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Questions and Answers
What is the source of energy for all living beings?
What is the source of energy for all living beings?
- Water
- Air
- Sunlight
- Food (correct)
Why do some engines require fuel like petrol and diesel?
Why do some engines require fuel like petrol and diesel?
- To produce smoke for environmental reasons
- To release oxygen for combustion
- To provide energy for their working (correct)
- To make loud noises for safety purposes
What do all living beings and machines need?
What do all living beings and machines need?
- Water
- Energy (correct)
- Fuel
- Electricity
What is the term used for the activities living beings have to perform to survive?
What is the term used for the activities living beings have to perform to survive?
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What is the difference in the way the term 'work' is used in day-to-day life and in science?
What is the difference in the way the term 'work' is used in day-to-day life and in science?
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