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Describe two energy convertors?

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Differentiate between dilute and concentrated solution ?

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What is electricity?

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Write the forms of potential enrgy.

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What is a pulley?

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How can you cause more solid solute to be dissolve din a liquid?

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What is potential energy?

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How pulleys work in water pump?

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Potential energy changes into kinetic energy when a diver dives.

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Give two example of changing potential energy into kinetic energy?

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How scientists define energy?

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What is aqueous solution ?

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Why gears are used?

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Give two uses of pulleys?

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What is the most important invention of human history?

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What are fossil fuels?

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How aquatic animals get oxygen?

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What is chemical energy?

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When gear system used to increase the force?

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Define simple machine with examples?

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