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.
Other, much smaller earthquakes also occur away from plate boundaries such as those related to volcanic activity in Hawaii or those related to wastewater injection wells in Oklahoma. You can view a YouTube version of this animation here. Notable Features. The great majority of earthquakes occur at tectonic plate boundaries. 1  The majority of great earthquakes (magnitude 8.0 or larger) are megathrust earthquakes that occur at convergent plate boundaries, also called destructive margins or subduction zones. For an earthquake to pose a tsunami hazard it needs to vertically move the seafloor; therefore it needs to be large (typically 8.0 or larger), under or near the ocean, and shallow within the earth (less than 100 km).