Which of the following answer choices best describes J. J. Thomson's plum-pudding model?An atom is surrounded by a firm outer sh
ell and contains positively charged particles in its core.An atom is surrounded by a firm outer shell and contains negatively charged particles in its core.An atom consists of positively charged matter that contains negatively charged particles.An atom consists of negatively charged matter that contains positively charged particles.
It can be as small as a grain of sand or as large as a boulder. Sediment moves from one place to another through the process of erosion. Erosion is the removal and transportation of rock or soil. Erosion can move sediment through water, ice, or wind.
