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4.02 Network representations

Interactive practice questions

Within a water system the feeding chain can be described as follows:

Tadpoles, Water Beetles and Snails all survive by eating algae.

Small Fish eat the tadpoles, whilst frogs survive on water beetles and snails.

The kingfisher, a skillful fishing bird, survives on eating small fish and frogs.

Which of the following graphs represents the feeding chain? Note that the arrows point from the thing that is eaten to the thing that eats it.

A

B

C

D

A

B

C

D
Easy
Approx a minute
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This diagram represents the internet fiber optics cables connecting several cities.

This diagram represents an electrical circuit that includes a globe, resistors and multiple switches.

The following figure displays newspaper routes between several houses.

Outcomes

ACMGM079

identify practical situations that can be represented by a network, and construct such networks; for example, trails connecting camp sites in a National Park, a social network, a transport network with one-way streets, a food web, the results of a round-robin sporting competition

ACMGM080

construct an adjacency matrix from a given graph or digraph

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