Percentage Water Content of Soil Sample (Leaving Cert Agricultural Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the name of the method used to determine soil water content by measuring weight loss?
What is the name of the method used to determine soil water content by measuring weight loss?
Gravimetric method
At what temperature should the drying oven be set when determining soil water content?
At what temperature should the drying oven be set when determining soil water content?
105°C
How long should the soil sample be placed in the drying oven at 105°C?
How long should the soil sample be placed in the drying oven at 105°C?
24 hours
What is the purpose of the desiccator in this practical?
What is the purpose of the desiccator in this practical?
Prevent moisture reabsorption
Why is 105°C specifically chosen as the drying temperature?
Why is 105°C specifically chosen as the drying temperature?
Removes water without decomposing organics
In the formula, what does represent?
In the formula, what does represent?
Weight of water lost
Given: = 50g, = 80g, = 65g. What is the water content percentage?
Given: = 50g, = 80g, = 65g. What is the water content percentage?
100%
What effect does incomplete drying have on the calculated water content?
What effect does incomplete drying have on the calculated water content?
Underestimates water content
Which of these does soil water content directly affect in agriculture?
Which of these does soil water content directly affect in agriculture?
Soil aeration and drainage planning
What accuracy must the weighing balance have for this practical?
What accuracy must the weighing balance have for this practical?
0.01g