sand surface
121sand runner — noun 1. : a small plover : sandpiper 2. : any of certain freshwater mussels that dig trails at the surface of the sand; especially : yellowback …
122sand·bar — /ˈsændˌbɑɚ/ noun, pl bars [count] : a raised area of sand with a top that is near or just above the surface of the water in an ocean, lake, or river We walked out onto the sandbar at low tide …
123sand·er — /ˈsændɚ/ noun, pl ers [count] 1 : an electric tool that is used to make a surface smooth 2 US : a machine that is used for spreading sand on icy roads …
124surface creep — noun : a stage in the wind erosion process in which sand grains are moved along the ground surface by impact of other grains in saltation …
125sand scratch swelling — Solvents present in surface scratches that cause the old finish to swell …
126heavy oil and tar sand — Introduction crude oils (crude oil) below 20° API gravity are usually considered to be heavy. The lighter conventional crudes are often waterflooded to enhance recovery. The injection of water into the reservoir helps to maintain reservoir… …
127Singing sand — Infobox Protected area name = |300px caption = Singing Sand Dune location = Altyn Emel National Park, Almaty Province, Kazakhstan lat degrees = 43 lat minutes = 51 lat seconds = 53 lat direction = N long degrees = 78 long minutes = 34 long… …
128Slow sand filter — Slow sand filters are used in water purification for treating raw water to produce a potable product. They are typically 1 to 2 metres deep, can be rectangular or cylindrical in cross section and are used primarily to treat surface water. The… …
