Advertisements
Advertisements
Question
Why do we prefer to wear white or light coloured clothes in summer and black or dark coloured clothes in winter ?
Advertisements
Solution
We prefer to wear white clothes in summer. The reason is that the white clothes reflects most of the sun’s heat and absorb very little of the sun’s heat, thus they keep our body cool.
We prefer to wear black and dark coloured clothes in winter. The reason is that the black or dark colour clothes absorb most of the sun’s heat and keep our body warm
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
All solids expand by the same amount when heated to the same rise in temperature.
Write true or false for a given statement.
Telephone wires are kept tight between the two poles in summer.
Fill in the blank
The temperature of boiling water is _______
Fill in the blank
Liquids expand _______ than the solids.
Fill in the blank
Gases expand _______ than the liquids.
Fill in the blank
Metals are _______ of heat.
The fig. shows a glass tumbler containing hot milk which is placed in a tub of cold water. State the direction in which heat will flow.

Describe one experiment to show that liquids expand on heating.
State one application of thermal expansion of liquids.
Why do we use cooking utensils made up of copper.
