Glencoe Physical Science

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Glencoe PhysicalScienceConsultantDouglas Fisher, Ph.D.

About the ConsultantDouglas Fisher, Ph.D., is a Professor in the Department of TeacherEducation at San Diego State University. He is the recipient of anInternational Reading Association Celebrate Literacy Award as wellas a Christa McAuliffe award for Excellence in Teacher Education. Hehas published numerous articles on reading and literacy, differentiatedinstruction, and curriculum design as well as books, such as ImprovingAdolescent Literacy: Strategies at Work and Responsive Curriculum Designin Secondary Schools: Meeting the Diverse Needs of Students. He has taughta variety of courses in SDSU’s teacher credentialing program as well asgraduate-level courses on English language development and literacy.He also has taught classes in English, writing, and literacy developmentto secondary school students.Copyright by the McGraw-Hill Companies, Inc. All rights reserved. Permission is granted to reproduce thematerial contained herein on the condition that such material be reproduced only for classroom use; be providedto students, teachers, and families without charge; and be used solely in conjunction with Glencoe PhysicalScience. Any other reproduction, for use or sale, is prohibited without prior written permission of the publisher.Send all inquiries to:Glencoe/McGraw-Hill8787 Orion PlaceColumbus, Ohio 43240-4027ISBN 0-07-869580-5Printed in the United States of America12345678904708 07 06 05

Copyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.Note-taking Tips . viiUsing Your Science Notebook . viii7-2 . 737-3 . 76Wrap-Up . 80Chapter 1 The Nature of ScienceChapter Preview . 11-1 . 21-2 . 51-3 . 8Wrap-Up . 12Chapter 8 Magnetism and Its UsesChapter Preview . 818-1 . 828-2 . 858-3 . 88Wrap-Up . 92Chapter 2 MotionChapter Preview . 132-1 . 142-2 . 172-3 . 20Wrap-Up . 24Chapter 9 Energy SourcesChapter Preview . 939-1 . 949-2 . 979-3. 100Wrap-Up . 104Chapter 3 ForcesChapter Preview . 253-1 . 263-2 . 293-3 . 32Wrap-Up . 36Chapter 4 EnergyChapter Preview . 374-1 . 384-2 . 41Wrap-Up . 44Chapter 5 Work and MachinesChapter Preview . 455-1 . 465-2 . 495-3 . 52Wrap-Up . 56Chapter 6 Thermal EnergyChapter Preview . 576-1 . 586-2 . 616-3 . 64Wrap-Up . 68Chapter 7 ElectricityChapter Preview . 697-1 . 70Chapter 10 WavesChapter Preview . 10510-1 . 10610-2 . 10910-3 . 112Wrap-Up . 116Chapter 11 SoundChapter Preview . 11711-1 . 11811-2 . 12111-3 . 12411-4 . 127Wrap-Up . 130Chapter 12 Electromagnetic WavesChapter Preview . 13112-1 . 13212-2 . 13512-3 . 138Wrap-Up . 142Chapter 13 LightChapter Preview . 14313-1 . 14413-2 . 14713-3 . 15013-4 . 153Wrap-Up . 156Glencoe Physical Scienceiii

Chapter 14 Mirrors and LensesChapter Preview . 15714-1 . 15814-2 . 16114-3 . 164Wrap-Up . 168Chapter 20 Chemical BondsChapter Preview . 22720-1 . 22820-2 . 23120-3 . 234Wrap-Up . 238Chapter 15 Classification of MatterChapter Preview . 16915-1 . 17015-2 . 173Wrap-Up . 176Chapter 21 Chemical ReactionsChapter Preview . 23921-1 . 240212 . 24321-3 . 24621-4 . 249Wrap-Up . 252Chapter 17 Properties of Atomsand the Periodic TableChapter Preview . 18917-1 . 19017-2 . 19317-3 . 196Wrap-Up . 200ivChapter 22 SolutionsChapter Preview . 25322-1 . 25422-2 . 25722-3 . 26022-4 . 263Wrap-Up . 266Chapter 23 Acids, Bases, and SaltsChapter Preview . 26723-1 . 26823-2 . 27123-3 . 274Wrap-Up . 278Chapter 18 Radioactivity andNuclear ReactionsChapter Preview . 20118-1 . 20218-2 . 20518-3 . 20818-4 . 211Wrap-Up . 214Chapter 24 Organic CompoundsChapter Preview . 27924-1 . 28024-2 . 28324-3 . 28624-4 . 289Wrap-Up . 292Chapter 19 Elements and TheirPropertiesChapter Preview . 21519-1 . 21619-2 . 21919-3 . 222Wrap-Up . 226Chapter 25 New MaterialsThrough ChemistryChapter Preview . 29325-1 . 294252 . 29725-3 . 300Wrap-Up . 304Glencoe Physical ScienceCopyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.Chapter 16 Solids, Liquids, andGasesChapter Preview . 17716-1 . 17816-2 . 18116-3 . 184Wrap-Up . 188

