Burn Baby Burn

The geologic portion of the carbon cycle operates on a scale of days to months.

• True
• False

Photosynthesis is the process by which plants ____________. 

• A.  release CO₂ to the atmosphere.
• B.  turn CO₂ into sugars
• C.  turn sugars into energy
• D.  none of the choices

Respiration is the process by which ____________ is consumed and _______________ is produced.

• A.  carbon dioxide, oxygen
• B.  carbon dioxide, energy
• C.  oxygen, carbon dioxide
• D.  energy, carbon dioxide

Regular, annual fluctuations in atmospheric carbon dioxide concentrations occur because ____________.

• A. photosynthesis stops at night while respiration continues
• B. humans influence the carbon dioxide concentrations
• C. carbon dioxide emissions increase in the winter
• D.  plants in the northern hemisphere lose their leaves during the winter

How does the concentration of carbon dioxide in the atmosphere affect climate?

• A.  As carbon dioxide concentration increase, temperatures decrease.
• B.  As carbon dioxide concentrations increase, temperatures increase.
• C.  Carbon dioxide concentrations have no effect on climate.
• D.  As carbon dioxide concentrations increase, temperatures become more random. Option 4 (optional)

According to most scientists, activities like fossil fuel burning and deforestation have affected the global carbon cycle.

• A. True
• B.  False

The amount of oil that may become available for use is called oil ____________.

• A.  reserves
• B.  reservoirs
• C.  resources
• D.  traps

What does the fuel mainly contain?

• A.  High Percentage of Carbon and Hydrocarbons
• B.  High percentage of Carbon and Silicon
• C. High Percentage of Water and Hydrocarbons

Although direct measurements of atmospheric carbon dioxide have only been taken consistently since the 1950s, scientists have been able to retrieve data from the past 500,000 years. They have been able to do this by looking at ____________.

• A. ice cores from ice sheets
• B. sediment cores from the ocean
• C. tree rings
• D. all of the choices

Two-thirds of the world’s known oil reserves are located in ____________. 

• A. Siberia
• B. Gulf of Mexico and Caribbean
• C. the Middle East
• D.  Indonesia