Which of these is an advantage of using models to study tectonic plate movements O Actual plate movements can be stopped.
O Actual plate movenents can be made less freque
O Models of the exact material as original can be me
O Observations can be made from outside the syste

Name the element in group 17, period 2. (periodic table)

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.