Yeast?
The sun looks like it rises and sets is because the Earth is constantly rotating, making the sun's light hit different parts of the earth at different times.
baking powder
Dawn.
dawn
dawn
The answer is yes. This is because a few minutes after the bread rises the volume increases, density decreases.
A four letter word meaning to grow light as the sun rises is dawn.
The filling does not really shrink, the crust rises making the filling look like less.
light blue
Dawn.
Shamayya
Dawn is the four letter word meaning to grow light as the sun rises. Dawn is the beginning of a new day.