"Look at the cement on the sidewalk. It's wet gravel, sand, and powder. When it dries, it turns into a hard conglomerate rock. That is exactly how nature makes concrete, but it takes a million years to cure."
Your slides are the skeleton; your voice is the muscle. Here are three scripts to insert into your presenter notes. earth and life science rocks ppt
: Scientists classify rocks based on their origin (how they formed), texture (size/shape of grains), and chemical composition . Slide 2: Igneous Rocks (The "Fire" Rocks) "Look at the cement on the sidewalk