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MATERIALS 1 pair of scissors Tape 1 roll adding machine tape 1 meter stick Sharpie Map pencils

WARNING – YOUR METER STICK IS NOT A SWORD!

INFORMATION For this lab 1mm = 1 kcal (kilocalorie) of

energy! Remember only 10% of energy is

passed up through the trophic levels.

10%

10%10%

STEP ONE– PRODUCER LEVEL Cut a strip of adding machine tape

1,000mm long. This represents 1,000kca of energy. In the middle of the adding machine

tape label it “Producers” with the sharpie.

Producers

STEP TWO – PRIMARY CONSUMER LEVEL Only 10% of the energy is passed from

the producer level to the primary consumer level. So…..10% = .11,000mm X .1 = 100mm

Our primary consumer level needs to be 100mm long.

Cut a strip 100mm long and label it “Primary Consumers” with the sharpie.

Primary Consumers

STEP THREE – SECONDARY CONSUMER LEVEL Only 10% of the energy is passed from

the primary consumer level to the secondary consumer level. So…..10% = .1100mm X .1 = 10mm

Our secondary consumer level needs to be 10mm long.

Cut a strip 10mm long and label it “S. Consumers” with the sharpie.

S.

Con

su

mers

STEP FOUR – TERTIARY CONSUMER LEVEL Only 10% of the energy is passed from

the secondary consumer level to the tertiary consumer level. So…..10% = .110mm X .1 = 1mm

Our secondary consumer level needs to be 1mm long.

Cut a strip 10mm long. You cannot label this. It is too small!

STEP FIVE – TAPE IT ALL TOGETHER Tape all of this together and attach to a

sheet of construction paper in a LIGHT COLOR!!!!

STEP SIX – FINISH LABELING & ADD ORGANISMS

First title your model “Energy Pyramid”

Next label your Tertiary Consumers level.

STEP SIX CONTINUED – FINISH LABELING & ADD ORGANISMS

Use this food web as reference. Draw the organisms on the appropriate

trophic level!