Heat and Energy
ICSE · Class 9 · Physics
Practice quiz for Heat and Energy — ICSE Class 9 Physics. MCQs and questions with answers to test your preparation.
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What is the SI unit of heat?
At what temperature does water have maximum density?
What is the relationship between calorie and joule?
In Hope's experiment, which thermometer shows 4°C at the end?
Sample Questions
Which of the following are renewable sources of energy?
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Solar energy, Wind energy, Hydroelectric energy
Solar energy, wind energy, and hydroelectric energy are renewable sources as they can be replenished naturally. Coal and natural gas are fossil fuels that are non-renewable as they take millions of years to form.
Which of the following are greenhouse gases?
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Carbon dioxide, Methane, Water vapour
Carbon dioxide, methane, and water vapour are greenhouse gases that trap heat in the atmosphere. Nitrogen and oxygen are major atmospheric gases but are not greenhouse gases.
The energy flow in an ecosystem is:
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Linear
Energy flow in an ecosystem is linear - it moves in one direction from producers to consumers and finally becomes unusable heat. It does not cycle back like matter.
What happens to water when it is cooled from 4°C to 0°C?
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It expands
Water shows anomalous expansion - it expands when cooled from 4°C to 0°C instead of contracting. This is unusual behavior as most substances contract on cooling.
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