Expansion and contraction?

Question

1 In summer season, material will expand due to high temperature. In winter season, material will contract due to low temperature.
2.
In the formation of universe, before big bang, All concentrated particle are in high temperature and in contraction form, also, when all dust cloud are cotractioned under gravitation, temperature will be increased. and after big bang explosion, are material were expanded out and having low temperature.
Don't you think these two theories contradict with each other?

Answer 1

no, you see when something get's hot, it expands. When something gets contracted against it's will it heats up.

It has to do with cause and effect.
in number 1 the cause was the heat the effect was expansion
in number 2 the cause was contraction the effect was heat

Answer 2

No, because there is another force involved here, and that is the force of the big bang which ejected material from the primordial singularity. The expansion of the universe that we detect now is the remnant of that initial blast, just as the bits of debris blown away from an explosion here on earth do not return to the original source of the blast as they expand and cool. It's called momentum.

Answer 3

Bang man, is expolosion

goin out fast man pushed away

what diff temp make?

if you hold grenade do you feel cold after it go off?