Question 14 of 20beginner💡 UnderstandShort Answer2 marks

Understanding How Fuel Works - Which diya burns longer? Why?

Correct Answer

Diya 2 (with oil) burns longer than Diya 1 (without oil).

This is because the oil acts as fuel that keeps the flame burning.

Diya 1 has only a cotton wick without any fuel, so it burns only as long as the wick itself lasts, which is very short.

Diya 2 has oil as fuel that continuously feeds the flame through the wick, allowing it to burn for a much longer time.

Activity 4 demonstrates how fuel works. The oil in Diya 2 acts as fuel, similar to how petrol and diesel are fuels for vehicles and cooking gas is a fuel for cooking.

The wick draws the oil up and the flame burns the oil, keeping the diya lit for longer.

Exercise: Activity 4 | Q: 1 | (Page Page 9-10)
For More Understanding

Explanation

Activity 4 demonstrates how fuel works. The oil in Diya 2 acts as fuel, similar to how petrol and diesel are fuels for vehicles and cooking gas is a fuel for cooking. The wick draws the oil up and the flame burns the oil, keeping the diya lit for longer.

Solution Steps

  1. Diya 2 (with oil) burns longer than Diya 1 (without oil)

  2. Oil acts as fuel that keeps the flame burning

  3. Diya 1 has only a cotton wick without any fuel, so it burns very briefly

  4. Diya 2 has oil that continuously feeds the flame through the wick

  5. This demonstrates how fuel works, similar to petrol/diesel for vehicles and cooking gas

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