Definition: Given a scientific passage and an answer, generate a question for the given answer.
Input: Passage: Longshore drift continually moves sand along the shore. Deposition occurs where the water motion slows. The smallest particles, such as silt and clay, are deposited away from shore. This is where the water is calmer. Larger particles are deposited onshore. This is where waves and other motions are strongest. Answer: deposition
Output:
What occurs where the water motion slows?