Glencoe Science: Level Red, Student Edition by McGraw-Hill Education

By McGraw-Hill Education

A balanced method of technological know-how in each one level
Glencoe technological know-how: point crimson is the 1st publication in Glencoe's three-book built-in technological know-how sequence. point pink offers scholars with actual and finished insurance of lifestyles, earth, and actual technology. The powerful content material insurance integrates a variety of hands-on studies, critical-thinking possibilities, and real-world functions.

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A First, a scientist used measurements and X rays to create a cast of the young king’s skull. Depth markers (in red) were then glued onto the skull to indicate the likely thickness of muscle and other tissue. B Clay was applied to fill in the area between the markers. C Next, the features were sculpted. Here, eyelids are fashioned over inlaid prosthetic, or artificial, eyes. D When this model of King Tut’s face was completed, the long-dead ruler seemed to come to life. , (others)Betty Pat Gatliff 634-S3-MSS05_G6_NA 8/13/04 4:30 PM Page 25 Models Communicate Some models are used to communicate observations and ideas to other people.

Infer Scientists ask questions and make observations. What types of questions and observations would you make if you were a scientist studying schools of fish in the ocean. com/self_check_quiz SECTION 1 What is science? /CORBIS 634-S2-MSS05_G6_NA 8/13/04 4:30 PM Page 12 Science in Action Science Skills ■ ■ ■ Identify some skills scientists use. Define hypothesis. Recognize the difference between observation and inference. Science can be used to learn more about the world you live in. Review Vocabulary observation: a record or description of an occurrence or pattern in nature New Vocabulary •• hypothesis • independent infer variable controlled dependent • experiment • variable • variable • constant You know that science involves asking questions, but how does asking questions lead to learning?

Models can help you visualize, or picture in your mind, something that is difficult to see or understand. Ms. Clark’s class made a model because they couldn’t see the item inside the box. Models can be of things that are too small or too big to see. They also can be of things that can’t be seen because they don’t exist anymore or they haven’t been created yet. Models also can show events that occur too slowly or too quickly to see. Figure 18 shows different kinds of models. ■ ■ Describe various types of models.

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