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04 Wildfires

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Last updated about 2 hours ago
14 questions
Note from the author:
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If you need help with this assignment, please watch the class recording.

If you need help with this assignment, please watch the class recording.

Learning Target #1: Identify Earth's spheres and describe how they interact
Most wildfires are naturally occurring and many ecosystems benefit from the natural cycles of forest fires. Burned forests eventually decompose, replenishing the soil with nutrients that allow for new species to grow. Certain plants, such as the Giant Sequoia trees of the Redwood forests, even depend on fires to reproduce. However, man-made changes in Earth’s climate have created hotter and drier fire environments, leading to larger wildfires and longer fire seasons.
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Question 1
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Question 2
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Question 3
3.

Question 4
4.

Question 5
5.

Question 6
6.

Learning Target #2: Define negative and positive feedback loops and explain how they are different
Wildfire is part of the natural life cycle of a forest. They clear out dead and decaying material on the forest floor and release nutrients back into the soil. Indigenous peoples understood the value fire had on the land and would purposely set them to clear forests for hunting, agriculture, and travel. Today, prescribed burns are used to reduce the potential fuel for catastrophic wildfires.
Question 7
7.

Using the image above to help you, what is one benefit of wildfires?

Question 8
8.
Scientists have been monitoring changes in global temperatures and the amount of wildfires. Consider the following graph that shows the US surface temperature anomaly (the number of degrees above average) and the acres of land burned each year.

What is the relationship?

As the temperature anomaly increases over time, the number of acres burned __________
Question 9
9.

Predict: How could higher temperatures lead to more wildfires?

Question 10
10.

Question 11
11.

Question 12
12.

Extend your thinking: What can humans do to reduce the impact of wildfire?

Question 13
13.

Question 14
14.

What has been your experience with wildfires? Have you or your loved ones ever been affected by wildfires?
Categorize aspects of wildfires into the appropriate sphere.
Particles in the air
Smoke & smog
Dry soil
Trees burned
Animals flee
Polluted water
Atmosphere
Hydrosphere
Geosphere
Biosphere
Identify the 2 spheres interacting in the example:

Ash may be carried by winds many miles from the fire and then dropped into streams.
Atmosphere
Biosphere
Hydrosphere
Geosphere
Burned plant debris that did not blow away becomes the new soil that can provide some nutrients for new plants
Atmosphere
Biosphere
Hydrosphere
Geosphere
Rainfall over burned land carries ash, soot, and dirt into streams and rivers, changing the turbidity, temperature, and pH.
Atmosphere
Biosphere
Hydrosphere
Geosphere
Smoke and noxious fumes can coat the lungs of animals and people, affecting their ability to breathe.
Atmosphere
Biosphere
Hydrosphere
Geosphere
Consider the following feedback loop:


Which type of feedback loop does this represent?
Positive Feedback Loops
Negative Feedback Loop
Justify your answer: Why did you select the type of feedback loop for the previous question?
The loop reduces the effect of the change
Instability increased
Balanced was maintained
The loop increases the effect of the change
Self Assessment: Learning Target #1: Identify Earth's spheres and describe how they interact
I can name and describe Earth's spheres and give a detailed example of how they interact
I can name Earth's spheres and give an example of how they interact
I can name Earth's spheres but need help to describe how they interact
I need help naming Earth's spheres and how they interact
Self-Assessment: Learning Target #2: Define negative and positive feedback loops and explain how they are different
I can describe how negative and positive feedback loops are different and can give an example of each
I can describe how negative and positive feedback loops are different, but can't give examples
I have a hard time describing the difference between a negative and positive feedback loop
I don't know what a feedback loop is