HARD
7th CBSE
IMPORTANT
Earn 100

Explain the construction and working of a thermos flask with the help of a labelled diagram.

Important Questions on Heat and Temperature

MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q F
Convert the given temperatures to ℃.
150°F.
MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q F
Convert the given temperatures to °C.
48°F.
MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q F
Answer the following questions in detail.
Convert the given temperature to °F.
150°C
EASY
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q F
Convert the given temperature to °F.
32°C
EASY
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q G
Ice cubes put inside a thermocol box do not melt fast. Why? 
MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q G

The apparatus shown below is filled with water and slightly elevated on one side. A small crystal of potassium permanganate is placed on the other side. Illustrate the flow of convection current when the apparatus is heated from below as shown.

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EASY
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q H

Identify and write whether the objects shown in the following images are conductors or insulators.

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EASY
7th CBSE
IMPORTANT
Science Now 7>Chapter 6 - Heat and Temperature>EXERCISE>Q H

Identify and write whether the objects shown in the following images are conductors or insulators.

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