Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids

RESULTS AND OBSERVATIONS:
What did you observe when doing this experiment?
Use the space below to draw a bar graph to show your results from
this experiment. Remember to label the axes of your graph and
give it aheading.
Teacher's Note
A bar graph is used as we are comparing two dierent things (soil
A and B) and they are not related to each other. The "Soil type"
will go on the x-axis and the "Amount of water held by soil" will go
on the y-axis, probably measured in millilitres.
How you could do this investigation better?
CONCLUSION (What you learnt):
Write a sentence where you give a conclusion about what you
learnt from this investigation. See if you can identify what types of
Soil Aand Bwere.
For example, I learned that the soil from the bottom of the hill
holds more water than the soil from the top of the hill. Also ask
learners to identify what type of soil they think Soil Aand B.
Sandy soil does not hold much water. Clay soil holds too much
water. Clay holds water because it has very small grains. The
grains fit together tightly. Loam soil has a mixture of sand and clay,
along with composted plant and animal substances. So, loam soil
holds water well, but does not become waterlogged like clay soil.
QUESTIONS
Why does sand let the water run through quickly?
You are asking the children to make a hypothesis based on the
information about the size of the grains. Sand grains are much
larger than clay grains, and so they don't fit together so tightly
and so there is more space for the water to run through.
Chapter 2. Surface of the Earth
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