What did it mean if something was in blue glass?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.

What is the relationship between the direction of motion of the balloon and the wind currents