QCAA Marine Science EA Practice Questions - QCAA Marine Science External Assessment (Queensland) Exam

Which visible wavelength spectrum of sunlight penetrates deepest into clear, open-ocean waters?

Red light (~650-700 nm) Yellow light (~570-590 nm) Blue light (~450-490 nm) Infrared light (>750 nm)

Correct Answer:

Blue light (~450-490 nm)

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