Class-7 Science – Heat

 

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#1. A measure of the hotness of an object is called ……

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#2. Temperature is measured by a device called ……

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#3. The thermometer that measures our body temperature is called a …….. thermometer.

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#4. Bulb of clinical thermometer contains ……….

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A clinical thermometer reads temperature from ……°C to …….°C.

#5. lower temperature ……°C

#6. highest temperature …… °C

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#7. A clinical thermometer reads temperature from ………. °F to 108 °F.

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#8. The normal temperature of human body is ……..°C

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#9. The temperature of human body normally vary from …… °C to 42°C

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#10. The range of a laboratory thermometer is from -10°C to ………. °C

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#11. Digital thermometers use mercury.

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#12. Heat transfer process in which heat transferred from hotter end to the colder end of an object is known as …….

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#13. The material which allow heat to pass through them easily are …….. of heat.

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#14. Poor conductors are known as ……..

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#15. Select poor conductors of heat.

Select all that apply:

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#16. Heat transfer process in the water is know as …….

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#17. Movement of air from sea to land is called ……

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#18. movement of air from land to sea is called ……

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#19. Heat transfer process where medium not require is known as ……

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#20. All hot body radiate heat

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#21. Which surface absorb more heat.

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#22. …… coloured clothes will reflect most of the heat that falls on them.

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#23. Wool is best conductor of heat.

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#24. Heat flow from cold body to hot body.

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#25. Heat transfer process in solids is ….

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#26. Heat transfer process in air and water is ….

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#27. Heat transfer process from the sun to the earth is …

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