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 magnifiers, 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, weight, shape, color, and the ability to react with other substances. These properties can be measured using tools. Objects are made of one or more materials. Objects can be described by the properties of the materials from which they are made, and those properties can be used to separate or sort a group of objects or materials. Light, heat, electricity, and magnetism Light travels in a straight line until it strikes an object.