Revision notes
Core ideas
Secure these ideas first. Say each definition in your own words, then connect it to the topic overview.
- Hydraulic action: Erosion caused when the force of water and compressed air break material from a river bank or cliff.
- Abrasion: Erosion caused when rocks carried by water scrape and wear away the channel or cliff.
- Longshore drift: The movement of sediment along a coast as angled swash and straight backwash create a zigzag path.