Grade 8 Physics Thermal Energy Quiz

Insulation helps to reduce the transfer of thermal energy through what process?

• Conduction, convection, and radiation

• Evaporation, condensation, and precipitation

• Expansion, compression, and rarefaction

• Reflection, absorption, and refraction

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What type of material is a good insulator of thermal energy?

• Materials with high thermal conductivity

• Materials with low thermal conductivity

• Metals

• Wood

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How does insulation help to conserve energy in a building?

• By reducing the amount of light entering the building

• By attracting more insects to the building

• By increasing the transfer of heat between the inside and outside of the building

• By reducing the transfer of heat between the inside and outside of the building

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What is the purpose of thermal insulation in a thermos flask?

• To make the flask heavier

• To keep the liquid cold

• To maximize heat transfer

• To minimize heat transfer

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What are the advantages of using insulation in homes and buildings?

• Insulation does not reduce noise pollution

• Insulation increases energy consumption

• Insulation has no impact on indoor temperatures

• Insulation helps in reducing energy consumption, maintaining comfortable indoor temperatures, reducing noise pollution, and preventing moisture buildup.

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What is the process by which thermal energy is transferred through direct contact of particles?

• Radiation

• Absorption

• Reflection

• Conduction

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What is the main method of thermal energy transfer in liquids and gases?

• Absorption

• Transmission

• Reflection

• Convection

What is the term for the transfer of thermal energy through electromagnetic waves?

• convection

• absorption

• radiation

• conduction

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How does convection contribute to the transfer of thermal energy in the atmosphere?

• By the movement of air masses

• By the gravitational pull of the moon

• By the rotation of the Earth

• By the reflection of sunlight

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What is an example of thermal energy transfer through radiation in everyday life?

• Feeling the warmth from the sun

• Burning wood in a fireplace

• Boiling water on a stove

• Using a microwave to heat food

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