TE12 3.02: Evaluate communication systems.

The filter on an aquarium cleans and filters water based on the level of algae in the tank. If the aquarium has fewer fish in the tank, then it will tend to filter less. The filter system is controlled by a computer but must be checked by a human employee. This is an example of:

• a simple system.

• an unnecessary element.

• a complex system.

• a feedback loop.

Using the systems approach, whispering something into another person's ear is an example of:

• input.

• feedback.

• process.

• output.

Technologists gather relevant material to produce evidence for a portfolio. This is called:

• researching and exploring.

• deploying ideas.

• consolidating and reflecting.

• building and developing.

Who clarifies ideas when asked and uses words, sketches, and models to communicate the details of their projects?

• Engineers

• Artists

• Designers

• Technologists

Which has the most influence within a technological system?

• Subsystem

• Operating system

• Input loop

• Feedback loop

When engineers generate, build, and combine concepts in new and flexible ways, it is called:

• defining problems

• designing a prototype.

• developing ideas.

• finding a solution.

Complex systems such as the filtration system in a very large aquarium fish tank rely on:

• input loops.

• feedback loops

• relay loops.

• computer loops