Heat Generation Quiz

• The energy generated by friction between materials
• The energy released during a chemical reaction
• The energy required to increase the temperature of a material to its ignition point (correct)
• The energy produced by an electrical spark

• Open flame, electrical spark, friction, or chemical reaction (correct)
• Sunlight, wind, water, or geothermal sources
• Nuclear fission, nuclear fusion, geothermal sources, or chemical reaction
• Friction, electrical spark, nuclear fission, or nuclear fusion

• It becomes extremely cold
• It can catch fire or ignite (correct)
• It turns into a different material
• It remains unchanged