Page 92 - Science Course 3 (Book 1)

Ecosystem: Movement of Energy Mo2-L7a: How Does Energy Flow in an
Lesson 7 Ecosystem?

Let’s Begin

In this topic, you will learn the following
lessons: Energy Flow
Organisms get energy from food that they make
Mo.2–L7a: How Does Engergy Flow in an Ecosystem?
Mo.2–L7b: How is Energy Flow Modeled? using light or chemical energy or by eating other
Mo.2–L7c: What are the Cycles Happened in the organisms.
Ecosystem?
When one organism eats another, the energy in the
organism that is eaten is transferred to the organism
that eats it.
Mo2-L7a How Does Engergy Flow in an Ecosystem?

KEY CONCEPTS:
1. How does energy move from a producer to other
organism?

Vocabulary A-Z
Let us learn some vocabulary

Producer
an organism that uses an outside energy source,
such as the Sun, and produces its own food.

Energy Flow Organisms and Energy

Energy travels through organisms, populations, Scientists classify organisms by the way they get the
communities, and ecosystems in a flow. energy they need to survive.

When energy moves in a flow it does not return to its Some organisms, such as plants, are able to capture
source, as it does in cycles. the Sun’s energy directly and convert it into energy-
rich sugars that they use for food.

Sunlight Oxygen
Cycle Carbon
Dioxide
Water Glucose

Flow

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