since sand is ground up and very fine rock, i would imagine that it would be boulder.
Fine sand Course sand Gravel Boulder Solid rock
A meteoroid.
It's form changes, not It's mass.
A quartz sand grain could combine with other rock particles to become sandstone which could then undergo metamorphism to become quartzite. Given enough time and weathering, it could simply become a part of a solution that reconstitutes elsewhere as part of a mineral crystal.
desert pavement
Gravel, cobble and boulder (in increasing order of size).
well that could be a problem but you could always travel north to become a boarder or could board on sand dunes if there are any around
The size of meteors varies greatly - anywhere from the size of a grain of sand to the size of a boulder.
asteroid
Clay, Silt, Sand, Granule, Pebble, Cobble and Boulder.
a meteoroid is a rock from the size of a grain of sand to that of a boulder that is in our solar system