Natural Science (NATS) 1525 Practice Test 2026 - Free NATS 1525 Practice Questions and Study Guide

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Which statement best defines erosion?

It is the breakdown of rocks at or near the surface.

It is the movement of weathered material by wind, water, or ice.

Erosion is the transport of weathered material from one place to another by natural agents such as wind, water, or ice. This focuses on movement, not just breakdown or chemical change. For example, a river carries sediments downstream, wind moves dust across a desert, and a glacier drags rocks along its path. The other statements describe weathering (the breakdown of rocks) or deposition (settling of sediments after transport), which are related processes but not erosion itself.

It is the chemical alteration of minerals.

It is the deposition of sediments.

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