Rocks: Hard, Soft, Smooth, and RoughNatalie Rosinsky
3
Barnabækur
Sound is created through vibrations that vary in pitch and volume. This creates sound-waves that you can hear. Includes experiments.
© 2020 Capstone Press (Hljóðbók): 9781479540655
Útgáfudagur
Hljóðbók: 5 februari 2020
3
Barnabækur
Sound is created through vibrations that vary in pitch and volume. This creates sound-waves that you can hear. Includes experiments.
© 2020 Capstone Press (Hljóðbók): 9781479540655
Útgáfudagur
Hljóðbók: 5 februari 2020
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