Match the following vocabulary words with the correct definitions.
1. weakening of oversaturated soil caused by seismic waves abrasion
2. accumulation of unsorted rock and sediment deposited by a glacier deposition
3. water that flows onto the shore after a wave has broken liquefaction
4. water that flows back into the ocean after a wave has broken backwash
5. wearing away or grinding by friction swash
6. placement of weathered rock and sediment by erosion moraine

abrasion (5) , Deposition (6), liquefaction (1), Backwash (4), Swash (3), moraine (2)

Explanation:

When the air, the rain pass through a rock, by passing the time, will take of some of this material, this is abrasion.

Deposition, is when a part of material is getting together in the bottom of a river.

Liquefaction, when water particles inside  soil, move and start to have a different arrangement that can not support weight at the top of the soil.

When a wave arrive to the beach, the movement is called swash, when the water returns to the sea, the movement is called backwash.

Moraine is the print of a glacier, when it dissapear, the shape that leads behind in soil is the moraine.

a. themes: sub fields