Physical Science Properties of objects and materials Objects have many observable properties, including size, shape, color, temperature. Those properties can be measured using tools. 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. Life Science Characteristics of organisms Organisms have basic needs, such as food and water. People have always had questions about their world.
Science is one way of answering questions and explaining the natural world.
Scientists and engineers often work in teams with different individuals doing different things that contribute to the results. Women and men of all ages, backgrounds, and groups engage in a variety of scientific and technological work. Tools help scientists make better observations, measurements, and equipment for investigations. They help scientists see, measure, and do things that they could not otherwise see, measure, and do. Science in Personal and Social Perspectives Personal health Safety and security are basic needs of humans.