Soil can become compacted over time due to both animal and machinery traffic, resulting in poor drainage. A farmer collected and sent soil samples for testing. The laboratory carried out tests comparing the capillarity and infiltration rate of a compacted soil and an un-compacted soil. (a) State a possible hypothesis and prediction for this investigation. Hypothesis: Prediction: (b) Suggest one suitable variable for this investigation. (c) Describe briefly how the infiltration rate of both the compacted and un-compacted soil was determined by the laboratory.

Leaving Cert Agricultural Science Soil Science: Soil can become compacted over t

Soil can become compacted over time due to both animal and machinery traffic, resulting in poor drainage - Leaving Cert Agricultural Science - Question Question 1 - 2021

Question Question 1

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Soil can become compacted over time due to both animal and machinery traffic, resulting in poor drainage. A farmer collected and sent soil samples for testing. The l... show full transcript

Worked Solution & Example Answer:Soil can become compacted over time due to both animal and machinery traffic, resulting in poor drainage - Leaving Cert Agricultural Science - Question Question 1 - 2021

Step 1

State a possible hypothesis and prediction for this investigation.

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Answer

Hypothesis: Compacted soil will have a lower infiltration rate compared to un-compacted soil due to its denser structure obstructing water flow.

Prediction: If soil is compacted, then the rate of water infiltration will be significantly less than that of un-compacted soil.

Step 2

Suggest one suitable variable for this investigation.

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Answer

One suitable variable for this investigation could be the 'infiltration rate,' which can be measured in volume of water per unit area per time (e.g., cm/hr).

Step 3

Describe briefly how the infiltration rate of both the compacted and un-compacted soil was determined by the laboratory.

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Answer

The laboratory determined the infiltration rate by setting up a controlled experiment where equal amounts of water were applied to both the compacted and un-compacted soil samples. They measured the time it took for the water to infiltrate a specified depth or volume in each type of soil. This was repeated multiple times to ensure accuracy and reliability of the results.

Soil can become compacted over time due to both animal and machinery traffic, resulting in poor drainage - Leaving Cert Agricultural Science - Question Question 1 - 2021

Worked Solution & Example Answer:Soil can become compacted over time due to both animal and machinery traffic, resulting in poor drainage - Leaving Cert Agricultural Science - Question Question 1 - 2021

State a possible hypothesis and prediction for this investigation.

Suggest one suitable variable for this investigation.

Describe briefly how the infiltration rate of both the compacted and un-compacted soil was determined by the laboratory.

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