Matter and Energy Flow

How does the decomposition of a fallen tree contribute to the health of a forest?

• The smell of decayed matter repels insects and small animals.

• As the tree decays, nutrients cycle to other organisms.

• A large fallen tree can shelter green plants from the sunlight.

• A fallen tree prevents weathering of rock from occuring.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

In any ecosystem, which of the following must be present in order to support the needs of all the animals?

• Plants are needed to transform energy from the sun into food.

• Tall cliffs or mountains are needed to provide places for shelter.

• Soft soil is needed to allow digging and burrowing.

• Wide-open spaces are needed to watch for predators.

Tags

NGSS.MS-LS2-1

Liquid water is moved from living things to the environment when animals

• eat.

• urinate.

• sleep.

• breathe.

Matter moves directly from plants to animals when plants are eaten by animals. Matter also moves from plants to animals indirectly through

• sunlight.

• heat.

• adapations.

• air.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What happens to carbon dioxide levels in the atmosphere when we burn fossil fuels?

• carbon dioxide levels in the atmosphere rise

• carbon dioxide levels in the atmosphere fall

• carbon dioxide levels in the atmosphere stay the same

Tags

NGSS.MS-ESS3-4

In the image provided, what is shown by the arrows that lead to and from the wolf?

• The wolf is part of several food chains, but not a food web

• The wolf is part of several food chains and several food webs

• The wolf is part of one food web but no food chains

• The wolf is part of one food web but several food chains

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following methods is how primary producers obtain energy?

• Use the sun to produce energy rich compounds

• Produce CO2 through cellular respiration

• Break down chemicals to produce energy rich compounds

• Consuming other organisms

Tags

NGSS.MS-LS1-6

Using the diagram, which of the following describes how energy moves through the food chain?

• between producers and consumers, in either direction

• consumers --> producers; in one direction

• producers --> consumers; in one direction

• producers --> consumers; in a cycle

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How does matter move among the living and nonliving parts of an ecosystem?

• matter is recycled within and between ecosystems

• one-way flow of energy

• two-way flow of energy only

• three-way flow of energy only

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is our role in the carbon cycle? 

• We are made of carbon. 

• We release it into the atmosphere when we breathe. 

• We release it into the atmosphere when using fossil fuels. 

• All of the above. 

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5