Think about the various factors shown in the experiment in the video. For each factor, determine whether the factor was the independent variable (changed on purpose), the dependent variable (might have changed as a result of the experiment), or a controlled factor (kept the same on purpose).
This question is only worth one point. You must get all four choices correct in order to earn the point.
(1 point)
independent variable (changed on purpose) dependent variable (might have changed in response) controlled factor (kept the same on purpose)
amount of soil washed out of each bottle
type of erosion protection on each soil sample
approximate amount of soil in each bottle
approximate amount of water poured onto each sample
Question 2
Think about the results of the experiment. Which type of soil protection provided the most erosion control?
2. Drag and drop the phrases to put the soil protection options in order from least effective (most erosion) at the top to most effective (least erosion) at the bottom.
(1 point)
Arrange responses in the correct order to answer the question. Select a response, navigate to the desired position and insert response at that position. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can be moved using the up and down arrow keys or by dragging with a mouse.
Question 3
Imagine you have the opportunity to speak during a meeting of your local city council on a night when they are considering what type of ground cover to use in front of the new city hall building. The city council members are considering the options of bare soil, soil covered with mulch (which would act a lot like the dry leaves in the experiment), and soil covered with plants such as native grasses and native bushes.
3. Your goal is to present a speech that will convince the city council members to make choices that will prevent soil erosion. Drag and drop the phrases needed to complete your speech.
This question has 9 blanks and is worth 3 points total. For every 3 responses you have correct, you will earn 1 of the available points. To earn full credit, you will need to put the words/phrases into the BEST spots in order to make the entire paragraph make sense.
(3 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Ladies and gentlemen of the council, thank you for the opportunity to speak to you this evening. Soil conservation affects us all. Soil helps to as it runs over the land, and it helps to filter water as it Response area. It protects Response area by providing a home for many plants and animals, and it helps to Response area in the environment. As you consider the options for the ground in front of our new city hall, please keep in mind that Response area is subject to serious erosion. While Response area can provide some protection from erosion, the best option would be to have many native Response area in the soil. The Response area of the plants help hold the soil in place so that it doesn't Response area. I'm asking you to make the decision to protect our soil and prevent erosion. Thank you.
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Amount of soil washed out of each bottle- dependent variable
Type of erosion protection on each soil sample- independent variable
Approximate amount of soil in each bottle- controlled factor
Approximate amount of water poured onto each sample- independent variable
Bare soil
Soil covered with mulch
Soil covered with plants such as native grasses and native bushes
Ladies and gentlemen of the council, thank you for the opportunity to speak to you this evening. Soil conservation affects us all. Soil helps to "filter" as it runs over the land, and it helps to "protect" by providing a home for many plants and animals, and it helps to "clean" in the environment. As you consider the options for the ground in front of our new city hall, please keep in mind that "bare soil" is subject to serious erosion. While "mulch" can provide some protection from erosion, the best option would be to have many native "plants" in the soil. The "roots" of the plants help hold the soil in place so that it doesn't "wash away". I'm asking you to make the decision to protect our soil and prevent erosion. Thank you.
Drag and drop the phrases to put the soil protection options in order from least effective (most erosion) at the top to most effective (least erosion) at the bottom.
(1 point)
Arrange responses in the correct order to answer the question. Select a response, navigate to the desired position and insert response at that position. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can be moved using the up and down arrow keys or by dragging with a mouse.
Since you did not include the options to be dragged and dropped, I cannot arrange them for you. Please provide the responses so that I can assist you in arranging them from least effective to most effective in terms of erosion control.
Leaves on top of soil
grass growing in the soil
no soil protection
No soil protection
Leaves on top of soil
Grass growing in the soil