Communicate investigations and explanations. Understandings about scientific inquiry Scientific investigations involve asking and answering a question and comparing the answer with what scientists already know. 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. 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 and shape, and can be measured using tools, such as rulers. Properties can be used to separate or sort a group of objects. Position and motion of objects The position of an object can be described by locating it relative to another object or the background. An object's motion can be described by tracing and measuring its position over time. The position and motion of an object can be changed by pushing or pulling.