MEDIUM
9th CBSE
IMPORTANT
Earn 100

Why we do feel light on our feet when standing in a swimming pool with water up to our armpits?

Important Questions on Gravitation

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 32
Explain why, big boulders can be moved easily by flood.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 33
An iron nail sinks in water but it floats in mercury. Why?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 34
Explain why, a piece of glass sinks in water but it floats in mercury.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 35
Steel sinks in water but a steel boat floats. Why?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 36
Explain why, school bags are provided with wide straps to carry them.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 37
Why does a sharp knife cut objects more effectively than a blunt knife?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 38
Explain why, wooden (or concrete) sleepers are kept below the railway line.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Short Answer Type Questions>Q 39
Explain why, a wide steel belt is provided over the wheels of an army tank.