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Science Chapter 4 Pg.37

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Questions and Answers

Which of the following is a correct example of heat being produced due to the conversion of mechanical energy?

Burning petrol/diesel in engines

Stirring water vigorously in a mixer

Nail hammered into a log of wood (correct)

Rubbing hands together

What is the primary cause of heat production when water is stirred vigorously in a mixer?

Conversion of nuclear energy

Conversion of mechanical energy (correct)

Conversion of chemical energy

Conversion of electrical energy

How is the sensation of hotness and coldness related to heat?

Heat is a form of energy which causes the sensation of hotness and coldness. (correct)

Heat is the only form of energy responsible for hotness and coldness sensations.

Heat causes hotness while coldness is caused by other forms of energy.

Hotness and coldness sensations are not related to heat energy.

What happens to the heat produced by burning petrol/diesel in engines?

<p>It gets converted into mechanical energy by the engine.</p> Signup and view all the answers

Science Chapter 4 Pg.37

Choose a study mode

Podcast

Questions and Answers

Which of the following is a correct example of heat being produced due to the conversion of mechanical energy?

What is the primary cause of heat production when water is stirred vigorously in a mixer?

How is the sensation of hotness and coldness related to heat?

What happens to the heat produced by burning petrol/diesel in engines?

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