The lowest temperature at which fuel...

Question 1 / 270705eccef9ebacbc34ba4d46506

Question 1 of 270705eccef9ebacbc34ba4d46506

The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the __________.

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Question 1 of 27070

The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the __________.

🔍 Key Concepts

• Difference between flash point and fire point in fuel safety • Meaning of self-sustaining combustion • Role of an external ignition source in starting vs continuing burning

💭 Think About

• Ask yourself: At which temperature does the fuel just begin to give off enough vapor to ignite momentarily, and at which temperature will it continue to burn on its own after being lit? • Which of these terms describes ignition with no external flame or spark present, and which involves a flame or spark starting the burn? • Which definition focuses on the start of visible flame, and which focuses on continuous burning after ignition?

✅ Before You Answer

• Be sure you know that flash point involves ignition only while the ignition source is applied. • Remember that self-sustaining combustion means the fuel keeps burning after the ignition source is removed. • Check which choice best matches: "lowest temperature" + "combustion continues on its own once lit in the presence of an ignition source."

Question 1 of 27070

The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the __________.

auto ignition point

flash point

burning temperature

fire point