Author: eduKate Asia
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PSLE Science Reality Lab Vol No.479 | “Preserved Specimen Record: 1924” — Does That Mean the Species Still Lives There Today?
A massive Primary 5/6 PSLE Science Reality Lab guide to preserved-specimen biodiversity records: learn why an old specimen can prove historical occurrence without proving a species still lives there today, and how eventDate, basisOfRecord and current evidence control the claim.
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PSLE Science Reality Lab Vol No.478 | “Earthquake Depth = 10 km” — Was It Really Measured Exactly 10 km Deep?
A massive Primary 5/6 PSLE Science Reality Lab guide to earthquake depth reports: learn why 10 km can be a fixed solution depth rather than an exact measurement, and how metadata, uncertainty and review status control the claim.
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PSLE Science Reality Lab Vol No.477 | “DYFI Intensity VI for This ZIP Code” — Did Every Place There Experience Intensity VI?
A massive Primary 5/6 PSLE Science Reality Lab guide to USGS Did You Feel It? maps: learn why a ZIP-code community intensity is a summary of felt reports, not identical shaking or damage at every location.
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PSLE Science Reality Lab Vol No.476 | “Coordinate Uncertainty = 1000 m” — Was the Real Location Exactly 1000 m From the Map Point?
A massive Primary 5/6 PSLE Science Reality Lab guide to biodiversity coordinate uncertainty: learn why a 1000 m value is an uncertainty radius around a map point, not an exact error distance or proof of the organism’s precise location.
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PSLE Science Reality Lab Vol No.475 | “Complete Checklist” — Did the Observer Detect Every Bird That Was Present?
A massive Primary 5/6 PSLE Science Reality Lab guide to eBird complete checklists: learn why complete means all detected and identified species were reported, not that every bird present was detected, identified or counted.
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PSLE Science Reality Lab Vol No.474 | “Magnitude 2 vs Magnitude 4” — Is 4 Twice as Bright as 2?
A massive Primary 5/6 PSLE Science Reality Lab guide to apparent magnitude: learn why lower magnitude numbers are brighter, why the scale is not linear, and how to evaluate astronomy apps, tables and headlines without treating the printed numerals as direct brightness amounts.
