When Were the Ice Ages?
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 cent of...
Read MoreWhen 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 cent of...
Read MoreWhat 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 which molten metal is...
Read MoreWhat Is a Wetsuit and How Does It Work? If you plan to go exploring deep under the sea using scubagear, there’s one essential item you’re going to need: a...
Read MoreWhy 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...
Read MoreStars blink or twinkle when we observe them (from the surface of the earth) because we are viewing them through different layers of turbulent (swirling) air and...
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