Shweta Basu
from
Amity international School, Gurgaon
Subject :NSO Class : Class 7
Sound cannot travel through__.
Ans 2:
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KRITHIGHA SHRI M P
from
KAMALA NIKETAN MONTESSORI SCHOOL, TRICHIRAPPALLI
Class : Class 8
Hydrogen and Oxygen
Ans 3:
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Ananya
from
Delhi Public School, Meerut
Class : Class 7
Sound travels 4times faster in water than in air. So, air travels fastest in liquids
Ans 6:
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Ans 7:
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Aavanthika.S.R
from
St Thomas Residential school (STRS) trivandrum kerala, Trivandrum
Class : Class 7
Sound cannot travel through VACUUM 'cause there are no air particles to transfer the vibrations. it can travel through SOLIDS,LIQUIDS and GASES. It travels the fastest in SOLIDS