The Carbon Cycle

Which of these are anthropogenic (man-made) sources of atmospheric carbon?

• industry emissions

• volcanic eruptions

• burning of fossil fuels

• deforestation

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NGSS.MS-ESS3-4

Which of these are natural sources of atmospheric carbon?

• decomposition

• volcanic eruptions

• deforestation

• wildfires

True or false? Carbon is an essential element of life.

• True

• False

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NGSS.MS-LS2-3

Which of these contain carbon atoms?

• gasoline

• coal

• oceans

• gold

• the atmosphere

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NGSS.MS-PS1-1

NGSS.MS-PS1-2

Which of these are sources of atmospheric carbon?

• cellular respiration

• photosynthesis

• respiration

• transpiration

• evaporation

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NGSS.MS-LS1-6

How many protons would an atom of carbon have in its nucleus?

• 6

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

How many electrons would an atom of carbon have on the outside of its nucleus?

• 6

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

How many neutrons would an atom of carbon have in its nucleus?

• 6

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

An isotope is a version of an element that has the same number of protons but is heavier or lighter. This version of carbon, Carbon-14, has a mass of 14 AMU. How many neutrons would an atom of carbon have in its nucleus?

• 6

• 7

• 8

• 4

Tags

NGSS.MS-PS1-1

Gases containing carbon move between

the ocean’s surface and the atmosphere

through a process called...

• transpiration

• osmosis

• diffusion

• saturation