Physics
Sun appears red in colour at sunrise and sunset due to

That sun comes out of the mountains
Red light having longer wave length scatters away
That all other colours scatter away except red
The fact that sun emits only red colour at that time

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Physics
In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch?

To allow the microwaves to get into the food through the holes
To prevent the steam pressure from bursting open the pouch
To allow the aroma of the food to come out through the holes
To allow the heat to get into the food through the hole

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