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Hello, boys and girls. Today we are learning our last natural science lesson of Unit 5.

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What is heat?

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Heat is thermal energy that flows through matter.

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Thermal conductors can transfer thermal energy very well.

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For example, aluminum, steel, copper, gold, among other metals.

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On the other hand, thermal insulators cannot transfer thermal energy very well.

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Some examples are wood, rubber, plastic, wool, glass or cotton.

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Thank you very much for listening.