Carbon Cycle

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

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NGSS.HS-ESS2-6

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

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NGSS.MS-LS1-6

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

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NGSS.MS-LS1-6

In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

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NGSS.MS-LS1-6

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

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NGSS.MS-ESS2-1

NGSS.MS-LS2-3

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

• Stay the same
• Increase
• Decrease

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NGSS.HS-LS2-5

Earth has a fixed amount of _____.

• trees
• carbon
• carbon dioxide

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NGSS.MS-LS2-3

The law of conservation of matter states:

• Energy can neither be created nor destroyed, only change forms.
• Matter can neither be created nor destroyed, only change forms.
• Matter can not be created but can be destroyed.
• Energy cannot be created, but can be destroyed as evidenced by heat.

Identify which is MOST accurate.

• A finite amount of carbon exists on Earth, and it moves through living and nonliving materials through the carbon cycle.

• The amount of carbon in the universe cycles, gradually increasing as it moves up the food chain, and decreasing until the next phase of the cycle.

• Carbon flows through the food chain as animals eat it, then decomposes and is permanently removed from the system when the fod chain is complete.

• Carbon enters Earth's atmosphere when animals exhale, then moves into space where its amount steadily increases, and finally moves back into Earth's atmosphere to be used again.