Grade 7 Science Starter Lesson: Energy Flow Through Ecosystems

Last updated over 1 year ago

8 questions

Note from the author:

Instructions

1

In this lesson, you will explore the flow of energy among living and nonliving parts of an ecosystem.

Essential Question: How does energy flow through an ecosystem?

In this lesson, you will explore the flow of energy among living and nonliving parts of an ecosystem.

Essential Question: How does energy flow through an ecosystem?

1

Define the term 'trophic level' in the context of energy flow through ecosystems.

1

Drag the tropic level to the correct part of the energy pyramid to show how the energy flows in an ecosystem.

Which organism is always the first in the energy flow through an ecosystem?

Drag each organism into the correct box that matches its trophic level.

moss
phytoplankton
rabbit
owl
butterfly
deer
hawk

Primary producers
Primary consumers
Secondary consumers
Tertiary consumers

Which of the following best describes the role of decomposers in an ecosystem?

They break down dead organisms and recycle nutrients back into the environment

They produce their own food through photosynthesis

They consume other organisms for energy

They are the top predators in the food chain

Which are true about trophic levels and the food chain? Select three correct answers.

Having too many trophic levels is inefficient because so much energy is lost as heat.

Due to the recycling of decomposers, all the lost energy can be reused by producers.

Plants are able to use 90% of the sunlight that reaches the surface of the earth.

Every consumer relies on some producer for energy.

Humans rely on producers' ability to convert solar energy for their survival.

Drag each organism category into the correct box to match its energy-related description.

consume both plants and animals for energy
convert sunlight into energy through photosynthesis
recycle energy by breaking down nonliving plant and animal remains
obtain energy by consuming plants

Producers
Herbivores
Omnivores
Decomposers

Energy is lost as it passes through each trophic level in an ecosystem.

True

False

Which organism is always the first in the energy flow through an ecosystem?

Producers

Primary Consumers

Secondary Consumers

Decomposers

Teritary Consumers

Drag each organism into the correct box that matches its trophic level.

moss

phytoplankton

rabbit

owl

butterfly

deer

hawk

Primary producers

Primary consumers

Secondary consumers

Tertiary consumers

Which of the following best describes the role of decomposers in an ecosystem?

They break down dead organisms and recycle nutrients back into the environment

They produce their own food through photosynthesis

They consume other organisms for energy

They are the top predators in the food chain

Which are true about trophic levels and the food chain? Select three correct answers.

Having too many trophic levels is inefficient because so much energy is lost as heat.

Due to the recycling of decomposers, all the lost energy can be reused by producers.

Plants are able to use 90% of the sunlight that reaches the surface of the earth.

Every consumer relies on some producer for energy.

Humans rely on producers' ability to convert solar energy for their survival.

Drag each organism category into the correct box to match its energy-related description.

consume both plants and animals for energy

convert sunlight into energy through photosynthesis

recycle energy by breaking down nonliving plant and animal remains

obtain energy by consuming plants

Producers

Herbivores

Omnivores

Decomposers

Energy is lost as it passes through each trophic level in an ecosystem.

True

False