Cycling of Matter

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Multiple Choice

Which of the following is a natural source for the release of carbon dioxide in the atmosphere?

• Oceanic emissions
• Volcanic eruptions
• Human activities
• Forest fires

Multiple Choice

What important role does phytoplankton play in the carbon cycle?

• Releasing carbon dioxide through respiration
• Breaking down carbon dioxide into oxygen and carbon
• Storing carbon dioxide in their cells
• Absorbing carbon dioxide through photosynthesis

​Global Warming in the Oceans

Multiple Choice

If the carbon in the atmosphere increases drastically due to increased amounts of carbon dioxide, what would happen?

• Increased average temperatures

• Decreased temperatures and ice age
• Improved air quality and reduced pollution
• Increased rainfall and flooding

Multiple Choice

Some things are sinks for CO2 until they are burned or warmed and then they become sources, including:

• fossil fuels

• oceans

• forests

• all of these

Multiple Choice

Which of the following is causing an imbalance in the carbon dioxide?

• burning fossil fuels

• deforestation

• volcanic eruptions

• both fossil fuels and deforestation

Edio | Commonwealth Charter Academy

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Heat Transfer - Group sort

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