Energy Transfer in Ecosystems

Open Ended

In a food chain, food web, or energy pyramid how does the energy flow through the ecosystem. Describe this using producer, consumers, and decomposers. You may use primary, secondary, tertiary, autotroph, and hetotroph.

Math Response

If there's 20,000 kcal on the producer level of this trophic pyramid, how many kcal will be passed on to the primary consumers?

Type answer here

Correct Answer: 2000

Deg^°

Rad

Multiple Choice

What do the arrows represent in this diagram?

• who is being eaten
• the flow of energy
• the decomposition of organisms
• what things can change into

Multiple Choice

What is the correct sequence of the food chain shown in the image?

• Leaf → Caterpillar → Chameleon → Mongoose → Snake

• Leaf → Chameleon → Caterpillar → Mongoose → Snake

• Caterpillar → Leaf → Chameleon → Snake → Mongoose

• Mongoose → Snake → Chameleon → Caterpillar → Leaf

Reorder

Put in order from MOST to LEAST amount of energy.

• Producer

• Primary consumer

• Secondary consumer

• Tertiary consumer

• Apex predator

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Drag and Drop

All the energy in a food chain starts with ​

Placeholder

Drag these tiles and drop them in the correct blank above

the sun.

carbon dioxide

water

light

sugar

oxygen

Match

Match the following to the correct description

• The source of all energy in a food chain.

• Makes its own food using energy from the sun

• eats only plants for energy

• eats only meat for energy

• eats both plants and meat for energy

Sun

producer

herbivore consumer

carnivore consumer

omnivore consumer

• Sun

• producer

• herbivore consumer

• carnivore consumer

• omnivore consumer

Multiple Choice

What is a food chain?

• a diagram with animals only

• stages an organism goes through as it grows

• the place where an organism lives

• the path of energy in an environment

Multiple Choice

The frog is a predator to what prey in this food chain?

• frog
• grass
• grasshopper
• hawk

Multiple Choice

If the producers produce 1000 J of energy, how much energy does the secondary consumer level receive?

• 1000 J

• 10 J

• 100 J

• 1 J

Multiple Choice

If the fox population increases what could happen?

• grasshopper would increase

• owl and grass would decrease

• thrush would die out

• frogs and rabbits would increase

Multiple Choice

How does energy flow in a food chain?

• From producers to consumers to decomposers

• From decomposers to consumers to producers

• From consumers to producers to decomposers

• Energy does not flow in a food chain

Multiple Choice

Which list shows a correct food chain to show the flow of energy in a marsh habitat?

• heron, fish, sun, grass, water bugs

• water bugs, sun, grass, fish, heron

• fish, water bugs, sun, grass, heron

• sun, grass, water bugs, fish, heron

Multiple Choice

What are the two types of secondary consumers mentioned in the image?

• Carnivores

• Herbivores

• Omnivores

• Producers

Open Ended

Describe what decomposers are and their role in an ecosystem.

Multiple Choice

What do the arrows in food chains and food webs represent?

• Who eats who

• Transfer of energy

• Feeding relationships

• Complexity of food webs

Multiple Choice

Where does 90% of the energy go?

• To the environment as heat

• Stored in digestible parts

• Used for growth

• Passed on to the next organism

Hotspot

If the producers have 1,000 joules of energy, click on the level that will have 100 joules.

Labelling

A food pyramid is shown to represent the transfer of energy in a food chain. Label the amount of energy available to each trophic level if producers have 10,000 kJ of energy.

Drag labels to their correct position on the image

1 kJ

9 kJ

100,000 kJ

1,000 kJ

100 kJ

9000 kJ

10 kJ

900 kJ

Multiple Choice

How do atoms like oxygen, carbon, and nitrogen move through an ecosystem's living and nonliving parts?

• They are only found in living things such as plants, animals and fungi.

• They are only found in nonliving things such as air and water.

• They cycle through the ecosystem through living and nonliving things over and over.

• They are used only once then lost.

Dropdown

producer =

Select answer

Primary Consumer = ​

Select answer

Secondary Consumer = ​

Select answer

Tertiary Consumer = ​

Select answer

Multiple Choice

Which organism do the owl and the weasel compete for in the food web?

• Hawk
• Spider
• Grasshopper
• Shrew

Multiple Choice

Who does the owl get energy from? 

• Grass
• Grasshopper
• Mouse
• Owl

Multiple Choice

Which of the following organisms

could be classified as a tertiary consumer

based on the food web to the right?

• Frog

• Weasel

• Great horned owl

• Goldfinch

Reorder

Put this food chain in the correct order

• Grass

• Rabbit

• Snake

• Hawk

1

2

3

4

• 1
• 2
• 3
• 4

Match

What is the diet of all the organisms?

• cricket
• frog
• hawk
• Marsh grass

herbivore

carnivore

low level predator

carnivore

top level predator

autotroph

• herbivore

• carnivore

  low level predator

• carnivore

  top level predator

• autotroph

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident