Greencastle-Antrim School District proudly puts Children First, and that philosophy guides every decision and every action across the district. Our children represent the future of our community, and we work hard to live up to our mission to create and provide opportunities for all students to become lifelong learners and productive citizens.
The two types of high explosives are Primary explosives, which are easily ignited or detonated and are very sensitive to heat and friction, and Secondary explosives, which are usually much less sensitive to heat and friction and they typically have to be ignited through the use of other explosive materials.
Spontaneous combustion occurs when materials self-heat to a temperature high enough to cause them to ignite. Typically, composting materials ignite at temperatures between 150 and 200 C. As the temperature rises, the speed of temperature increase also rises.For example, heat is generated about 16 times faster at 100 C than at 60 C because the reaction rate approximately doubles with each 10 C rise in temperature.pontaneous combustion occurs when materials self-heat to a temperature high enough to cause them to ignite. Typically, composting materials ignite at temperatures between 150 and 200 C. As the temperature rises, the speed of temperature increase also rises.