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 map below shows the type of data that helped geologists understand where and why most earthquakes occur. Study the global distribution and depth of large earthquakes that occurred between 1975 and 1995. Then click on the map to compare the locations of earthquakes with plate boundaries. Compare the location of earthquakes and plate boundaries. Then answer the questions that follow. Questions. 1  Notice that earthquakes are mainly concentrated in narrow bands.