HARD
8th ICSE
IMPORTANT
Earn 100

Give reasons for: Small gaps are left between successive rail tracks.

Important Questions on Heat Transfer

HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q H
Give reasons for: Electric transmission lines are kept loose between electric poles.
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q H
Give reasons for: A glass tumbler cracks on heating.
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q H
Give reasons for: Liquids and gases have no linear or superficial expansion.
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q H
Give reasons for: A little space is left in medicine bottles.
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Think and answer>Q 1
Why does a tightly fixed lid of a bottle come loose when kept under hot water?
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Think and answer>Q 2
What would happen to aquatic life if water contracts on cooling till 0°C and expands on heating?
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Think and answer>Q 3
Why does tea cool more rapidly in a saucer than in a cup?
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 6 - Heat Transfer>Think and answer>Q 4
Why do the tyres of a car filled with compressed air become slightly flat in winter?