The smallest type of rock is a pebble. A pebble can be made out of most rocks and is the size of a marble.
A small rock particle larger than sand ranging in size from 2mm to 4mm is typically called fine gravel or granule.
the impermeable layer
A small light source is called a flashlight or a torch.
surface wave
A big rock is heavier to lift than a small stone because it has more mass and thus more gravitational force acting on it. This makes it more difficult to overcome gravity when lifting the big rock compared to the smaller stone.
A small rock is called a pebble.
Small lumps of rock orbiting the sun are called asteroids.
Vug
It is called a meteoroid
These small crystal-lined spheres are called geodes. They form when minerals crystallize inside a cavity within the limestone rock.
Sedimentary rock composed of older fragments of rock is called a conglomerate. This type of rock forms when pebbles and small stones are cemented together.
The rock is said to have a fine-grained texture, also referred to as an aphanitic texture.
A small recess in a rock is called a crevice or fissure. These natural features are often formed through weathering and erosion processes, creating a small gap or opening in the rock surface. Crevices can provide shelter for small animals and plants, and they add visual interest to the rock's texture.
It is a meteorite
Small asteroids are called meteoroids.
meteor
The process by which small streams erode their forward paths through rock is called abrasion. This occurs when sediments carried by the stream rub against the rock, wearing it down over time.