Name
Date Class
Key Concept How does energy move in ecosystems?
Directions: Unlike matter, which cycles through ecosystems, energy flows through ecosystems. In the spaces below, draw a simple diagram that illustrates the difference between these two concepts. Use arrows in your diagrams.
1. Cycle: 2. Flow:
LESSON 3
Directions: Complete each item on the lines provided.
3. In which diagram could you include the Sun?
4. Where in the diagram would you place it?
5. Put a check mark next to the phrase that correctly completes this sentence :
The principle that energy cannot be created or destroyed is called the law of
continuation of energy.
preservation of energy.
conservation of energy.
flow of energy.
6. Energy in an ecosystem moves from one
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to another.
Matter and Energy in the Environment

Name
Date Class
Key Concept How does energy move in ecosystems?
Directions: Complete this student’s paragraph by choosing terms from the word bank and writing them in the correct spaces. Some terms may be used more than once.
bacteria chemosynthesis compounds energy food organisms photosynthesis plants seafloor Sun
LESSON 3
Producers are (1.)
.
that use (2.)
. Most producers, like (4.) to make their own (3.)
, use (5.)
in a process called (7.)
Some producers, including certain kinds of (8.) called (9.) . In this process, (10.) flowing from beneath the comes from (11.)
(12.)
Directions: Circle the terms in parentheses that correctly complete each sentence.
13. In the process used by most producers, the raw materials include
(carbon dioxide/nitrogen), and one of the by-products is (water/oxygen).
14. (Photosynthesis/Chemosynthesis) occurs at places called
(hydrothermal vents/volcanic spires).
Matter and Energy in the Environment
from the (6.)
, use a process
.
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