Energy Flow
Food Chains/Food Webs
Trophic Levels
Real Life Scenarios
Brain Teasers
100

Where all energy in an ecosystem begins. 

What is the Sun?

100

A model that shows one pathway of energy transfer. 

What is a food chain?

100

This trophic level has the most energy available. 

What are producers?

100

A drought reduces plant growth. This trophic level is affected first.

What are producers?

100

This has hands and a face, but no arms or legs. 

What is a clock?

200

An organism that makes its own food. 

What is a producer?

200

In the chain Grass -> Mouse -> Snake, this organism is the primary consumer. 

What is the mouse?

200

The percent of energy that is transferred to the next level.

What is 10%?

200

If a wildfire destroys the grass in an ecosystem, this happens to the population of primary consumers. 

What is the population decreases?

200

This is always in front of you, but can never be seen. 

What is the future?

300

These organisms break down dead animals and return nutrients to the soil. 

What are decomposers?

300

A network of many connected food chains. 

What is a food web?

300

Secondary consumers eat these organisms. 

What are primary consumers?

300

The following food chain takes place in a local lake: Algae -> Mayfly -> Bluegill -> Largemouth Bass. This will happen if the Bluegill population decreased. 

What is the Mayfly population will increase, while the Largemouth Bass population will decrease. 

300

This is something you can catch, but cannot throw. 

What is a cold?

400

Arrows in a food chain/food web represent this. 

What is energy transfer?

400

In Grass -> Grasshopper -> Frog -> Hawk, this organism receives the least energy. 

What is the hawk?

400

If producers have 5,000 energy units, primary consumers receive this amount. 

What is 500 units?

400

A hiker notices a fallen log that is covered in mushrooms and fungi, breaking it down into soil nutrient. This is the role of the mushrooms. 

What is a decomposer?

400

These month(s) have 28 days. 

What is all of them?

500

The form of energy that is lost at each trophic level. 

What is heat (thermal energy)?

500

If primary consumers are removed, this will likely happen to producers and secondary consumers. 

What is producers will increase and secondary consumers will decrease?

500

 Beginning at 10,000 energy units at producers, this amount reaches tertiary consumers. 

What is 100 energy units?

500

In an ecosystem, a caterpillar is seen eating a tomato plant and then a bird eats the caterpillar. The bird is this type of consumer. 

What is a secondary consumer?

500

This is as light as a feather, yet the strongest person can’t hold me for 5 minutes. 

What is a breath?

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