Understandings about scientific inquiry Scientific investigations involve asking and answering a question and comparing the answer with what scientists already know about the world. Scientists use different kinds of investigations depending on the questions they are trying to answer. Simple instruments, such as rulers, provide more information than scientists obtain using only their senses. Good explanations are based on evidence from investigations. Scientists make the results of their investigations public.
Scientists review and ask questions about the results of other scientists' work.
Physical Science Properties of objects and materials Objects have many observable properties, including size, weight, shape, color, and the ability to react with other substances. Those properties can be measured using tools, such as rulers and balances. Objects are made of one or more materials and can be described by the properties of the materials from which they are made. Position and motion of objects The position and motion of objects can be changed by pushing or pulling. The size of the change is related to the strength of the push or pull.