Physical Science Textbook Chapter

1. Physical ScienceTextbook Chapter Feature Menu Introducing the Selection Informational Text Focus: Treatment, Scope, and Organization of Ideas Writing Skills Focus: Think as a Reader/Writer

2. Physical ScienceTextbook Chapter How would thinking like a scientist change you?

3. Physical ScienceIntroducing the Selection You have an idea you’d like to try, but where do you start? Do you draw some sketches? Set up an experiment? Build a model? How will you test your method?

4. Physical ScienceIntroducing the Selection To describe the scientific method, Physical Science textbook writers start with a great example. Two scientists observe penguins. Then, the scientists design a new kind of boat—based on their observations. That’s science in action! [End of Section]

5. Physical ScienceInformational Text Focus: Treatment, Scope, and Organization of Ideas The pages of a textbook are filled with useful information, but you have to know how to find it. Ask yourself: • How has the writer sorted and presented information? • How might this format help you to learn the information?

6. Physical ScienceInformational Text Focus: Treatment, Scope, and Organization of Ideas Consider the writer’s treatment, scope, and organization of ideas.

7. Physical ScienceInformational Text Focus: Treatment, Scope, and Organization of Ideas Consider the writer’s treatment, scope, and organization of ideas.

8. Physical ScienceInformational Text Focus: Treatment, Scope, and Organization of Ideas As you read, consider the writer’s treatment, scope, and organization of ideas. [End of Section]

9. Physical ScienceWriting Skills Focus: Think as a Reader/Writer Preparing for Timed Writing The way a writer organizes information can help you understand that information. As you read • notice when the organization helps make information clear • take notes on how the organization helps you understand the information [End of Section]

10. Vocabulary

11. Physical ScienceVocabulary observationn.: act of noticing. hypothesisn.: possible explanation or answer. necessarilyadv.: unavoidably; in every case.

12. Physical ScienceVocabulary Read the sentence below to help you understand the word observation. Scientists use observation to learn about—and develop additional questions about—many different topics. What kinds of observations might scientists make? What kinds of tools might they use to make these observations?

13. Physical ScienceVocabulary Scientists make observations using • microscopes • thermometers • scales • chemicals The scientists gathered to explain their observations on global climate change.

14. Physical ScienceVocabulary Which medical researcher is making observations? Both of them are.

15. Physical ScienceVocabulary This sentence may help you understand how the word hypothesis is often used in science textbooks. Once a scientist has developed a hypothesis to answer a scientific question, he or she still has to test that hypothesis.

16. Physical ScienceVocabulary Why would a scientist want to test a hypothesis before announcing it to the world?

17. Physical ScienceVocabulary Testing helps you find out . . . if your hypothesis fully explains what you observe or if it needs to be revised.

18. Physical ScienceVocabulary Necessarilyis another way to say . . . unavoidably of necessity essentially always automatically

19. Physical ScienceVocabulary Dr. Fein doesn’t necessarily recommend this new vitamin supplement for teenage girls and boys. Why do you think Dr. Fein wouldn’t automatically recommend the new supplement?

20. Physical ScienceVocabulary Teenagers may not necessarily need the new supplement. • Maybe it has been scientifically tested only on adults. • Maybe most young people get enough of the vitamin in their diet. • Maybe Dr. Fein prefers that patients get their vitamins from nutritious food. [End of Section]

21. The End