1. Complete: Heat and pressure melts rock and turns it into . When it cools it becomes rock. 2. Igneous rock can be broken down by and the pieces moved around by erosion. The mix of pieces become rock, such as limestone.

3. The weight and pressure creates heat causing the rock to turn into rock, such as marble.

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.