Author: eduKate Asia
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PSLE Science Reality Lab Vol No.509 | “Pressure = 2000 dbar” — Is the Argo Float Exactly 2000 m Deep?
A massive Primary 5/6 PSLE Science Reality Lab guide to Argo ocean profiles: why 2000 dbar is sea pressure, not automatically an exact depth of 2000 metres, and how to evaluate units, conversion, quality flags and evidence boundaries.
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PSLE Science Reality Lab Vol No.506 | “Wind Barb = 25 kt” — What Does the Weather Symbol Actually Encode?
A massive Primary 5/6 PSLE Science Reality Lab guide to wind barbs: how shaft direction, feathers and pennants encode weather data, and why visual line length is not a speed ruler.
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PSLE Science Reality Lab Vol No.505 | “Power Factor = 0.90” — Does That Mean the Device Is 90% Energy Efficient?
A massive Primary 5/6 PSLE Science Reality Lab guide to power factor: why PF 0.90 is a real-to-apparent-power ratio, not proof of 90% energy efficiency or 10% energy waste.
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PSLE Science Reality Lab Vol No.503 | “Cloud-Top Height = 12 km” — Was 12 km Directly Measured at Every Pixel?
A massive Primary 5/6 PSLE Science Reality Lab guide to satellite cloud-top height: why 12 km is a retrieved estimate from measured radiation, not a direct ruler measurement at every pixel.
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PSLE Science Reality Lab Vol No.502 | “Peak Ground Acceleration = 30% g” — Was the Ground Accelerating at 30% g the Whole Time?
A massive Primary 5/6 PSLE Science Reality Lab guide to earthquake PGA: why 30% g is peak ground acceleration, not constant shaking, a damage percentage, speed or displacement.
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PSLE Science Reality Lab Vol No.501 | “Leq = 70 dBA” — Was the Sound 70 dBA the Whole Time?
A massive Primary 5/6 PSLE Science Reality Lab guide to Leq: why 70 dBA Leq is an energy-equivalent time summary, not a constant sound level, arithmetic dB average or maximum reading.
