Activity 20
What you need
Garden soll, water, glass Jar
What you do
Step 1: Take a clean, straight-sided jam jar and full
it about a third of the way up with garden soll. Also
have ready another Jar of clean water and a
stirring stick.
Step 2: Now add the clear water until the jar of soil
is almost full,
Step 3: Use a stirring stick to stir up the mixture way
really thoroughly.
Step 4. Now leave the jar for 1-2 hours so the
contents settle out and the water can start to clear.
organte matter
CA
Have you found each layer? After observing the layer tick beside it.
Place a
Layers of soil
tick here
Sand particles are the biggest and weigh more than Silt
so the bottom layers will be the Sand part of the soil.
Any Pebbles will also be at the bottom.
Next up is the Silt layer. Silt particles are smaller than
Sand and weigh less so they appear over the Sand.
If you were able to separate out any clay particles they
are the smallest and will be on the top. If your soil is
really thick clay then you may just be left with sticky
lumps of Clay at the bottom of the jar.
Next up you will have the water. This is likely to be
discoloured. The colouring is likely to be rotted plant
(Organic) material that is soluble (it's dissolved).
Finally, at the top will be floating Organic material
which isn't fully rotted.
Answers
Answer:
Any Pebbles will also be at the bottom.
Next up is the Silt layer. Silt particles are smaller than
Sand and weigh less so they appear over the Sand.
If you were able to separate out any clay particles they
are the smallest and will be on the top. If your soil is
really thick clay then you may just be left with sticky
lumps of Clay at the bottom of the jar.
Next up you will have the water. This is likely to be
discoloured. The colouring is likely to be rotted plant
(Organic) material that is soluble (it's dissolved).
Finally, at the top will be floating Organic material
which isn't fully rotted.
Explanation:
Any Pebbles will also be at the bottom.
Next up is the Silt layer. Silt particles are smaller than
Sand and weigh less so they appear over the Sand.
If you were able to separate out any clay particles they
are the smallest and will be on the top. If your soil is
really thick clay then you may just be left with sticky
lumps of Clay at the bottom of the jar.
Next up you will have the water. This is likely to be
discoloured. The colouring is likely to be rotted plant
(Organic) material that is soluble (it's dissolved).
Finally, at the top will be floating Organic material
which isn't fully rotted.
Answer:
The bottom will also contain any Pebbles. The layer of silt comes next.
Because they weigh less and are smaller than sand particles, silt particles often overlie sand. The smallest clay particles will be on top if you were able to separate them out. You might only get sticky clay lumps at the bottom of the jar if your soil is an extremely thick clay. You will then have the water. This probably has a discoloration. The colouring most likely consists of dissolved (it's dissolved) organic plant material that has decayed. Finally, floating organic stuff that hasn't completely decomposed will be near the top.
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