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.
Earthquakes usually occur where two plates are running into each other or sliding past each other. Earthquakes mostly occur in places where there is a Fault Line. Plates under the Earth's surface move and push against each other. Some of these places are: Alaska is the most earthquake-prone state and one of the most seismically active regions in the world.