Mud

Question: What is Sand?
  Answer: Sand is small loose gritty rounded grains of quartz rock, or other sedimentary minerals and disintegrated rock. - 125

Question: How big is a grain of sand?
  Answer: The diameter of the sand grain particles ranges from 0.06 to 2 millimeters. - 130

Question: What is smaller then a grain of sand?
  Answer: If the sand particles are too small it is considered silt or dust. - 131

Question: What is larger then a grain of sand?
  Answer: If the sand particles are too big they are pebbles or small stones. - 132

Question: Where is sand most frequently found?
  Answer: Sand is frequently found on the beach or in deserts. - 129