Use data to construct a reasonable explanation. 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 about the world. 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 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, shape, color, temperature, and the ability to react with other substances. Some common materials, such as water, can be changed from one state to another by heating or cooling. Earth and Space Science Properties of earth materials Earth materials are solid rocks, soil, water, and the gases of the atmosphere. These materials have different physical and chemical properties. Changes in the earth and sky Weather changes from day to day and over the seasons.