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Difference between revisions of "Echo"
Revision as of 15:58, 20 October 2018
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(Created page with "==Key Stage 3== ===Meaning=== An
echo
is a
reflection
of
sound
. ===About Echos=== : An
echo
happens when
sound
in the
air
meets the boundary with a ...")
Newer edit →
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Revision as of 15:58, 20 October 2018
Key Stage 3
Meaning
An
echo
is a
reflection
of
sound
.
About Echos
An
echo
happens when
sound
in the
air
meets the boundary with a
solid
.