Note-Taking TipsYour notes are a reminder of what you learned in class. Taking goodnotes can help you succeed in science. These tips will help you takebetter notes. Be an active listener. Listen for important concepts. Pay attentionto words, examples, and/or diagrams your teacher emphasizes. Write your notes as clear and concise as possible. The followingsymbols and abbreviations may be helpful in your note-taking.Word orPhraseSymbol orAbbreviationWord orPhraseSymbol orAbbreviationfor examplee.g.and such asi.e.approximately withw/therefore withoutw/oversusvsCopyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Use a symbol such as a star ( ) or an asterisk (*) to emphasisimportant concepts. Place a question mark (?) next to anything thatyou do not understand. Ask questions and participate in class discussion. Draw and label pictures or diagrams to help clarify a concept.Note-Taking Don’ts Don’t write every word. Concentrate on the main ideas and concepts. Don’t use someone else’s notes as they may not make sense. Don’t doodle. It distracts you from listening actively. Don’t lose focus or you will become lost in your note-taking.Glencoe Physical Sciencev

Using Your Science NotebookNameThis note-taking guide is designed tohelp you succeed in learning sciencecontent. Each chapter includes:DateOceansBefore You ReadBefore you read the chapter, respond to these statements.1. Write an A if you agree with the statement.2. Write a D if you disagree with the statement.Before YouReadLanguage-based ActivitiesActivities cover the contentin your science book includingvocabulary, writing, note-taking,and problem solving.Oceans Ocean water is about the sametemperature all over the world. Global winds cause density currents tomove the ocean water. The Moon’s gravity and rotation affectthe tides. Wave erosion affects marine life incoastal regions.Construct the Foldable as directed at the beginning of this chapter.Science JournalWrite three questions that you would ask a scientist studying ocean life.Anticipation Guide/KWL chartsThink about what you alreadyName knowbefore beginning a lessonandOceansSection 1 Ocean Wateridentify what you wouldliketo learn from reading.DateAcademic Standard—6.3.7: Understand and describe the scales involved in characterizing Earth and its atmosphere.Describe that Earth is . . . . Also covers: 6.2.7Skim through Section 1 of your book. Write three questions thatcome to mind from reading the headings and the illustrationcaptions.1. Student answers will vary, but may include questions about2. ocean formation, composition of ocean water, or waterOceans753. temperature and pressure.ReviewVocabulary Use your book or a dictionary to define atmosphere.atmosphereEarth’s air, which is made of a thin layer of gases, solids, andliquids; forms a protective layer around the planet and is dividedNameDateinto five distinct layers.Section 1 Ocean Water(continued)NewVocabulary Use your book to define the following terms.I found this informationon page.IN SE, p. 197IN RE, p. 105salinityOutline the section on dissolved gases.a measure of dissolved solids, or salts, in seawaterI. The three most important gases areoxygen,carbon dioxide,nitrogenphotosynthesisA. Oxygen gasthe process in which organisms use sunlight, water, and carbondioxide to make food and oxygen1. surface layer gets oxygen from atmosphere andphotosynthesisthermocline2. just below 200 m very little oxygenB. Carbon dioxide gas1. absorbed directly from atmosphere2. given off by organisms during respirationlayer of ocean water that begins at a depth of about 200 m andbecomes progressively colder with increasing depthAcademicVocabulary Use your book or a dictionary to define accumulate.accumulateto increase gradually in quantity or number; to gather or pile up3. reacts with water molecules to form carbonic acidC. Nitrogen gas1. more in ocean than any other gas2.Writing ActivitiesThese activities to help a.you tob.think about what you’relearningII. Oceans have three temperature layers.and make connectionstoA.1.your life.some bacteria combine nitrogen with oxygen to formnitrates that areimportant nutrients for plantsimportant building blocks for plant & animal tissuesurface layer receives solar energywarmest near the equator; solar rays strike more directly2. coolest near the poles; solar rays strike at lower angleB. Thermocline layerC. deep-water layer—extremely cold waterCONNECT ITScuba divers don’t need the pressurized suits that deep-sea diversdo. Hypothesize why deep-sea divers must use special equipment. Without thepressurized suits, the pressure of the water above the diver would crush him or her.78viOceansGlencoe Physical ScienceVocabulary DevelopmentVocabulary words help you to better76 Oceansunderstand your science lessons. Learningthe Academic Words can help you scorehigher on standardized tests.Copyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.Science JournalWrite about whatyou know.

