Which of the following statements is true? o all well-rounded clasts are also spherical. conglomerate consists of a single grain size. o a well-sorted clastic rock is made up of a wide range of particle sizes. pieces of broken rock produced by physical weathering are called clasts. question 2 1 pts a nonmarine clastic sedimentary rock composed of angular pebbles surrounded by matrix would be a(n) o arkose. o breccia. o conglomerate. turbidite. question 3 1 pts a clastic sedimentary rock with clay and silt-sized grains that is finely laminated and breaks into thin sheets is called mudstone. shale. graywacke. siltstone d question 4 1 pts as clastic sediment is transported downstream, away from its point of origin, what happens to the clasts? they become smaller in size. all of the possible answers are correct. they become more angular. they are poorly sorted.