What are the main ideas of physical science

Physical science is defined as the study of observable phenomena in the universe.The main idea of physical science is known as the "scientific method". 

This method states: 

1. observe a "real" ( not imaginary ) phenomena. 

2. make a hypothesis ( or theory / idea ) that EXPLAINS this phenomena. 

3. conduct a real experiment to test this hypothesis. 

4. confirm that the experiment validates the original hypothesis and if necessary amend the theory. 

This method is responsible for virtually every scientific explanation of every kind. It has worked so well that the very communication you are having with me is a result of the wonders of physical science. 

Hope your question was answered :)

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.