6.4 centimeters in diameter.
4
Nothing but if the pebble is raw it can have changes in size the longer it stays in a liquid.
0.004 to 0.06
The smallest type of rock is a pebble. A pebble can be made out of most rocks and is the size of a marble.
Yes
It is not necessarily any of these, as "pebble" describes a grain size and does not say anything about composition. In most cases, though, a pebble is a mixture.
Pebble larger than clay
A pebble is smaller than gravel. Pebbles are generally between 2-64 millimeters in size, while gravel typically ranges from 2 to 75 millimeters.
The weight of anything depends on what it's made of and how large it is. You'd have to weigh the individual pebble to be certain.
Meteroids' can be very big or very small. There is no exact size of a meteroid.
1 mearter long
No, the frequency of waves caused by a pebble in water will vary depending on the size and shape of the pebble, as well as the force with which it is thrown. Different disturbances will result in different frequencies of waves.