Air vibrates at different frequencies to generate low or high pitched sounds.
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This story comes from our visit to Port Augusta, South Australia, where we had the chance to reach students over hundreds of kilometres through Port Augusta School of the Air.
Seasons on Earth are caused by the angle at which sunlight hits the Earth's surface as Earth orbits around the Sun on its tilted axis.
Do you have a really competitive friend who can’t stand losing?
Full steam ahead and watch which way the cork goes.
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