Pl asap will give ! the movement of rocks and soil is an example of erosion weathering deposition 2. how does alternate freezing and thawing of water cause weathering to occur? freezing chemically alters the rock surfaces water expands when it freezes and cracks rocks open thawing causes rock particles to move from place to place 3. how can you determine if a mountain valley has been created by a glacier? it is v-shaped it is u-shaped it is irregularly shaped (answer if you know the right answer)