Full Definition of PRECEDING. See preceding defined for English-language learners. See preceding defined for kids. ADVERTISEMENT. I have had a fever of about three weeks during the last and preceding month, from which I am entirely recovered except as to strength. â 2 Thomas Jefferson, letter, 4 Sept. 1823.
This commonly happens along volcanoes. When lava comes out of the volcano, the rocks there melt, usually forming different rocks. If you are asking on the chemical basis as to why they melt, it's because rocks are formed from minerals crystals. These crystals are formed from elements, which in turn also melts (some rocks are made of carbon, and since carbon melts, rock melts too). Source(s): Gsevilla Â· 7 years ago.
Answers. Best Answer: Rocks can be broken down by physical or chemical weathering. Physical weathering is the cracking, breaking up, and grinding down of rocks into smaller pieces while maintaining the same mineral composition. This type of weathering is caused by a number of different factors. Changing temperatures cause rocks to crack and flake, ice splits rocks open, living things dig or pry open rocks, gravity causes rocks to fall and shatter, and abrasion breaks down rocks with solid particles like sand.