Tag

Temperatures

when were the ice ages
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When Were the Ice Ages?

 The Ice Ages ended about 10,000 years ago after lasting about two million years. At its greatest extent the ice covered nearly 30 per…

what are ingots
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What Are Ingots?

Ingots are blocks of cast metal from which other things are made. You have probably heard of cast iron. Casting is the process by…

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Why Do Some Liquids Burn?

Some liquids will burn because when their molecules mix with the oxygen in the air the mixture becomes combustible. The application of heat