Category: Science
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PSLE Science Reality Lab Vol No.212 | “Volcano Alert Level = WATCH” — Does That Mean an Eruption Is Certain?
A Primary 5/6 PSLE Science Reality Lab guide to volcano alerts: learn why WATCH is a status category based on observed unrest and hazard assessment, not a guarantee, probability percentage or eruption-size score.
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PSLE Science Reality Lab Vol No.211 | “Secchi Depth = 2 m” — Is the Lake Only 2 m Deep?
A Primary 5/6 PSLE Science Reality Lab guide to Secchi depth: learn why a 2 m reading describes water clarity under stated observation conditions, not the physical depth of the lake.
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PSLE Science Reality Lab Vol No.210 | “Solar Irradiance = 1000 W/m²” — Is Every 1 m² Solar Panel Producing 1000 W?
A Primary 5/6 PSLE Science Reality Lab guide to solar irradiance: learn why W/m² describes incoming radiant power per area, not guaranteed electrical output from a same-sized solar panel.
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PSLE Science Reality Lab Vol No.209 | “Dew Point = 20°C” — Is the Air Forecast to Cool to 20°C?
A Primary 5/6 PSLE Science Reality Lab guide to dew point: learn why a 20°C dew point is a moisture-related saturation temperature, not a forecast that the air will cool to 20°C or that rain is guaranteed.
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PSLE Science Reality Lab Vol No.208 | “Albedo = 0.30” — Is the Surface 30% White?
A Primary 5/6 PSLE Science Reality Lab guide to albedo: learn why albedo 0.30 means a reflected fraction of incoming radiation, not that a surface is 30% white or must have one fixed temperature.
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PSLE Science Reality Lab Vol No.207 | “pH 5 vs pH 6” — Is One pH Unit Only a Small Difference in Acidity?
A Primary 5/6 PSLE Science Reality Lab guide to pH comparisons: learn why a one-unit pH change is logarithmic, not one small linear step, and how to keep water-quality claims inside the evidence.
