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Q12: Small openings between leaves in a tree
Q16: A heater draws 20A when connected to
Q26: The photons having least energy are those
Q27: Pigeons navigate primarily by<br>A)a good memory.<br>B)a keen
Q29: Each note on a piano keyboard has
Q34: The source of all magnetism is<br>A)tiny pieces
Q38: When the tiny hole in a pinhole
Q58: The physics underlying photovoltaic solar cells is<br>A)electron
Q61: A beam of electrons can pass through
Q74: The refraction of light in a diamond