EASY
7th Foundation
IMPORTANT
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Two glass test tubes are heated from two different places of the test tubes. In which test tube will all the water heat up first?

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Important Questions on Heat

EASY
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 3 - Heat>EXERCISES>Q 15

A hot liquid is carefully poured into a beaker. The graph shows how its temperature changes as it cools towards room temperature. Which process(es) is/are taking place at region X ?

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EASY
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 3 - Heat>EXERCISES>Q 16
Two steel balls P and Q have same readings when measured by thermometers of Celsius readings and Fahrenheit readings respectively. Then,
EASY
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 3 - Heat>EXERCISES>Q 17
Which of the following quantities increases when a liquid at room temperature becomes a gas at its boiling point?
EASY
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 3 - Heat>EXERCISES>Q 18
You put a metal key into its metal lock and find that the key is too tight. Which of the following methods will you adopt to make the key fit properly?
EASY
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 3 - Heat>EXERCISES>Q 19

In an experiment shown in figure, the water near the top of the tube starts boiling but the wax in the test tube does not melt completely. What do you conclude?

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EASY
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 3 - Heat>EXERCISES>Q 20

Observe the given figure carefully and choose the correct option for matching the column I with column II.

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column I

 column II
(P) X (i) The process of transfer of heat in a liquid or a gas by the movement of liquid or gas.
(Q) Y (ii) The flow of heat through a substance without the movement of the substance itself.
(R) Z (iii) The process by which heat travels without the help of material medium.