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NCERT Exemplar Solutions Class 7 Science Solutions for Soil - Exercise in Chapter 9 - Soil
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A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.
Answer:
The top layer of soil is loose and easy to dig, as we down deep soil consists of weathered rocks or which makes digging difficult.
Video transcript
"welcome to lido q a video
i am vineet your leader tutor excited to
bring you this question on your screen
describe a simple experiment to show
that
the prongs of a sound producing tuning
fork
are vibrating now
as shown in the figure what we'll do is
first we will fill the beaker with water
till its breath bring okay
so that it's full
then touch the surface of the water
touch the surface
of the water with the prongs
okay of the water
with the prongs
of the vibrating tuning flow forks
of the
vibrating
tuning forks
okay so this is the vibrating
tuning fork we are touching the water
what do we observe it can be seen that
it can be seen that the water
starts to splash
right this shows that the tuning fork is
vibrating right isn't it interesting
guys
it is right and a very simple
experiment so if you still have a doubt
please leave a comment below do like the
video
and subscribe to our channel i'll see
you in our next video
until then bye guys keep learning
keep flourishing"
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