Focus On Earth Science: California Grade 6

Lesson 2: Energy in Ecosystems

Standards Check

1.
Which does not flow in a cycle through the environment? 5.a, 5.b
A)carbon dioxide
B)water
C)energy
D)nitrogen
2.
A food ______ is a model that shows the complicated flow of energy is an ecosystem. 5.a, 5.b
A)diagram
B)chain
C)pyramid
D)web
3.
What is largest level of an energy pyramid? 5.a, 5.b, 5.c
A)tertiary consumers
B)primary consumers
C)secondary consumers
D)producers
4.
Each organism releases some energy to the environment as _______. 5.a
A)heat
B)carbon
C)nitrogen
D)phosphorus
5.
Why do the layers in an energy pyramid get smaller toward the top? 5.a
A)There are more carnivores than the layer below.
B)Each layer has less energy than the layer below.
C)Each layer has less sunlight than the layer below.
D)There are fewer herbivores than the layer below.
Grade 6
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