Energy Flow

Open Ended

Think about how energy decreases as we go higher up in the energy pyramid. Why do you think there can't be more trophic levels above the hawk?

Categorize

Options (6)

Plants

Makes their own food

Consumers

Must eat to get energy

Producers

Animals

Organize these options into the right categories

Autotrophs

Heterotrophs

Multiple Choice

What are the main differences between photosynthesis and chemosynthesis in terms of their energy sources?

• Sunlight

• Chemicals

• Plants

• Deep sea vent bacteria

Multiple Choice

For the food chain shown, which of the following changes would have the most severe consequences?

• a drastic decrease in rainfall, causing a drought

• the poaching of predatory hawks by game hunters

• the introduction of a second predator that eats field mice

• a parasitic infestation that reduces the cricket population

Reorder

Put the following organisms in the correct order to create a food chain

• Grass

• Cricket

• Frog

• Snake

• Hawk

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Open Ended

Energy flows from producers to consumers, as shown in food chains and food webs. Only about 10% of that energy is transferred when a consumer eats. What happens to the remainder of the energy that does not get transferred?

Multiple Choice

This question is confusing! Look CAREFULLY at the image. What trophic level is the PRIMARY consumer?

• 1st

• 2nd

• 3rd

• 4th

Fill in the Blanks

Explain what is happening at each level of this energy pyramid. What groups of organisms would you find in each level? How much energy would they have?

Multiple Choice

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident