Page 94 - Science Course 3 (Book 1)

Mo2-L7b: How is Energy Flow Modeled?

Let’s Begin
Mo2-L7b How is Energy Flow Modeled?

KEY CONCEPTS: Organisms and Energy
1. Compare a food chain with a food web.
Consumers use the energy and nutrients stored in
other organisms for living and reproducing.

Vocabulary A-Z Consumers are classified as
herbivores, omnivores,
Let us learn some vocabulary carnivores, or detritivores,
based on their diet.

Herbivores are animals
Consumer that eat only producers,
an organism that cannot make its own food and gets such
energy by eating other organisms. as plants.

Omnivores, such as human beings, are animals that
eat both producers and other consumers.

Carnivores, such as lions, eat only other consumers.

Food Chain Detritivores, including some insects, fungi, worms,
a model that shows how energy flows in an bacteria, and protists, eat dead plant or animal
ecosystem through feeding relationships. material.

Carnivore
An animal that
eats only meat.

Food web Herbivore
a model of energy transfer that can show how the An animal that eats
only plant material.
food chains in a community are interconnected.

Omnivore
An animal that eats
plants and meat.

Modeling Energy Flow

A food chain models how
food energy moves from
the environment to
several organisms.

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