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Across 3. Indicates at what temperature the fire was burning. 4. Noticeable patterns created by the fire as it burns. 6. Determine what type material was burning. 10. Shows the three elements needed to produce and sustain a fire. 11. _______ ________tend to melt toward the heat source, so the "direction of melt" can indicate the direction of the fire. 14. A very ________ V-shape might indicate a fire that was hotter than normal, such as one helped along by an accelerant. 15. A _____-______ could indicate that there was a "pool of origin" rather than a point of origin, such as might be caused by, say, a puddle of gasoline. 17. A char pattern on the ________ would help investigators determine the use of an accelerant and its path. 18. Substances, such as gasoline, paint thinner, and alcohol, that accelerate the burning process.

Down 1. The location where the fire started. 2. A dark ________ layer on the glass could indicate a slow, smoldering fire. 5. Fire burns up, in a V-shaped pattern, so a fire that starts at an outlet against a wall leaves a char pattern that points to the origin. 6. Created by very hot fires that burn very quickly and move fast along its path, so that there can be sharp lines between what is burned and what isn't. 7. The lowest temperature to which a substance must be heated in order for the substance to give off vapors which will burn when exposed to a flame or ignition source. 8. Produced when a substance undergoes rapid oxidation involving heat and light. 9. Occur when heavy furniture shields part of a wall; can help determine the origin point. 12. A fire started deliberately. 13. A char pattern on a ________ would help an investigator determine which side of the door the fire was on. 16. A ________ V-shape might indicate a fire that was slow burning.