Carbon Cycle and Law of Conservation

Which of the following best explains how plants follow the Law of Conservation of Mass during photosynthesis?

• The reaction uses energy to produce a product without energy.

• A gas (carbon dioxide) and a liquid (water) use energy to produce a solid (carbohydrates).

• The amount of each element that begins photosynthesis equals the amount of each element that is produced.

• The amount of carbohydrates at the beginning of photosynthesis equals the amount of oxygen that is produced.

Tags

NGSS.MS-LS1-6

NGSS.MS-PS1-5

How can the law of conservation of energy be expressed in the case of a chemical reaction?

• total energy before the reaction is always less than the total energy after the reaction

• total energy before the reaction is always greater than the total energy after the reaction

• total energy before the reaction is always equal to the total energy after the reaction

• energy cannot be measured in a chemical reaction

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

According to the diagram, what are the reservoirs of carbon? (Select more than one...)

• Oceans

• Vegetation, Soil, & Rock

• Fossil Fuels (underground)

• Atmosphere

Tags

NGSS.MS-LS1-6

Carbon exists in many forms on Earth. The diagram shows part of the carbon cycle. What is happening in Step 1?

• Animals are releasing energy into the environment and storing

  carbon.

• Animals are decomposing and releasing carbon into the soil.

• Animals are converting carbon dioxide from the atmosphere to

  oxygen.

• Animals are breaking down organic molecules and releasing

  carbon dioxide into the atmosphere through cellular respiration

Tags

NGSS.MS-LS2-3

or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.

• True

• False

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

Which process in the carbon cycle involves the release of carbon dioxide into the atmosphere by plants and animals?

• Photosynthesis

• Decomposition

• Respiration

• Carbon Sequestration

Which describes a way Carbon is released back into the atmosphere?

• through precipitation

• through the burning of fossil fuels

• through assimilation

• through nitrogen fixation

In the carbon cycle, animals can release carbon back into the cycle through __________ or through __________.

• burning . . . photosynthesis

• fixation . . . decomposition

• decomposition . . . photosynthesis

• respiration . . . decomposition

• respiration . . . photosynthesis

Tags

NGSS.MS-LS2-3

If the plant population decreased, the amount of carbon dioxide in the atmosphere would _________.

• Stay the same

• Increase

• Decrease

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How does the carbon in grass become part of a lion?

• The lion eats the grass

• Carbon from grass doesn't end up in a lion. 

• The carbon ends up in the lion's food chain. 

• The lion breathes in carbon given out by the plant

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3