Generally, 1. blue is hotter therefore temp and color are correlated, 2. white and blue is lighter then red, color and brightness are related, 3. The larger a star, the brighter and 4. The larger a star the more likely it will be red
Convection currents occur in the MANTLE. The mantle is the second layer of the earth after the crust. The mantle is approximately 2900 km thick. Convection currents are triggered or fueled by the heat from the Earth's core.
The part of the mantle closest to the core gets heated. It then becomes less dense than the layers above so it rises. When this rising plume interacts with the crust it cools and becomes more dense than the layers below and so it sinks and this circular motion continues to form convection currents.
It is very easy. It is a lyric monologue done by the poetic abstract voice to directly send his message to the reader.
Typically associated with a Cold front