3.1.10 feedback

Which of the following describe positive feedback?

• Enhancement or amplification of change.

• Any change will be lessened or reduced.

• Suggestion of change

The image shows and example of....

• A positive feedback loop

• A negative feedback loop

What does the term 'Threshold' mean?

• When the driving force is amplified

• The balance between two factors

• The point at which, if passed, the previous state cannot be returned.

Albedo is associated with which type of feedback cycle?

• Cryosphere

• Methane

• Marine

Name the gas shown.

• Carbon dioxide

• Methane

• Nitrous oxide

• CFC's

Is the following an example of positive or negative feedback?

Increased level of CO2- warmer climate- better conditions for photosynthesis- lowering levels of atmospheric CO2.

• Positive

• Negative