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Feedback Loops Mid-Point Test
By Jennifer LeVene
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Last updated almost 5 years ago
10 questions
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2
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Question 1
1.
Which of the following are examples of a negative feedback loops? (level 1)
Global warming
A thermostat that controls the heat in your home
Loss of biodiversity
Fruit ripening
Convection currents
Question 2
2.
(level 1)
The image above is an example of a...
A positive feedback loop
A negative feedback loop
Question 3
3.
Which statement about carbon dioxide is true? (level 2)
Global temperatures depend on the total amount of carbon on earth
Oceans absorb carbon dioxide much faster than humans add it to the atmosphere.
Human actions have little effect on the amount of carbon in circulation.
Burning fossil fuels increases atmospheric carbon dioxide levels
Question 4
4.
The main influence on Earth’s climate over geologic time is: (level 2)
Plate tectonics
Human activity
The water cycle
Milankovitch cycles
Question 5
5.
Which is an example of a positive feedback loop? (level 2)
Decreasing temperature ➜increase in ice cover ➜increase in reflection of sunlight ➜decrease in temperature
Decreasing temperature ➜decrease in plant cover ➜decrease in absorption of carbon dioxide ➜increase in temperature
Increasing temperature ➜increase in plant cover ➜increase in absorption of carbon dioxide ➜decrease in temperature
Increasing temperature ➜increase in weathering and erosion ➜increase in marine shell growth ➜decrease in temperature
Question 6
6.
The geologic record shows that over long periods of time, Earth’s climate is dominated by: (level 1)
Warming conditions
Cooling conditions
Positive climate feedback
Negative climate feedback
Question 7
7.
Under the influence of positive climatic feedback conditions, relatively warm global climate conditions become: (level 2)
Cooler
Warmer
Less stable
More stable
Question 8
8.
A group of scientists is studying climate change. Which of the following are they least likely to be studying? (level 2)
Ice cores
Coal deposits
Sunspot records
Oxygen isotopes
Question 9
9.
Describe
why
you chose the answer that you did for number 8? (level 3)
Question 10
10.
The carbon cycle is a large Feedback Loop. Is it considered a positive or negative feedback loop? Explain why you chose that type of Feedback Loop.
You can verbally explain your answer by clicking the + sign and choosing audio.