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WorksheetsCarbon cycle and climate change review
Total questions: 18
Worksheet time: 13mins
How is the current era of warming different from the warm periods the earth has experienced in the past?
Right now, the earth is warmer than it's ever been
In the past, warming was tied to rising CO2 levels in the atmosphere; right now, the level of CO2 is falling
The current era of warming has likely been caused by human activity
The current era of warming is simply part of the natural cycle
Global warming is the
process of using greenhouse gases to trap heat in the atmosphere
observed and predicted rise in Earth's average surface temperature
change in global weather patterns
melting of the polar ice caps.
Burning which of the following puts the most Carbon dioxide, CO2, into the atmosphere?
Natural gas, CH4
Lamp oil, C12H26
Coal, C
Gasoline, C8H18
As carbon moves through the carbon cycle, energy must be
either used or released
created or destroyed
used only
released only
When hydrocarbons are burned, which of the following are produced? (There is more than one correct answer)
Methane
Energy
Water
Oxygen
Carbon Dioxide
Which is a TRUE statement?
Plants produce carbon dioxide
Humans don't depend on plants for the air they need
Humans depend on oxygen, plants depend on carbon dioxide
Humans depend on carbon dioxide, plants depend on oxygen
