Employ simple equipment and tools to gather data and extend the senses. 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.
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, temperature, and the ability to react with other substances. Objects are made of one or more materials, such as paper, wood, and metal. Objects can be described by the properties of the materials, and those properties can be used to sort a group of objects. Electricity in circuits can produce light and heat.