2. Part A.1. If you have a properly adjusted hot flame, which is pale blue with three distinct cones, what is observed if the air-control valve is slightly closed? Explain. 3.A burning candle produces a luminous flame. What is the fuel for the burning candle? Why is the flame luminous? - The fuel for the burning candle is oxygen. With an insufficient supply of oxygen, small carbon particles are produced, which, when heated to incandescence, produce a yellow, luminous flame. The combustion products may, in addition to carbon dioxide and water, include carbon monoxide.
Most earthquakes occur at the boundaries of tectonic plates. And i think Most earthquakes occur along the edge of the oceanic and continental plates. The earth's crust (the ou â¦ ter layer of the planet) is made up of several pieces, called plates.
The different types of plate boundaries are: 1  Transform boundaries occur where plates slide, or perhaps more accurately grind, past each other along transform faults. The relative motion of the two plates is therefore either sinistral or dextral.  Divergent boundaries occur where two plates slide apart from each other.