a ______ consumer.
The brown lemming is an example of a ______ consumer.
The parasitic jaeger and the rough-legged hawk are examples of ______ consumers.
The parasitic jaeger and the rough-legged hawk are examples of ______ consumers.
The arrow between the brown lemming and the arctic fox shows that the arctic fox eats the brown ______.
The arrow between the brown lemming and the arctic fox shows that the arctic fox eats the brown ______.
The lichen and mushroom are examples of ______ in the food web.
The lichen and mushroom are examples of ______ in the food web.
The short-tailed weasel consumes the brown ______.
The short-tailed weasel consumes the brown ______.
The energy flow starts from producers to consumers in the food ______.
The energy flow starts from producers to consumers in the food ______.
Flashcards
Secondary Consumer
Secondary Consumer
An organism that eats primary consumers.
Tertiary Consumer
Tertiary Consumer
An organism that eats secondary consumers.
Food Web
Food Web
A diagram showing the flow of energy and nutrients between organisms in an ecosystem.
Study Notes
- Bernoulli's principle states that for an inviscid flow, an increase in fluid speed occurs simultaneously with a decrease in pressure or potential energy.
- The principle applies to inviscid flows, which are flows of fluid with zero viscosity.
Applications of Bernoulli's Principle
- Used in aerodynamics to design airfoils, like airplane wings, where faster airflow over the top creates lift due to a pressure difference.
- Used in fluid mechanics to design efficient and reliable pipelines and other fluid systems.
- Used in meteorology to explain weather patterns, such as why wind is stronger at mountain tops.
Mathematical Form
- Expressed as: $P + \frac{1}{2} \rho v^2 + \rho gh = constant$
- P represents the pressure of the fluid
- ρ is the density of the fluid
- v si the speed of the fluid
- g is the acceleration due to gravity
- h is the height of the fluid
- The equation implies that along a streamline, the sum of pressure, kinetic energy per unit volume, and potential energy per unit volume remains constant.
Example
- A Venturi tube demonstrates the principle; fluid speed increases at the constriction, leading to a measurable decrease in pressure.
Limitations
- Applies only to inviscid flows.
- Only applicable along a streamline, a line tangent to the fluid's velocity vector.
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