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Questions and Answers
What is heat?
What is heat?
- 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
How can heat be generated?
How can heat be generated?
- 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
What happens when a material reaches its ignition point?
What happens when a material reaches its ignition point?
- It becomes extremely cold
- It can catch fire or ignite (correct)
- It turns into a different material
- It remains unchanged
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