NameDateSection 2 Ocean Currents and ClimateDensity CurrentsI found this informationon page.IN SE, pp. 202–203IN RE, pp. 110–111(continued)Skim the information on density currents. In the Question spacesbelow, turn the bold-faced text headings into questions. The firstone has been done for you. Then answer your questions.Chapter Wrap-UpThis brings the information togetherfor you. Revisiting what you thoughtat the beginning of the chapter providesanother opportunity for you to discusswhat you have learned.Density CurrentsQuestion: How are density currents formed ?Answer: Seawater becomes more dense when it gets cold orsalty. Warm water becomes more dense as it evaporates leavingsalt. Dense water sinks creating currents.Cold and Salty WaterQuestion: What is the affect of cold and salty water?Answer: If water freezes, dissolved salts are left behind. Unfrozenwater is dense because it is cold and salty, causing it to sinkthen flow stops or slows. Cold, salty water flows out to sea aswarm water moves in.Density Currents and Climate ChangeQuestion: How are currents affected by climate?Answer: If temperatures rise enough, ice melts. Salinity isNamereduced as glaciers melt.UpwellingI found this informationon page.IN SE, p. 204IN RE, p. 111DateOceansSequence the steps in the process of upwelling.Chapter Wrap-UpNow that you have read the chapter, think about what you have learned and completethe table below. Compare your previous answers to these.1. Write an A if you agree with the statement.1. Winds cause surface water to move away from the landin the Coriolis effect.2. Deep water rises in place of surface water as it moves away2. Write a D if you disagree with the statement.from shore.Note-taking Based on theCornell Two-Column Formatsurface water.4. El Niño events cause changes in the temperature of theocean current.After YouReadOceans3. Cold, deep currents containing nutrients usually replace Ocean water is about the sametemperature all over the world.D IN SE, p. 198IN RE, p. 106 Global winds cause density currents toD IN SE, p. 202IN RE, p. 110move the ocean water.Practice effective note-takingthrough theOceans 81 The Moon’s gravity and rotation affectuse of graphic organizers, outlines, andthe tides. Wave erosion affects marine life incoastal regions.written summaries.A IN SE, p. 207IN RE, p. 115A IN SE, p. 208IN RE, p. 114ReviewCopyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.Use this checklist to help you study.Review the information you included in your Foldable.Study your Science Notebook on this chapter.Study the definitions of vocabulary words.NameDateSection 3 WavesReview daily homework assignments.Re-read the chapter and review the charts, graphs, and illustrations.(continued)Review ChecklistThis list helps you assess whatyou have learned and prepareTI Identify three foryourtests.importantideas youchapterlearned in the chapter.Review the Self Check at the end of each section.Look over the Chapter Review at the end of the chapter.TidesI found this informationon page.IN SE, p. 207IN RE, p. 115Organize each wave characteristic in the Venn diagram to showwhether it is a trait of tides, waves created by wind, or both. breakers higher different times ofthe month contain crests and troughs wavelength can be measured created by the Sun’s and theMoon’s gravity created by winds wave height can be measuredTidesS UMMARIZEAccept all reasonable responses.Waves Createdby WindBoth88higherdifferenttimes ofthe monthcontain crestsand troughswavelength canbe measuredcreated bythe Sun’sand Moon’sgravityI found this informationon page.IN SE, p. 207IN RE, p. 115Accept all reasonableresponses.84Oceanscreatedby windsbreakerswave height canbe measuredModel spring and neap tides in the boxes below. Use the figure in your book to help you. Include the Sun, the Moon, and Earth in your model drawings.Spring TideNeap TideSpring tides occurwhen the Sun, Moonand Earthare aligned.Neap tides occurwhen the Sun, Moon,and Earth are atright angles.Graphic OrganizersA variety of visual organizers help youto analyze and summarize informationand remember content.OceansGlencoe Physical Sciencevii

NameDateThe Nature of ScienceBefore You ReadBefore you read the chapter, respond to these statements.1.Write an A if you agree with the statement.2.Write a D if you disagree with the statement.Before YouReadThe Nature of Science A scientific theory will always be true. A scientific experiment is valid as long as you don’t vary morethan two factors. By choosing an appropriate unit of measurement, you can avoidworking with large-digit numbers and with many decimal places.Copyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Any type of graph is appropriate for displaying any type ofinformation.Construct the Foldable as directed at the beginning of this chapter.Science JournalList possible reasons that scientists study space.The Nature of Science1

NameDateThe Nature of ScienceSection 1 The Methods of ScienceSkim the headings and bold words in this section. Write four stepsscientists might take to solve a problem.ReviewVocabulary Define investigation to show its scientific meaning.investigationNewVocabulary Read the definitions below, then write the key term on the blankin the left c

Glencoe Physical Science vii Organize each wave characteristic in the Venn diagram to show whether it is a trait of tides, waves created by wind, or both. Model spring and neap tides in the boxes below. Use the figure in your book to help you.

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