Texture of Soil - Sedimentation (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 does soil texture refer to?
What does soil texture refer to?
Relative proportions of particle sizes
In sedimentation, which particles settle first?
In sedimentation, which particles settle first?
Heavier, larger particles
What is the correct settling order from bottom to top?
What is the correct settling order from bottom to top?
Gravel, sand, silt, clay, humus
How much soil should be placed in the graduated cylinder?
How much soil should be placed in the graduated cylinder?
50cm³
How long should the cylinder be left undisturbed?
How long should the cylinder be left undisturbed?
Overnight (approximately 24 hours)
Why do larger particles settle faster?
Why do larger particles settle faster?
Particle size and density
If 20cm³ of sand is in 50cm³ soil, what is the sand percentage? Use
If 20cm³ of sand is in 50cm³ soil, what is the sand percentage? Use
40%
Why does humus float on the surface?
Why does humus float on the surface?
It's less dense than mineral particles
Why do clay particles remain suspended for days?
Why do clay particles remain suspended for days?
They are extremely fine
What does clear water above settled layers indicate?
What does clear water above settled layers indicate?
Good separation