mˈuːvɪŋ ˈaɪs wɪl kˈæɹi pˈɛbəlz ænd sˈænd ɡɹˈeɪnz ɹᵻmˈuːvd fɹʌm ˌʌpɚ lˈɛvəlz wˌɪtʃ ɪn tˈɜːn ɡɹˈaɪnd ɐ smˈuːð ɔːɹ ɡɹˈuːvd sˈɜːfɪs əpˌɑːn ðɪ ˌʌndɚlˈaɪɪŋ ɹˈɑːk.
Moving ice will carry pebbles and sand grains removed from upper levels which in turn grind a smooth or grooved surface upon the underlying rock.