Why Are the Residents of Kiruna City Moving?
The northernmost city in Sweden, Kiruna sits within the Arctic Circle and is home to about 18,000 residents. It sits on a hill above Europe’s largest iron ore...
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How Does the Ear Give Us Balance?
How Does the Ear Give Us Balance? Deep inside the ear there are three small horseshoe-shaped tubes that have nothing to do with hearing. These tubes are called the...
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What Is the Continental Drift Theory?
What Is the Continental Drift Theory? Long ago there was only one continent on earth, a huge super-continent which geologists now call “Pangaea,” a Greek...
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Why Don’t We Feel the Earth Going Around?
Why Don’t We Feel the Earth Going Around? We cannot feel the Earth rotating because we are moving with it. For example, if we are in a car which is moving at a constant...
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How Does an Escalator Work?
How Does an Escalator Work? An escalator is an endless chain of moving steps pulled round and round by a strong electric motor. An escalator is really just like a...
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