Question

account for the following

a) dogs are generally hang out their tongue in summer.

b) smell of lighted incense stick spread several metres away .

c) sponge through compressible in solid .
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Answer 1

Answer:

1. Dogs have a high body temperature. T o regulate the body temperature dogs hang out their tongue in summer. ... Dogs have fewer sweat glands on their body so it is difficult to cool their body by sweating.
2. (a) Particles of matter are continuously moving. Rate of movement of particles increases with temperature; therefore the smell of lighted incense stick reaches us several metres away due to diffusion. (b) Because it sublimes, due to which it directly converts into vapour and disappear without leaving any solid.
3. Sponge is a solid state of matter yet it is compressible in nature. This is because of space/Interparticle space between the particles of sponge. So, the sponge can be compressed. Yet it is solid in nature because there is a force of attraction between the particles of sponge.

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Explanation:

Answer 2

Explanation:

(a) Dogs have a high body temperature. T o regulate the body temperature dogs hang out their tongue in summer. ... Dogs have fewer sweat glands on their body so it is difficult to cool their body by sweating.

(b) (a) Particles of matter are continuously moving. Rate of movement of particles increases with temperature; therefore the smell of lighted incense stick reaches us several metres away due to diffusion. (b) Because it sublimes, due to which it directly converts into vapour and disappear without leaving any solid.

(c) Sponge is a solid state of matter yet it is compressible in nature. This is because of space/Interparticle space between the particles of sponge. So, the sponge can be compressed. Yet it is solid in nature because there is a force of attraction between the particles of sponge.