Review - Carbon Cycle and Law of Conservation

A freshwater marsh is a type of ecosystem. Grasses, fish, wading birds, frogs, and alligators live together in freshwater marshes. Pieces of decaying material sink to the bottom of the marsh. In which of these places can carbon be found in the marsh?

• in the atmosphere and water only

• in living things only

• in living things and decaying materials only

• in the atmosphere, water, living things, and decaying materials

Tags

NGSS.MS-LS2-3

Which best compares the roles of nitrogen-fixing bacteria and certain decomposers in the nitrogen cycle?

• The bacteria convert free nitrogen into nitrogen-containing compounds, while the decomposers convert nitrogen-containing compounds into free nitrogen.

• Both organisms convert free nitrogen into nitrogen-containing compounds.

• The bacteria convert nitrogen-containing compounds into free nitrogen, while the decomposers convert free nitrogen into nitrogen-containing compounds.

• Both organisms convert nitrogen-containing compounds into free nitrogen.

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NGSS.MS-LS2-3

During which process of the water cycle does water change from a gas to a liquid?

• precipitation

• evaporation

• transpiration

• condensation

All organisms contain carbon. As organisms grow, they require large quantities of carbon to carry out life processes and make new cells. Where is the source of most of Earth's available carbon?

• Carbon is constantly transported from the mantle to the crust by volcanic eruptions.

• Carbon is constantly recycled from dead organisms back into the environment

• Carbon atoms are constantly transferred from the Sun to Earth along with sunlight.

• New carbon atoms are constantly being created by the process of photosynthesis.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following statements about cycles of matter is true?

• Matter is lost in each cycle.

• Human activity has little or no impact on cycles.

• Each cycle involves evaporation and condensation.

• Matter is transferred between the nonliving parts of the environment and organisms

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Carbon is stored in leaves in various forms, such as sugar. When leaves decay, they lose mass. Which of the following sentences explains what happens to the carbon that is stored in leaves when they decay?

• The carbon evaporates.

• The carbon is destroyed as the leaves decompose.

• The carbon is converted into nitrogen by bacteria in the soil.

• The carbon is converted into carbon dioxide and released into the atmosphere

Tags

NGSS.MS-LS2-3

Which of the following is a carbon reservoir?

• A. A coal burning power plant

• B. Glaciers

• C. Hybrid cars

• D. The atmosphere

Shay constructed a scientific model of the carbon cycle. She included plants, animals, industry, fossil fuels, and the atmosphere. Which of the following arrows belongs in Shay's model?

• A. an arrow pointing in the direction of the moon to the north pole.

• B. an arrow pointing in the direction of the atmosphere from animals

• C. an arrow pointing in the direction of industry from the atmosphere

• D. an arrow pointing in the direction of fossil fuels from the atmosphere

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Maddie must illustrate the carbon cycle for Science class. Which diagram should Maddie draw to illustrate how energy transfers in the carbon cycle?

• A. food web

• B. rock cycle

• C. water cycle

• D. metamorphosis

Tags

NGSS.MS-LS2-3

The four main reservoirs of carbon are the

• cryosphere, biosphere, hydrosphere and atmosphere.

• atmosphere, geosphere, biosphere, and hydrosphere

• hydrosphere, cryosphere, soil and geosphere

• atmosphere, biosphere, troposphere, geosphere

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3